# ![@jenseisert Avatar](https://lunarcrush.com/gi/w:26/cr:twitter::2811341428.png) @jenseisert Jens Eisert

Jens Eisert posts on X about theory, topics, this is, in the the most. They currently have [------] followers and [---] posts still getting attention that total [-----] engagements in the last [--] hours.

### Engagements: [-----] [#](/creator/twitter::2811341428/interactions)
![Engagements Line Chart](https://lunarcrush.com/gi/w:600/cr:twitter::2811341428/c:line/m:interactions.svg)

- [--] Week [-----] -8.40%
- [--] Month [------] +24%
- [--] Months [------] +245%
- [--] Year [------] -76%

### Mentions: [--] [#](/creator/twitter::2811341428/posts_active)
![Mentions Line Chart](https://lunarcrush.com/gi/w:600/cr:twitter::2811341428/c:line/m:posts_active.svg)

- [--] Months [--] no change
- [--] Year [--] -37%

### Followers: [------] [#](/creator/twitter::2811341428/followers)
![Followers Line Chart](https://lunarcrush.com/gi/w:600/cr:twitter::2811341428/c:line/m:followers.svg)

- [--] Week [------] +0.33%
- [--] Month [------] +1%
- [--] Months [------] +7.40%
- [--] Year [------] +17%

### CreatorRank: [---------] [#](/creator/twitter::2811341428/influencer_rank)
![CreatorRank Line Chart](https://lunarcrush.com/gi/w:600/cr:twitter::2811341428/c:line/m:influencer_rank.svg)

### Social Influence

**Social category influence**
[technology brands](/list/technology-brands)  [stocks](/list/stocks)  [countries](/list/countries)  [travel destinations](/list/travel-destinations)  [social networks](/list/social-networks)  [finance](/list/finance)  [cryptocurrencies](/list/cryptocurrencies) 

**Social topic influence**
[theory](/topic/theory), [topics](/topic/topics), [this is](/topic/this-is), [in the](/topic/in-the), [software](/topic/software), [quantum computing](/topic/quantum-computing), [melbourne](/topic/melbourne), [wonderland](/topic/wonderland), [just a](/topic/just-a), [article](/topic/article)

**Top accounts mentioned or mentioned by**
[@fuberlin](/creator/undefined) [@lorenzoleone](/creator/undefined) [@dfgpublic](/creator/undefined) [@nvidia](/creator/undefined) [@munichquantum](/creator/undefined) [@nonunitary](/creator/undefined) [@googlequantumai](/creator/undefined) [@bmbfbund](/creator/undefined) [@quantentech](/creator/undefined) [@quantumjournal](/creator/undefined) [@bullmeechum3](/creator/undefined) [@alanbaratz](/creator/undefined) [@dwavequantum](/creator/undefined) [@ionqinc](/creator/undefined) [@kennethdurazzo](/creator/undefined) [@satyanadella](/creator/undefined) [@jacoporz](/creator/undefined) [@berlinquantum](/creator/undefined) [@ercresearch](/creator/undefined) [@bmftrbund](/creator/undefined)

**Top assets mentioned**
[QuantumCore (QBS)](/topic/quantum) [Alphabet Inc Class A (GOOGL)](/topic/$googl) [IBM (IBM)](/topic/ibm) [Rigetti Computing, Inc. Common Stock (RGTI)](/topic/rigetti) [MAPS (MAPS)](/topic/maps) [Integral (ITGR)](/topic/integral) [Abelian (ABEL)](/topic/abelian)
### Top Social Posts
Top posts by engagements in the last [--] hours

"@ClaireCSmith @lorenzo_leone_ @jacoporz @SofieneJerbi @BMBF_Bund @QuantenTech @MATHplusBerlin @QuantumFlagship @dfg_public @MunichQuantum @Berlin_Quantum @ERC_Research Neither have I and thanks. This a modern and computational perspective on stuff I did my PhD on"  
[X Link](https://x.com/jenseisert/status/1892117026358907014)  2025-02-19T07:40Z 24.7K followers, [--] engagements


"@ricvil3 I politely disagree if I may. I like to be operational and pragmatic"  
[X Link](https://x.com/jenseisert/status/1892118442536325155)  2025-02-19T07:46Z 24.7K followers, [--] engagements


"This manuscript takes steps toward applying quantum algorithms to generative models in machine learning for real-world data. It aims to contribute to the challenging task of identifying real-world quantum advantages for data with minimal structure. https://scirate.com/arxiv/2502.14252 https://scirate.com/arxiv/2502.14252"  
[X Link](https://x.com/jenseisert/status/1892816298834374740)  2025-02-21T05:59Z 24.8K followers, [----] engagements


"The group photo of #QCTiP2025. This is an impressive crowd of active researchers interested in quantum computing theory in practice"  
[X Link](https://x.com/jenseisert/status/1915335404921725113)  2025-04-24T09:22Z 28K followers, [----] engagements


"More good news for the German #quantum landscape: The @ML4Q_cluster Cluster of Excellence is entering an exciting new phase. I'm happy and proud to be part of it"  
[X Link](https://x.com/jenseisert/status/1925573829524414734)  2025-05-22T15:25Z 27.5K followers, [----] engagements


"This is a manuscript I am particularly happy with. It concerns topics I have already been working on for my PhD namely good old entanglement theory going back to the work of Bennett and others. Yet it still has a fresh flavour relating the subject to modern developments in quantum computing. I also like its rebellious aspect since it points out that the operations commonly applied in mainstream entanglement theory are inefficient and require superpolynomial resources. If one reasonably restricts to efficient operations the theory is actually altered quite drastically which surprised us. I am"  
[X Link](https://x.com/jenseisert/status/1980957746636710033)  2025-10-22T11:21Z 27.8K followers, [----] engagements


"I just see that @NaturePhysics has its own News and Views article about it. Excellent. https://www.nature.com/articles/s41567-025-03046-w https://www.nature.com/articles/s41567-025-03046-w"  
[X Link](https://x.com/jenseisert/status/1981001684013969651)  2025-10-22T14:16Z 27.8K followers, [---] engagements


"Over the recent weeks and months @preskill and I sat down to think about where we are in quantum computing. While the noisy intermediate-scale quantum (#NISQ) era a term coined by John in [----] is just unfolding as we speak the time seems right to look ahead to the next steps to come. In this perspectives article we try to sketch the fraught road to quantum advantage the path toward fault-tolerant application-scale quantum (#FASQ) computers. There are several gaps ahead of us and we try to faithfully and honestly hint at how one may be able to "mind those gaps" and suggest a few important"  
[X Link](https://x.com/jenseisert/status/1981559543474647190)  2025-10-24T03:13Z 27.6K followers, 17.1K engagements


"Unusually for me I have spent the weekend before a workshop already at the venue. Now I am looking forward to an exciting #AIMS2025 workshop on #QuantumLearningTheory in Muizenberg South Africa"  
[X Link](https://x.com/jenseisert/status/1982711061011939591)  2025-10-27T07:28Z 27.5K followers, [----] engagements


"There are few joys greater than introducing someone to the beauty of quantum mechanics for the first time. Today we explored Schrdingers equation"  
[X Link](https://x.com/jenseisert/status/1986488197602320843)  2025-11-06T17:37Z 27.7K followers, [----] engagements


"The results of the evaluation of the submissions to #QIP2026 are out. I am very happy to see six accepted talks from our team so far. Is there a complete list already available https://arxiv.org/abs/2510.05531 https://arxiv.org/abs/2503.15751 https://arxiv.org/abs/2510.07305 https://arxiv.org/abs/2502.12284 https://arxiv.org/abs/2505.15770 https://arxiv.org/abs/2504.12263 https://arxiv.org/abs/2510.07305 https://arxiv.org/abs/2502.12284 https://arxiv.org/abs/2505.15770 https://arxiv.org/abs/2504.12263 https://arxiv.org/abs/2510.05531 https://arxiv.org/abs/2503.15751"  
[X Link](https://x.com/jenseisert/status/1987081240877367804)  2025-11-08T08:54Z 27.7K followers, [----] engagements


"Designing fault-tolerant circuits using detector error models Quantum error-correcting codes such as subspace subsystem and #Floquetcodes are typically constructed within the stabilizer formalism which does not fully capture the idea of #faulttolerance needed for practical quantum computing applications. In this work we explore the remarkably powerful formalism of #detectorerrormodels which fully captures fault-tolerance at the circuit level. We introduce the detector error model formalism in a pedagogical manner and provide several examples. Additionally we apply the formalism to three"  
[X Link](https://x.com/jenseisert/status/1987400275200503986)  2025-11-09T06:02Z 27.7K followers, [----] engagements


"We just saw a lot of good progress. You are right in the sense that some proponents have made exaggerated and possibly even irresponsible claims about what we will see soon. You are not right in the sense at least implicitly and no offense that people are not working very hard to make progress on hardware and softwarethey are. So in the end I think it is a good idea to give smart people a chance to really change things"  
[X Link](https://x.com/jenseisert/status/1987925550770323755)  2025-11-10T16:49Z 27.8K followers, [----] engagements


"If you would like to read an attempt at providing a fair assessment of where we stand in quantum computing these days you might want to have a look at the perspectives article that my friend and colleague @preskill and I wrote just very recently. We aim to be critical and realistic but still end on an optimistic note. https://arxiv.org/abs/2510.19928 https://arxiv.org/abs/2510.19928"  
[X Link](https://x.com/jenseisert/status/1987926340780077462)  2025-11-10T16:52Z 27.8K followers, [----] engagements


"Variational quantum eigensolvers and classical tensor network methods provide upper bounds to ground-state energies. Lower bounds are known but often less appreciated even though they can be quite tight. I have decided to turn the note into a small paper. This work stresses that for translationally invariant lattice Hamiltonians with periodic boundary conditions one can easily derive efficiently computable #lower bounds to ground-state energies that can be compared with variational principles providing upper bounds. As small technical results it is shown that (i) the #Andersonbound and (ii) a"  
[X Link](https://x.com/jenseisert/status/1990337296009179585)  2025-11-17T08:32Z 27.8K followers, [----] engagements


""Quantum Computing - Hope or Hype" This is the topic of a panel discussion happening tonight Nov [--] at 18:30 Berlin time run by the Deutsche Physikalische Gesellschaft and the @PhysicsNews. We will discuss where we stand in #quantumcomputing today with friends and distinguished experts including Ashley Montanaro (or @BristolUni and @PhasecraftLtd) Elham Kashefi (of @EdinburghUni and @CNRS) Joseph Doetsch (of Lufthansa Industry Solutions) and myself (of @FU_Berlin @helmholtz_en and @Fraunhofer). I am sure this is going to be fun and insightful."  
[X Link](https://x.com/jenseisert/status/1991506792203878604)  2025-11-20T13:59Z 27.8K followers, [----] engagements


"Reinforcement learning of quantum circuit architectures for molecular potential energy curves: We aim at using #machinelearning methods for designing quantum variational principles in quantum chemistry. Quantum chemistry and optimization are two of the most prominent applications of quantum computers. #Variationalquantumalgorithms have been proposed for solving problems in these domains. However the design of the quantum circuit ansatz remains a challenge. Of particular interest is developing a method to generate circuits for any given instance of a problem not merely a circuit tailored to a"  
[X Link](https://x.com/jenseisert/status/1991748486379774132)  2025-11-21T06:00Z 27.9K followers, [----] engagements


"Winter wonderland [---] for this year"  
[X Link](https://x.com/jenseisert/status/1992938432243601829)  2025-11-24T12:48Z 27.8K followers, [----] engagements


"@jaimeojedas No. But you might be surprised to hear that we wrote a paper on the problem. https://arxiv.org/abs/quant-ph/0703225#::text=The%20quantum%20marginal%20problem%20asksof%20a%20composite%20quantum%20system https://arxiv.org/abs/quant-ph/0703225#::text=The%20quantum%20marginal%20problem%20asksof%20a%20composite%20quantum%20system"  
[X Link](https://x.com/jenseisert/status/1995001394948984948)  2025-11-30T05:26Z 27.9K followers, [--] engagements


"We are hiring a postdoctoral researcher and a PhD student to join a strong research team to work on #quantumerrorcorrection for cold atomic platforms funded by the @bmftr_bund. The topics range from abstract considerations to hardware-tailored approaches. We can provide a uniquely stimulating and fun research environment driven by discussion interaction and collaboration with substantial blackboard time. We are a highly active research group with a culture of open discussion creative interdisciplinary thought and substantial international collaborations. The successes of past group members"  
[X Link](https://x.com/jenseisert/status/1995362547352904168)  2025-12-01T05:21Z 28K followers, [----] engagements


"How can we classically simulate large-scale open quantum systemseffectivelydequantizingthem I am delighted to see the results of this wonderfully fruitful collaboration published in @NatureComms. Understanding interactions between quantum systems and their environments is crucial for developing stable quantum technologies and accurate physical models. Yet simulating open quantum systems with non-unitary dynamics remains computationally demanding. We introduce the tensor jump method (TJM) a scalable and embarrassingly parallel algorithm for stochastically simulating large-scale open quantum"  
[X Link](https://x.com/jenseisert/status/1998789154096709898)  2025-12-10T16:17Z 28K followers, [----] engagements


"Great fun at the end-of-year Christmas party of our research team at @FU_Berlin. Warm thanks to @EliesMiquel Riko Schadow and Meret Preu for organizing and setting up the quiz. It is the best quantum team"  
[X Link](https://x.com/jenseisert/status/2001241431814607164)  2025-12-17T10:41Z 28K followers, [---] engagements


"Great fun at the end-of-year Christmas party of our research team at @FU_Berlin. Warm thanks to @EliesMiquel Riko Schadow and Meret Preu for organizing and setting up the quiz. It is the best quantum team"  
[X Link](https://x.com/jenseisert/status/2001249387562025151)  2025-12-17T11:13Z 28K followers, [---] engagements


"I wish you all a Merry Christmas and a Happy New Year. [----] has been great fun productive and exciting but also challenging in its own ways. I hope you enjoy a few peaceful days with your loved ones. Just a few days ago we celebrated Hanukkah with our Jewish friends; today it is time for Christmas. P.S.: Note the various topological excitations on this two-dimensional Christmas tree"  
[X Link](https://x.com/jenseisert/status/2003782142103294298)  2025-12-24T10:57Z 28.1K followers, [----] engagements


"Winter wonderland"  
[X Link](https://x.com/jenseisert/status/2007509440359215515)  2026-01-03T17:48Z 28.2K followers, [----] engagements


"Do Bose-Hubbard type systems have a speed of sound for particle propagation Yes. Indeed it has long been an open question whether interacting bosonic systems also feature finite speeds of sound in information and particle propagationa question that was only recently resolved. Standard Lieb-Robinson bounds do not apply here as the operators involved are not bounded. For some bosonic systems one can even design contrived counterexamples that violate relativity on the level of the model. This work proves a strikingly simple bound of this kind for particle propagationshown in literally a few"  
[X Link](https://x.com/jenseisert/status/2008031911944368536)  2026-01-05T04:24Z 28.2K followers, 10.3K engagements


"To what extent can noisy quantum circuits be classically simulated And at what point can this is no longer be simulated so that one can hope for a quantum advantage This is a compelling research question and even one related to my ERC AdG. Here we suggest frames to do so extending known Monte Carlo like methods. Concretely in this work we introduce a unified framework for the #classical simulation of #quantumcircuits based on frame theory encompassing and generalizing a broad class of existing simulation strategies. Within this framework the computational cost of a #simulation algorithm is"  
[X Link](https://x.com/jenseisert/status/2009528702690849231)  2026-01-09T07:32Z 28.2K followers, [----] engagements


"Guess what I am looking for this afternoon"  
[X Link](https://x.com/jenseisert/status/2009932893145940187)  2026-01-10T10:18Z 28.3K followers, [----] engagements


"This is the most technological paper I have been involved in for a while. It presents a below-threshold error reduction in single photons through photon #distillation. While it is not focused on #quantumerrorcorrection it should facilitate it for integrated #photonic platforms. At its heart it is a functioning implementation of #coherent quantum error #mitigation that reduces errors and coherently brings together several copies of states from photon sources. It presents data from a distillation scheme that is reminiscent of magic state distillation. In detail photonic quantum computers use"  
[X Link](https://x.com/jenseisert/status/2010629631775277057)  2026-01-12T08:27Z 28.3K followers, [----] engagements


"Why is it that so many academics and scientists do not like LinkedIn and other similar media There are obvious shortcomings needless to say. But it seems to me that disseminating scientific results here makes a lot of sense and often more sense than flying across the globe to give a talk. And even direct messaging works better than in many places. Academics have to think every day about what new developments happen so why the conservative attitudes toward media https://twitter.com/i/web/status/2013354539525480787 https://twitter.com/i/web/status/2013354539525480787"  
[X Link](https://x.com/jenseisert/status/2013354539525480787)  2026-01-19T20:55Z 28.3K followers, [----] engagements


"Stoquastic Hamiltonians avoid the sign problem in Monte Carlo simulations so they are often viewed as the easy corner of many-body physics. We show that this intuition fails. Even under strict physical structure estimating the ground-state energy remains computationally intractable. Earlier work proved MA-hardness for general stoquastic Hamiltonians but did not enforce geometric locality. Our results close that gap by establishing MA-hardness for nearest-neighbour geometrically local models in two dimensions and on a line (one dimension) all with constant local dimension of qudits. We give"  
[X Link](https://x.com/anyuser/status/2021628759061737523)  2026-02-11T16:53Z 28.5K followers, [----] engagements


"At the rump session of #QIP2026 @ElhamKashefi announced the #QuantumSoftwareAlliance stressing the importance of research and development of quantum algorithms and software concomitant with quantum hardware development. A quantum computer needs both hardware and software. This is just a cute and somewhat superficial teaser; there is a lot more substantial work to come in the very near future"  
[X Link](https://x.com/anyuser/status/2017162539101008000)  2026-01-30T09:06Z 28.5K followers, [----] engagements


"Quantum computers will finally be useful: What's behind the revolution. An interesting read and good article in @Nature by @dcastelvecchi. https://nature.com/articles/d41586-026-00312-6 https://nature.com/articles/d41586-026-00312-6"  
[X Link](https://x.com/anyuser/status/2019321985352802513)  2026-02-05T08:07Z 28.5K followers, [----] engagements


"Notions of algebraic geometry have something interesting to say about state preparation in linear optics and photonic quantum computing. A major challenge in #photonic quantum technologies is developing strategies to prepare suitable discrete-variable quantum states using simple input states linear optics and auxiliary photon measurements to identify successful outcomes. Fundamentally this challenge arises from the lack of strong non-linearities on the single-photon level meaning that photonic state preparation based on linear optics cannot benefit from the deterministic gate-based approach"  
[X Link](https://x.com/anyuser/status/2021462288352383098)  2026-02-11T05:52Z 28.5K followers, [----] engagements


"Quantum software is essential to make quantum technology work. The #QuantumSoftwareAlliance is a network of research institutions focused on making quantum computing practical through software with an emphasis on co-design algorithm discovery verification benchmarking and interoperability. The web page is now up and alive and has been announced today during the last event of the @QuantumYear2025. We at @FU_Berlin are happy to have contributed to this effort. https://quantumsoftwarealliance.org https://quantumsoftwarealliance.org"  
[X Link](https://x.com/anyuser/status/2021880384053518730)  2026-02-12T09:33Z 28.5K followers, [----] engagements


"@PRX_Quantum @FU_Berlin This work shows that multipartite entanglement can be an advantage in practically meaningful schemes of #quantumcommunication even living up to stringent notions of decomposable security"  
[X Link](https://x.com/jenseisert/status/1468493703111192576)  2021-12-08T08:12Z 26.7K followers, [--] engagements


"One type of experimentally feasible data is sufficient to obtain a wealth of diagnostics about quantum gate sets from #randomizedbenchmarking with no end gate over #crosstalk tomography to full process tomographic #noisecharacterization"  
[X Link](https://x.com/jenseisert/status/1692865752322183539)  2023-08-19T11:47Z 18.7K followers, [----] engagements


"The study of many-body quantum dynamics in strongly-correlated systems is extremely challenging. To date few numerical methods exist capable of simulating the non-equilibrium dynamics of two-dimensional quantum systems in part reflecting complexity theoretic obstructions"  
[X Link](https://x.com/jenseisert/status/1695994091157241895)  2023-08-28T02:57Z 19.6K followers, [---] engagements


"In this work we present a new technique able to overcome this obstacle by combining continuous unitary flow techniques with the newly developed method of scrambling transforms"  
[X Link](https://x.com/jenseisert/status/1695994092734279764)  2023-08-28T02:57Z 23K followers, [---] engagements


"From the physics perspective it advocates the mindset that the only physical properties that can be measured in a laboratory are those that are efficiently computationally detectable"  
[X Link](https://x.com/jenseisert/status/1697439344770851199)  2023-09-01T02:40Z 26.7K followers, [---] engagements


"Warm thanks to Andi Gu @lorenzo_leone_ @ghosh_quantum Susanne Yelin and @quekpottheories for this great collaboration involving @harvard_quantum @FU_Berlin @FraunhoferHHI @HZBde @harvardphysics @UChicago @hseas and @UMassBoston as institutions"  
[X Link](https://x.com/jenseisert/status/1697439410814431602)  2023-09-01T02:41Z 26.7K followers, [---] engagements


"@lorenzo_leone_ @ghosh_quantum @quekpottheories @harvard_quantum @FU_Berlin @FraunhoferHHI @HZBde @harvardphysics @UChicago @hseas @UMassBoston And thanks to the funders from our side the @BMBF_Bund (@QuantenTech) the @QuantEra @MATHplusBerlin @Einstein_Berlin (@ERU_Quantum) the @MunichQuantum the @BMWK and the @dfg_public"  
[X Link](https://x.com/jenseisert/status/1697439530641502231)  2023-09-01T02:41Z 26.7K followers, [---] engagements


"Tomorrow on September [--] the #BerlinQuantumAlliance that brings together a number of activities of research on #quantumtechnologies in #Berlin is kicking off. The @BerlinUAlliance is part of it but also several companies and institutes"  
[X Link](https://x.com/jenseisert/status/1703770190956073372)  2023-09-18T13:57Z 19.6K followers, [----] engagements


"Spending the Sunday afternoon up in the air to meet US representatives in Washington with a delegation from #Berlin tomorrow to discuss #quantum matters and to represent the @ERU_Quantum and the #BerlinQuantumAlliance within the @BerlinUAlliance. Looking forward"  
[X Link](https://x.com/jenseisert/status/1705952306607317056)  2023-09-24T14:28Z 19.6K followers, [--] engagements


"The #NobelPrize2023 in physics goes to Pierre Agostini Ferenc Krausz and Anne LHuillier for attosecond physics"  
[X Link](https://x.com/jenseisert/status/1709144727910584828)  2023-10-03T09:53Z 19.6K followers, 11.9K engagements


"Happy to be named among the top [---] researchers of #Berlin in a survey to be published by the @Tagesspiegel. Berlin offers an excellent academic landscape in a welcoming environment. (For me primarily the @FU_Berlin of the @BerlinUAlliance but also @FraunhoferHHI and @HZBde)"  
[X Link](https://x.com/jenseisert/status/1709980070851289203)  2023-10-05T17:13Z 18.7K followers, [----] engagements


"Bulk-to-boundary anyon fusion from microscopic models Motivated by understanding how how defects in topological #quantumerrorcorrection interact with external defects we study the fusion between anyons in the bulk and at the boundary in fixed-point models of [--] + 1-dim non-chiral #topologicalorder"  
[X Link](https://x.com/jenseisert/status/1723013898679337235)  2023-11-10T16:25Z 18.1K followers, [----] engagements


"@QuSysTCD I do not quite think so"  
[X Link](https://x.com/jenseisert/status/1724799497744822661)  2023-11-15T14:40Z 18.3K followers, [----] engagements


"@38picokelvin Nice where is this"  
[X Link](https://x.com/jenseisert/status/1728990761948238220)  2023-11-27T04:14Z 18.4K followers, [---] engagements


"@38picokelvin My pictures have been taken in the Saxon Switzerland National Park three hours south of Berlin"  
[X Link](https://x.com/jenseisert/status/1728992698592624884)  2023-11-27T04:22Z 18.4K followers, [--] engagements


"What happened to @Apple Some years ago software just functioned advertisers made fun of competitors the software of which was crashing. No longer. Even core products like Keynote Pages and Quicktime have bugs and are crashing often. Why not more priority on functionality"  
[X Link](https://x.com/jenseisert/status/1731167898146578800)  2023-12-03T04:26Z 18.7K followers, 11.6K engagements


"Winter wonderland"  
[X Link](https://x.com/jenseisert/status/1743180262568001575)  2024-01-05T07:58Z 19.6K followers, [---] engagements


"Towards provably efficient quantum algorithms for large-scale machine-learning models"  
[X Link](https://x.com/jenseisert/status/1745066142954070020)  2024-01-10T12:52Z 19.6K followers, 11.8K engagements


"Large #machinelearning models are revolutionary technologies of artificial intelligence whose bottlenecks include huge computational expenses power and time used both in the pre-training and fine-tuning process"  
[X Link](https://x.com/anyuser/status/1745066145713930728)  2024-01-10T12:52Z [--] followers, [---] engagements


"@MvsCerezo I no longer find #email a productive medium. It does not distinguish in-house from outside communication carefully keep communication strands together. It is used irresponsibly with lots of chain messages"  
[X Link](https://x.com/jenseisert/status/1745706445142667445)  2024-01-12T07:17Z 19.6K followers, [----] engagements


"@MvsCerezo What I honestly fail to understand however is why so many academics insist on using it. You can write ten times please respond on the Slack then there is an email and then a complaint "but I have written an email". Oh I forgot. Yes fine but this happens [--] times a day"  
[X Link](https://x.com/jenseisert/status/1745707043384705455)  2024-01-12T07:19Z 19.6K followers, [---] engagements


"@gill1109 @MvsCerezo I use Slack consistently within the team and friends for all scientific matters. Generally I am here and on LinkedIn much more responsive than on email as they have the direct communication aspect. Close collaborators all have my WhatsApp number"  
[X Link](https://x.com/anyuser/status/1745720078891647268)  2024-01-12T08:11Z [--] followers, [---] engagements


"@AndreasAtETH @GulFiliz_Phys And this cat is in a superposition of being hungry and wanting to go out into the forest. Less deadly that is"  
[X Link](https://x.com/jenseisert/status/1748210005076013385)  2024-01-19T05:05Z 19.6K followers, [---] engagements


"@BullMeechum3 @Alan_Baratz @dwavequantum @IonQ_Inc @GoogleQuantumAI @KennethDurazzo @satyanadella To my understanding the question of the utility of QAOA in the NISQ regime is still open. But to be crystal clear we do not consider QAOA and neither NISQ devices"  
[X Link](https://x.com/jenseisert/status/1752296659856343440)  2024-01-30T11:44Z 19.6K followers, [---] engagements


"@BullMeechum3 @Alan_Baratz @dwavequantum @IonQ_Inc @GoogleQuantumAI @KennethDurazzo @satyanadella @nvidia @NVIDIAAI I will send a direct message over the next days"  
[X Link](https://x.com/jenseisert/status/1752342873612189931)  2024-01-30T14:47Z 20.1K followers, [---] engagements


"@Mark96854262 @BullMeechum3 @Alan_Baratz @dwavequantum @IonQ_Inc @GoogleQuantumAI @KennethDurazzo @satyanadella @nvidia @NVIDIAAI Fair enough. 😉"  
[X Link](https://x.com/jenseisert/status/1752707238949745015)  2024-01-31T14:55Z 19.6K followers, [---] engagements


"@ChristophHirche @TU_Muenchen @UniHannover Congrats That qualifies as greater Berlin😉 so looking forward to doing work with you"  
[X Link](https://x.com/jenseisert/status/1753052096193040729)  2024-02-01T13:46Z 19.6K followers, [---] engagements


"This is Konrad Zuses Z1 machine the first modern computer built in [----]. It is for supercomputing what present-day quantum devices are for the #quantumcomputers of tomorrow"  
[X Link](https://x.com/jenseisert/status/1754120641941328127)  2024-02-04T12:32Z 19.7K followers, [----] engagements


"Of cats quanta and computers. Preparing an #outreach talk for the time-honoured and prestigious @UraniaBerlin a place for scientific dissemination founded in [----]. The picture shows our cat the Google AI quantum computer and Konrad Zuse's Z1 computer. Looking forward to it"  
[X Link](https://x.com/jenseisert/status/1755803217328255028)  2024-02-09T03:58Z 19.7K followers, [----] engagements


"The funny life of a scientist. Yesterday I was working for [--] minus two hours on @TQC_conference submissions. During the two hour break I went to a local circus with the family. As a weird coincidence among all people in the tent I was picked by the clown to perform a show fight on stage. Only to now see the deadline shifted"  
[X Link](https://x.com/jenseisert/status/1760623532558467243)  2024-02-22T11:12Z 19.9K followers, [----] engagements


"@BullMeechum3 @Alan_Baratz @dwavequantum @IonQ_Inc @GoogleQuantumAI @KennethDurazzo @satyanadella @nvidia @NVIDIAAI Done"  
[X Link](https://x.com/jenseisert/status/1765701066052509876)  2024-03-07T11:28Z 20.1K followers, [---] engagements


"@rbrtwll I well respected physics experimentalist friend and colleague in a leading position at one of the grand quantum hardware makers was told do not touch by a quantum engineer when showing the impressive device in the lab. There is room for many people"  
[X Link](https://x.com/jenseisert/status/1771037829935595973)  2024-03-22T04:54Z 20.2K followers, [---] engagements


"An interesting encounter over the weekend. One should know that my family and some friends call me Bens: So this is Bens village quantum court"  
[X Link](https://x.com/jenseisert/status/1776858731180863662)  2024-04-07T06:25Z 20.4K followers, [----] engagements


"@IngeKHerrmann Oh indeed. May I ask where is that We are in Sweden every summer"  
[X Link](https://x.com/jenseisert/status/1778670897324228909)  2024-04-12T06:26Z 20.4K followers, [---] engagements


"#QTech2024 a major conference on #quantumtechnologies will take place in Berlin on September 10-12 [----]. The objective of the conference is to present the latest developments of quantum technologies in the domains of quantum communication computation simulation sensors and metrology both in their implementation using various platforms from atoms and ions to solid states superconducting circuits and optics as well as in their conceptual and theoretical foundations. Invited plenary speakers include Antonio Acin (ICFO) Markus Aspelmeyer (Vienna) Mete Atatre (Cambridge) Stacey Jeffrey (QuSoft"  
[X Link](https://x.com/jenseisert/status/1784140383150027224)  2024-04-27T08:39Z 20.6K followers, [----] engagements


"Our garden group meetings on #quantumerrorcorrection are on again this time on molecular codes"  
[X Link](https://x.com/jenseisert/status/1785296809255993603)  2024-04-30T13:15Z 20.6K followers, [----] engagements


"@ewintang @AineshBakshi Wow nice. This is unexpected that one can learn the interaction pattern"  
[X Link](https://x.com/jenseisert/status/1786281413462946226)  2024-05-03T06:27Z 20.7K followers, [---] engagements


"Granada is stunningly beautiful"  
[X Link](https://x.com/jenseisert/status/1787179948945350854)  2024-05-05T17:57Z 20.7K followers, [----] engagements


"@CecClementi @FrankNoeBerlin Happy birthday"  
[X Link](https://x.com/jenseisert/status/1789935764861583662)  2024-05-13T08:28Z 20.8K followers, [--] engagements


"@DIPCehu @Gob_eus @IBM @CFMdonostia @upvehu @CSIC Thanks that was an enjoyable conference"  
[X Link](https://x.com/jenseisert/status/1790012975786467573)  2024-05-13T13:35Z 20.8K followers, [---] engagements


"Evening contemplation at the Baltic sea"  
[X Link](https://x.com/jenseisert/status/1791889005899812940)  2024-05-18T17:50Z 20.9K followers, [----] engagements


"(Semi-)device independently characterizing quantum temporal correlations In this work published in the @PhysRevLett we develop a framework for characterizing quantum correlations in a general temporal scenario. https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.132.220201 https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.132.220201"  
[X Link](https://x.com/jenseisert/status/1796186774206636272)  2024-05-30T14:27Z 21.1K followers, [----] engagements


"Today we initiated a new research initiative on #quantumsoftware in #Germany: #SPP2514 will be dedicated to foundational aspects of quantum software algorithms and systems" funded by the @dfg_public. We had great fun discussing many aspects of the initative. Thanks for that"  
[X Link](https://x.com/jenseisert/status/1806736657732825564)  2024-06-28T17:09Z 21.3K followers, [----] engagements


"What is the most beautiful city of Europe and why is it Prague (Here for #FQMT)"  
[X Link](https://x.com/jenseisert/status/1815663848789082327)  2024-07-23T08:22Z 21.5K followers, [----] engagements


"@phuecn I was not entirely serious of course. Stockholm is beautiful too"  
[X Link](https://x.com/jenseisert/status/1815666930797175210)  2024-07-23T08:35Z 21.5K followers, [--] engagements


"This is what I call an interesting LaTeX error"  
[X Link](https://x.com/jenseisert/status/1817546537007792245)  2024-07-28T13:03Z 21.7K followers, 215.7K engagements


"@SpurzemPatrik Das ist aber nicht Landau (der sowjetische Physiker) sondern Landauer (der Forscher bei IBM)"  
[X Link](https://x.com/jenseisert/status/1818928987579601096)  2024-08-01T08:37Z 21.6K followers, [--] engagements


"Probing coherent quantum thermodynamics using a trapped ion We directly and experimentally observe #coherent dynamics in #quantumthermodynamics. https://www.nature.com/articles/s41467-024-51263-3 https://www.nature.com/articles/s41467-024-51263-3"  
[X Link](https://x.com/jenseisert/status/1826569690212090167)  2024-08-22T10:38Z 23K followers, [----] engagements


"And now for something completely different. I am enjoying the last part of #TQC2024 in Okinawa. Thanks for the kind invitation"  
[X Link](https://x.com/jenseisert/status/1834408000670552307)  2024-09-13T01:45Z 23K followers, [----] engagements


"@WoodsMischa Flights from Japan no longer fly over Russia. Usually they go south. This time they flew over the pole"  
[X Link](https://x.com/jenseisert/status/1835364965382857172)  2024-09-15T17:08Z 23K followers, [---] engagements


"Lake delights"  
[X Link](https://x.com/jenseisert/status/1840278273537774075)  2024-09-29T06:31Z 23K followers, [----] engagements


"I am excessively happy (and admittedly proud) that out of our team so many people made it to senior research positions in #academia - often on the professorial level - and the #quantumindustry. This is probably saying that something is right. The count is now at [--]. https://www.physik.fu-berlin.de/en/einrichtungen/ag/ag-eisert/team/past-members https://www.physik.fu-berlin.de/en/einrichtungen/ag/ag-eisert/team/past-members"  
[X Link](https://x.com/jenseisert/status/1840328160488968702)  2024-09-29T09:49Z 22.8K followers, [----] engagements


"An introduction to infinite projected entangled-pair state methods for variational ground state simulations using automatic differentiation Ideas of #automateddifferentiation are powerful tools in the study of #tensornetworks. https://scipost.org/10.21468/SciPostPhysLectNotes.86 https://scipost.org/10.21468/SciPostPhysLectNotes.86"  
[X Link](https://x.com/jenseisert/status/1840639213152141637)  2024-09-30T06:26Z 23K followers, [----] engagements


"#Tensornetworks capture large classes of ground states of phases of quantum matter faithfully and efficiently. Their manipulation and contraction has remained a challenge over the years however. For most of the history ground state simulations of two-dimensional quantum lattice systems using (infinite) projected entangled pair states (#PEPS) have relied on what is called a time-evolving block decimation. In recent years multiple proposals for the #variationaloptimization of the quantum state have been put forward overcoming accuracy and convergence problems of previously known methods. The"  
[X Link](https://x.com/jenseisert/status/1840639216226537851)  2024-09-30T06:26Z 23K followers, [----] engagements


"Great choice for the #NobelPrize prize in physics. It is cool that the board thinks this is physics in the first place"  
[X Link](https://x.com/jenseisert/status/1843591737622634605)  2024-10-08T09:58Z 23K followers, 79.6K engagements


"These are hugely inspiring days in beautiful #Eichsttt for the @MunichQuantum yearly meeting. Thanks a lot for this"  
[X Link](https://x.com/jenseisert/status/1844346920682258785)  2024-10-10T11:59Z 23.3K followers, [----] engagements


"Warm thanks to Christian Krumnow and @ZoltanZimboras not only for the wonderful collaboration. But also for helping to rescue this draft that we had almost finished some time ago and that we now made happen"  
[X Link](https://x.com/jenseisert/status/1845671946253443515)  2024-10-14T03:44Z 22.8K followers, [---] engagements


"@ZoltanZimboras And thanks to our funders in particular the @dfg_public the @BMBF_Bund (#FermiQP) the @qt__berlin the @QuantERA_EU (#HQCC for which this is a joint-node result) and the @ERC_Research"  
[X Link](https://x.com/jenseisert/status/1845673126769607096)  2024-10-14T03:48Z 22.8K followers, [----] engagements


"All you need is quantum chaos. Except that you do not need #quantumchaos. It took me a while to accept that the main result of this work is not wrong which I still find surprising. https://scirate.com/arxiv/2410.18196 https://scirate.com/arxiv/2410.18196"  
[X Link](https://x.com/jenseisert/status/1849661393483555189)  2024-10-25T03:56Z 26.9K followers, 15.7K engagements


"#Quantumchaos is a quantum many-body phenomenon that is associated with a number of intricate properties such as level repulsion in energy spectra or distinct scalings of out-of-time ordered correlation functions. In this work we introduce a novel class of "pseudochaotic" quantum Hamiltonians that fundamentally challenges the conventional understanding of quantum chaos and its relationship to computational complexity. Our ensemble is #computationallyindistinguishable from the Gaussian unitary ensemble (#GUE) of strongly-interacting Hamiltonians widely considered to be a quintessential model"  
[X Link](https://x.com/jenseisert/status/1849661862213828924)  2024-10-25T03:58Z 26.9K followers, [----] engagements


"@AndreasAtETH @ETH_en @psich_en @ETHQuantumCntr @psich_de @ETH @ETH_physics Wow"  
[X Link](https://x.com/jenseisert/status/1851996006503665775)  2024-10-31T14:33Z 26.9K followers, [---] engagements


"Thanks for the wonderful press release on our work on #HamiltonianLearning https://www.nature.com/articles/s41467-024-52629-3 Novel protocols for estimating Hamiltonian parameters of a superconducting quantum processor could improve precision @arxiv https://t.co/ZQvAwlQ5Vg https://www.nature.com/articles/s41467-024-52629-3 Novel protocols for estimating Hamiltonian parameters of a superconducting quantum processor could improve precision @arxiv https://t.co/ZQvAwlQ5Vg"  
[X Link](https://x.com/jenseisert/status/1854464997201527106)  2024-11-07T10:04Z 23K followers, [----] engagements


"Until the 9th of November [----] the world was divided in East and West. And the separation line went right through the center of Berlin. Today many things are not easy but we should not forget how the world looked like then and that the division was removed without violence"  
[X Link](https://x.com/jenseisert/status/1855485661865746893)  2024-11-10T05:40Z 23K followers, [----] engagements


"Learning complexity gradually in quantum machine learning models #Quantummachinelearning is growing up and increasingly making use of classical machine learning ideas. https://scirate.com/arxiv/2411.11954 https://scirate.com/arxiv/2411.11954"  
[X Link](https://x.com/jenseisert/status/1859148589999509983)  2024-11-20T08:15Z 23.3K followers, [----] engagements


"This has been an exciting section on the intersection of artificial intelligence and quantum computing at #EQTC2024"  
[X Link](https://x.com/jenseisert/status/1859265674344005800)  2024-11-20T16:00Z 23.2K followers, [----] engagements


"@ApitiusHofmann Yes and I am personally and academically close to TII but the talks will take place for better or worse way down the planet in Melbourne"  
[X Link](https://x.com/jenseisert/status/1860428486663340387)  2024-11-23T21:01Z 23.2K followers, [---] engagements


"Now I know why scyscrapers are called skyscrapers: They literally scrape the sky. Seen in Melbourne at #qtml2024"  
[X Link](https://x.com/jenseisert/status/1860975926634336533)  2024-11-25T09:16Z 23.3K followers, [----] engagements


"An unconditional distribution learning advantage with shallow quantum circuits We present a #quantummachinelearning advantage of families of constant depth local quantum circuits over reasonably constrained log-log-depth classical circuits. https://scirate.com/arxiv/2411.15548 https://scirate.com/arxiv/2411.15548"  
[X Link](https://x.com/jenseisert/status/1861247264980902224)  2024-11-26T03:15Z 24.2K followers, [----] engagements


"Day three of #qtml2024 again offers lots of rigorous results in #quantumcomputing related to #learning problems including presentations by Alexander Nietner and family member @SumeetKhatri6 and an industry session"  
[X Link](https://x.com/jenseisert/status/1861577727255736546)  2024-11-27T01:08Z 23.3K followers, [----] engagements


"A great stopover in Bali discussing notions of #holography and #errorcorrection before flying back home for a viva of a student"  
[X Link](https://x.com/jenseisert/status/1862051014830178802)  2024-11-28T08:28Z 23.7K followers, [----] engagements


"What a week. I enjoyed #QTML2024 in #Melbourne - that had a great programme and technically strong talks - and gave two talks there myself one of them a plenary one. Then a stopover in #Bali where we discussed holography and quantum error correction - and where I met the Minister and Vice Minister of Education Culture Research and Technology of Indonesia. Then back over Munich to Berlin where Jonathan Conrad had a stellar PhD viva and Maximilian Kramer won the #QuantumFuturAward in the MSc category and where I was part of the jury (but obviously could not vote for him). Now the Oxygen tent is"  
[X Link](https://x.com/jenseisert/status/1862516440722440374)  2024-11-29T15:18Z 23.3K followers, [----] engagements


"Tensor networks beyond free fermions This work proposes a minimal model extending the duality between classical statistical spin systems and fermionic systems beyond the case of free fermions. A Jordan-Wigner transformation applied to a two-dimensional tensor network maps the partition sum of a classical statistical mechanics model to a #Grassmann variable integral structurally similar to the path integral for interacting #fermions in two dimensions. The resulting model is simple featuring only two parameters: one governing spin-spin interaction (dual to effective hopping strength in the"  
[X Link](https://x.com/jenseisert/status/1864905411498832296)  2024-12-06T05:31Z 23.7K followers, [----] engagements


"A fantastic and fun Christmas party with the best quantum team The grand prize was a #QMIO group logo crafted from clay"  
[X Link](https://x.com/jenseisert/status/1867523308662521856)  2024-12-13T10:53Z 24K followers, [----] engagements


"Recordings of my talks at #QTML2024 in Melbourne. https://www.youtube.com/watchv=jxmF2lHbzME https://www.youtube.com/watchv=UYB0K17apTA Sitting in a lounge in Abu Dhabi in the middle of the night preparing two talks for #QTML2024 that is about to start tomorrow. Looking forward to it. https://t.co/jnU0mm0bPM https://www.youtube.com/watchv=jxmF2lHbzME https://www.youtube.com/watchv=UYB0K17apTA Sitting in a lounge in Abu Dhabi in the middle of the night preparing two talks for #QTML2024 that is about to start tomorrow. Looking forward to it. https://t.co/jnU0mm0bPM"  
[X Link](https://x.com/jenseisert/status/1869414859890455011)  2024-12-18T16:10Z 23.8K followers, [----] engagements


"What a year for our QMIO team at @FU_Berlin. So many ideas have been formulated exciting research questions discussed on the blackboard thoughts brought to a good end. Many collaborations have been developed further. And the outcomes are pretty much insane I do not know what to say. We had [--] papers in the @Nature Portfolio and @ScienceMagazine groups this year alone [--] in the @PhysRevLett among way over [---] manuscripts in total in the team including printed work and preprints. We had so many talks and were contributing with solid teams at a number of major conferences: We had [--] talks at"  
[X Link](https://x.com/jenseisert/status/1869745821916307874)  2024-12-19T14:05Z 24K followers, [----] engagements


"@QuantumAephraim @lufthansa @AirCanada Yes I could not agree more. The trouble is many countries have only one large carrier and for this reason they are basically not regulated at all and the international regulations are negligible"  
[X Link](https://x.com/jenseisert/status/1870776187191988439)  2024-12-22T10:19Z 24K followers, [---] engagements


"In todays early morning maths club for elementary school kids in #Berlin as part of the STEM education we covered tilings. And we cut out cookies with an Einstein an aperiodic monotile that covers a full Penrose tiling discovered as recently as [----] in a preprint that solved a long standing puzzle. Later today we will eat them. https://arxiv.org/abs/2303.10798 https://arxiv.org/abs/2303.10798"  
[X Link](https://x.com/jenseisert/status/1876899616970469455)  2025-01-08T07:51Z 24.4K followers, [----] engagements


"@Marco_Piani @CharlesOJ @nvidia Indeed and see also my previous point"  
[X Link](https://x.com/jenseisert/status/1877317170981466588)  2025-01-09T11:31Z 24.2K followers, [---] engagements


"@Marco_Piani @CharlesOJ @nvidia The first thing I did was to buy @rigetti stocks. 😉 (CC @ChadRigetti)"  
[X Link](https://x.com/jenseisert/status/1877317440662622489)  2025-01-09T11:32Z 24.2K followers, [---] engagements


"@Marco_Piani @CharlesOJ @nvidia @rigetti @ChadRigetti And @GoogleQuantumAI stocks"  
[X Link](https://x.com/jenseisert/status/1877318969192796353)  2025-01-09T11:38Z 24.2K followers, [---] engagements


"Quantum complexity phase transitions in monitored quantum circuits. Warm thanks to @ryotarosuzuki_ @haferjonas and @phfaist for this wonderful collaboration. And thanks to our funders in particular the @dfg_public (#CRC183). I am happy to see this out in the @quantumjournal. https://quantum-journal.org/papers/q-2025-02-10-1627/ https://quantum-journal.org/papers/q-2025-02-10-1627/ https://quantum-journal.org/papers/q-2025-02-10-1627/ https://quantum-journal.org/papers/q-2025-02-10-1627/"  
[X Link](https://x.com/jenseisert/status/1889206929479614639)  2025-02-11T06:56Z 25.1K followers, [----] engagements


"A great contributed afternoon session on learning and tomography at #QIP2025 featuring both of the @QuAntonioMele and @FrancescoMeleAn brothers"  
[X Link](https://x.com/jenseisert/status/1894472570889510916)  2025-02-25T19:40Z 24.8K followers, [----] engagements


"In the second afternoon session at #QIP2025 we see lots of good results on learning random quantum circuits quantum information theory and complexity"  
[X Link](https://x.com/jenseisert/status/1894500904797090060)  2025-02-25T21:33Z 25K followers, [----] engagements


"@PRX_Quantum @FU_Berlin Thanks a lot for posting"  
[X Link](https://x.com/jenseisert/status/1905659236685594689)  2025-03-28T16:32Z 26.7K followers, [---] engagements


"Im excited to share that our quantum team in #Berlin has had five talks accepted at #TQC2025. Our lucky streak of having multiple talks accepted at major quantum computing and information conferences seems to be continuing. The accepted talks are: "A complete theory of the Clifford commutant" @bittel_l JE @lorenzo_leone_ @QuAntonioMele Salvatore Oliviero "Chasing shadows with Gottesman-Kitaev-Preskill codes" @Jonathan_Conrad JE @S_Flammia "Simulating quantum chaos without chaos" Andi Gu @quekpottheories Susanne Yelin JE @lorenzo_leone_ "Online learning of quantum processes" @non_unitary"  
[X Link](https://x.com/jenseisert/status/1920864734678577353)  2025-05-09T15:33Z 25.5K followers, [----] engagements


"There are only a few things in life as joyful as explaining quantum teleportation for the first time in a course on #quantuminformationtheory"  
[X Link](https://x.com/jenseisert/status/1922204436845187475)  2025-05-13T08:17Z 25.6K followers, [----] engagements


"The abelian state hidden subgroup problem: Learning stabilizer groups and beyond Identifying the #symmetry properties of quantum states is a central theme in quantum information theory and quantum many-body physics. In this work we investigate quantum learning problems in which the goal is to identify a hidden symmetry of an unknown quantum state. Building on the recent formulation of the state hidden subgroup problem (#StateHSP) we focus on abelian groups and develop a quantum algorithmic approach to efficiently learn any hidden symmetry subgroup in this case. We showcase the versatility of"  
[X Link](https://x.com/jenseisert/status/1925416675005882656)  2025-05-22T05:01Z 26K followers, [----] engagements


"Hardware-tailored logical Clifford circuits for stabilizer codes This first first author paper of Eric Kuehnke appeared on the arXiv yesterday but was not picked up by Scirate but only today. It suggests novel strategies for implementing Clifford unitaries at the logical level of a given stabilizer code in #quantumerrorcorrection under hardware constraints. https://scirate.com/arxiv/2505.20261 https://scirate.com/arxiv/2505.20261 https://scirate.com/arxiv/2505.20261 https://scirate.com/arxiv/2505.20261"  
[X Link](https://x.com/jenseisert/status/1927603060756316260)  2025-05-28T05:49Z 25.7K followers, [----] engagements


"Quantum computing and artificial intelligence: status and perspectives In recent years several research lines became important that are located at the intersection of the study of quantum computers and of notions of artificial intelligence. This white paper discusses and explores the various points of intersection between #quantumcomputing and #artificialintelligence (AI). It describes how quantum computing could support the development of innovative AI solutions. It also examines use cases of classical AI that can empower research and development in quantum technologies with a focus on"  
[X Link](https://x.com/jenseisert/status/1929386281525477738)  2025-06-02T03:55Z 25.8K followers, [----] engagements


"Who knows if we could be celebrating [----] as the @QuantumYear2025 if Max Born Wolfgang Pauli and Pascual Jordan hadnt happened to meet by chance on a train in July [----]. Two months later the mathematical elaboration of Werner Heisenbergs idea of quantum mechanics was on the table. An article in the leading daily newspaper @Tagesspiegel on #Berlin as a place for doing good research on quantum science and technology. And what @Berlin_Quantum and several other initiatives have to do with it."  
[X Link](https://x.com/jenseisert/status/1930909336231948461)  2025-06-06T08:47Z 25.8K followers, [----] engagements


"As always I found the quantum information theory meeting in #Benasque truly wonderful"  
[X Link](https://x.com/jenseisert/status/1936398524436144435)  2025-06-21T12:19Z 26.4K followers, [----] engagements


"@boyphysiker @aekert This picture is particularly funny since I met you in Benasque and Jos Ignacio in Edinburgh in the same week"  
[X Link](https://x.com/jenseisert/status/1938570375664644321)  2025-06-27T12:09Z 26K followers, [---] engagements


"It has been a great pleasure and lots of fun to discuss with @DoritAharonov @travishumble and Sarah Sheldon the future of #quantumcomputing hosted by the wonderful @Liv_Lanes as part of the @qiskit @IBMResearch summer school on quantum computing. Thanks for the time and the thoughts (and the invitation of course)"  
[X Link](https://x.com/jenseisert/status/1946275556359541186)  2025-07-18T18:27Z 26.3K followers, [----] engagements


"Sweden is such a wonderful place in summer"  
[X Link](https://x.com/jenseisert/status/1956990558632808547)  2025-08-17T08:04Z 26.7K followers, [----] engagements


"A fun discussion at the Oxford Union at #Seeqa2025 circled around the question whether we can reasonably expect quantum computers to have a bigger impact on our lives than classical computers. This is a pretty high bar to meet"  
[X Link](https://x.com/jenseisert/status/1961304044267245805)  2025-08-29T05:44Z 26.7K followers, [----] engagements


"It is once again the time of year when the @MunichQuantum annual meeting is taking place in Eichsttt with days packed with engaging discussions and presentations of impressive results. Julia Rucha Andrea Lenz Stefan Filipp and Michael Hartmann are kicking off the first session"  
[X Link](https://x.com/jenseisert/status/1972947035650224468)  2025-09-30T08:50Z 27K followers, [---] engagements


"Variational optimization of projected entangled-pair states on the triangular lattice A new physics-informed #tensornetwork ansatz performs well on quantum models on triangular lattices. In detail we introduce a general corner transfer matrix renormalization group algorithm tailored to projected entangled-pair states on the triangular lattice. By integrating automatic differentiation our approach enables direct #variational energy minimization on this lattice geometry. In contrast to conventional approaches that map the triangular lattice onto a square lattice with diagonal"  
[X Link](https://x.com/jenseisert/status/1975518279671202183)  2025-10-07T11:07Z 27.1K followers, [----] engagements


"@lucasoeth Well your question is a bit like the analogon of the Beatles getting a Rolling Stones Music award. And then someone asks great the Beatles what did they do Music of course"  
[X Link](https://x.com/jenseisert/status/1975936912746819965)  2025-10-08T14:50Z 27.1K followers, [---] engagements


"@lucasoeth And those who are in the range of winning the Nobel prize (or starting the field of quantum information science such as Charles Bennett of the first post) are usually so famous that their research field is commonly known. If not Google of ChatGPT would explain it in a second"  
[X Link](https://x.com/jenseisert/status/1975937215378457015)  2025-10-08T14:51Z 27.1K followers, [---] engagements


"Stability of digital and analog quantum simulations under noise How many times have I been asked how to fairly compare the robustness of digital and analog quantum simulations Immanuel Bloch for example rightfully keeps asking this question. Here we made an attempt to bring light into the question from a rigorous perspective. The upshot is that on average analog quantum simulation fares well in the robustness against noise. To the point #quantumsimulation is a central application of near-term quantum devices pursued in both analog and digital architectures. A key challenge for both paradigms"  
[X Link](https://x.com/jenseisert/status/1976536239735034178)  2025-10-10T06:32Z 27.1K followers, [----] engagements


"Last night I had the pleasure of discussing the perspectives of #quantumcomputing and #artificialintelligence in Germanyand of keeping high-tech topics on the radar in the country in the first placewith an eminent panel consisting of Alexandra-Gwyn Paetz Head of Technological Sovereignty and Innovation at the @bmftr_bund Heyo Kroemer Head of the @ChariteBerlin Dr. Miriam Meckel Professor and Executive Chairwoman of ADA Dorothee Br Federal Minister at the @bmftr_bund and @CarstenPolenz Head of the Quantum Team at @SAP. The event took place at the invitation of @ssoekadar (warm thanks again)"  
[X Link](https://x.com/jenseisert/status/1976547160272318597)  2025-10-10T07:15Z 27.1K followers, [----] engagements


"David Gelbwaser on strong coupling in #quantumthermodynamics in #BadHonnef"  
[X Link](https://x.com/jenseisert/status/851712623678717954)  2017-04-11T08:24Z 23K followers, [--] engagements


"Come work with us We offer another round of attractive #postdocpositions and #PhDpositions in #quantuminformationtheory on topics ranging from abstract #mathematical themes to pragmatically motivated questions in an open and stimulating discussion climate. Topics include - #quantuminformationtheory - #quantumerrorcorrection - #tensornetworks - #quantumalgorithms. https://www.physik.fu-berlin.de/en/einrichtungen/ag/ag-eisert/Open-Positions/ https://www.physik.fu-berlin.de/en/einrichtungen/ag/ag-eisert/Open-Positions/"  
[X Link](https://x.com/anyuser/status/1842058996754067749)  2024-10-04T04:27Z 28.5K followers, 24.6K engagements


"Sun and ice"  
[X Link](https://x.com/anyuser/status/2022995906757525960)  2026-02-15T11:26Z 28.5K followers, [---] engagements


"Photons are indistinguishable and this makes certification - as it is relevant for photonic state preparations and computing - a subtle issue. We introduce methods and a mindset for certification of linear optical quantum state preparation that work in the light of this and explore them experimentally. In detail certification is important to guarantee the correct functioning of quantum devices. A key certification task is verifying that a device has produced a desired output state. In this work we study this task in the context of photonic platforms where single photons are propagated through"  
[X Link](https://x.com/anyuser/status/2022187458167755159)  2026-02-13T05:53Z 28.5K followers, [----] engagements


"Quantum software is essential to make quantum technology work. The #QuantumSoftwareAlliance is a network of research institutions focused on making quantum computing practical through software with an emphasis on co-design algorithm discovery verification benchmarking and interoperability. The web page is now up and alive and has been announced today during the last event of the @QuantumYear2025. We at @FU_Berlin are happy to have contributed to this effort. https://quantumsoftwarealliance.org https://quantumsoftwarealliance.org"  
[X Link](https://x.com/anyuser/status/2021880384053518730)  2026-02-12T09:33Z 28.5K followers, [----] engagements


"Stoquastic Hamiltonians avoid the sign problem in Monte Carlo simulations so they are often viewed as the easy corner of many-body physics. We show that this intuition fails. Even under strict physical structure estimating the ground-state energy remains computationally intractable. Earlier work proved MA-hardness for general stoquastic Hamiltonians but did not enforce geometric locality. Our results close that gap by establishing MA-hardness for nearest-neighbour geometrically local models in two dimensions and on a line (one dimension) all with constant local dimension of qudits. We give"  
[X Link](https://x.com/anyuser/status/2021628759061737523)  2026-02-11T16:53Z 28.5K followers, [----] engagements


"Notions of algebraic geometry have something interesting to say about state preparation in linear optics and photonic quantum computing. A major challenge in #photonic quantum technologies is developing strategies to prepare suitable discrete-variable quantum states using simple input states linear optics and auxiliary photon measurements to identify successful outcomes. Fundamentally this challenge arises from the lack of strong non-linearities on the single-photon level meaning that photonic state preparation based on linear optics cannot benefit from the deterministic gate-based approach"  
[X Link](https://x.com/anyuser/status/2021462288352383098)  2026-02-11T05:52Z 28.5K followers, [----] engagements


"Extreme ice"  
[X Link](https://x.com/anyuser/status/2021130037676703820)  2026-02-10T07:52Z 28.5K followers, [---] engagements


"Quantum computers will finally be useful: What's behind the revolution. An interesting read and good article in @Nature by @dcastelvecchi. https://nature.com/articles/d41586-026-00312-6 https://nature.com/articles/d41586-026-00312-6"  
[X Link](https://x.com/anyuser/status/2019321985352802513)  2026-02-05T08:07Z 28.5K followers, [----] engagements


"Our perspectives article @preskill is explicitly mentioned as a goalpost"  
[X Link](https://x.com/anyuser/status/2019322084296671253)  2026-02-05T08:07Z 28.5K followers, [---] engagements


"The always eloquent Nadya Mason on the promise of Quantum [---] and how to build the quantum workforce. https://share.transistor.fm/s/226ce19a https://share.transistor.fm/s/226ce19a"  
[X Link](https://x.com/anyuser/status/2019164306362028470)  2026-02-04T21:40Z 200.6K followers, [----] engagements


"At the rump session of #QIP2026 @ElhamKashefi announced the #QuantumSoftwareAlliance stressing the importance of research and development of quantum algorithms and software concomitant with quantum hardware development. A quantum computer needs both hardware and software. This is just a cute and somewhat superficial teaser; there is a lot more substantial work to come in the very near future"  
[X Link](https://x.com/anyuser/status/2017162539101008000)  2026-01-30T09:06Z 28.5K followers, [----] engagements


"A wonderful and highly compressed medley on the consequences for quantum information theory when one is limited to computationally efficient steps at #QIP2026 impressively delivered by Lorenzo Leone and Thomas Hahn. If somebody had told me years ago that quantum information theory changes when only efficient quantum operations are used I would have been astounded. "Entanglement theory with limited computational resources" @lorenzo_leone_ Jacopo Rizzo Jens Eisert Sofine Jerbi "Quantum computational entropies" @avidanoam Thomas Hahn Rotem Arnon @joerenes "Computational relative entropy" @jj_xyz"  
[X Link](https://x.com/anyuser/status/2016159941757632925)  2026-01-27T14:42Z 28.5K followers, [----] engagements


"At #QIP2026 @lorenzo_leone_ gives a wonderfully clear talk about our work on the Clifford commutant. https://arxiv.org/abs/2504.12263 https://arxiv.org/abs/2504.12263"  
[X Link](https://x.com/anyuser/status/2015796460357394934)  2026-01-26T14:38Z 28.5K followers, [----] engagements


"Reposted for an incomplete name tag"  
[X Link](https://x.com/anyuser/status/2015796552262963380)  2026-01-26T14:38Z 28.5K followers, [---] engagements


"And #QIP2026 has officially started"  
[X Link](https://x.com/anyuser/status/2015693639599448241)  2026-01-26T07:49Z 28.5K followers, [----] engagements


"Formalising an operational continuum limit of quantum combs Quantum combs or quantum process tensors naturally capture multitime processes in quantum mechanics. We bring such combs to the continuum limit capturing quantum fields. Concretely quantum #combs are powerful conceptual tools for capturing multi-time processes in quantum information theory constituting the most general quantum mechanical process. But despite their causal nature they lack a meaningful physical connection to time - and are by and large arguably incompatible with it without extra structure. The subclass of quantum combs"  
[X Link](https://x.com/anyuser/status/2015687569187409947)  2026-01-26T07:25Z 28.5K followers, [----] engagements


"Skating on ice in the morning now on the way to #QIP2026"  
[X Link](https://x.com/anyuser/status/2015424494718857273)  2026-01-25T14:00Z 28.5K followers, [----] engagements


"This is a paper I very much like for its foundational and somewhat "rebellious" character: We show that notions channel capacities are strongly altered if one simply assumes that all operations one can implement are efficient. To the point #quantumchannelcapacities are fundamental to quantum information theory. Their definition however does not limit the computational resources of sender and receiver. In this work we initiate the study of computational quantum capacities. These quantify how much quantum information can be reliably transmitted when imposing the natural requirement that en- and"  
[X Link](https://x.com/anyuser/status/2014544888621126020)  2026-01-23T03:45Z 28.5K followers, [----] engagements


"What a pleasure to have @adam_wills1 visiting us for this week to discuss notions of #quantumerrorcorrection"  
[X Link](https://x.com/anyuser/status/2013675089405911485)  2026-01-20T18:08Z 28.5K followers, [----] engagements


"Chasing shadows with Gottesman-Kitaev-Preskill codes We explore a research question at the intersection of #quantumerrorcorrection and #quantumlearningtheory. Concretely we consider the task of performing shadow tomography of a logical subsystem defined via the Gottesman-Kitaev-Preskill (#GKP) error correcting code. Our protocol does not require the input state to be a code state but is implemented by appropriate twirling of the measurement channel such that the encoded logical tomographic information becomes encoded in the classical shadow. We showcase this protocol for measurements natural"  
[X Link](https://x.com/anyuser/status/2013564751339557108)  2026-01-20T10:50Z 28.5K followers, [----] engagements

Limited data mode. Full metrics available with subscription: lunarcrush.com/pricing