new paper! how can one predict and detect magic of many-body quantum states using few body measurements ? what are the fundamental complexity-theoretic limitations ? we tackle this question in arxiv.org/abs/2602.18939 1/n

Sometimes, two rounds of revision is simply not enough. Especially for works that have extremely complicated technical contributions, or particularly subtle conceptual proposals, it would be better to have more rounds.

That's super interesting! I wonder what new things will come out of formalizing quantum information theorems.

Are you ready for quantum vibes?! arthurmerlean.com

I've recently joined my first ever presential Chess tournment. I'm pretty happy that even without playing for about 8 or 9 months (and without studying either) I've ended up with 3.5/7. Let's see how I'll perform for future ones.

I am extremely excited to share our latest news: LANL formed a Center for Quantum Computing!! This Center will enhance our quantum workforce via co-location, and will even host the Summer School! So, if you applied for it, you might be the first cohort in the Center! www.lanl.gov/media/news/0...

Always nice to see that quantum foundations have survived the wave of capitalism that has swept through quantum. Today Hausmann and Renner from ETH show that quantum states are more than just a few probability distributions in a trenchcoat. arxiv.org/abs/2601.18872

I wonder if, internally, the organizers of the annual conferences of Quantum Information in Spain [Informacion Cuantica en Espana] have conceived changing the acronym of the conference due to recent events. indico.ific.uv.es/event/7934/

Fresh from the press! 📃🎆 journals.aps.org/pra/abstract... We advance the study of basis-independent formulations of quantum resources that are based on multi-states (equivalently sets of states, or yet classical-quantum channels).

Always a good talk

I'm happy to join PRA's editorial team as an Early Career Board Member! The journal has been a (if not *the most*) crucially important scientific source for quantum information, foundations, and computation. It's a huge honour! @apsphysics.bsky.social #PRA #Quantum

Dominik Hangleiter weighs in with an informative post about a much debated question: Has quantum advantage been achieved? This is the first post in a three-part series. quantumfrontiers.com/2026/01/06/h...

A dream job opportunity! Our team is hiring a Senior Research Scientist in Quantum Error Mitigation Theory on the Quantum AI team, and we get to be colleagues. www.google.com/about/caree...

Why are academic societies still on X it must violate all their code of conducts?

The Institute of Physics (@iop.org), its publishing arm @ioppublishing.bsky.social, and its flagship magazine @physicsworld.bsky.social (which I work for) figured this out a long time ago. If you’re a physicist/astronomer/science teacher/something else relevant, follow them & show them some love!

New paper published in @physreva.bsky.social, jointly with Kyrylo Simonov (Vienna) and Rafael Wagner (INL/Minho/Ulm)! We simplify the estimation of multivariate traces/Bargmann invariants using partial classical info. Thanks @quantumrw.bsky.social and Kyrylo! journals.aps.org/pra/abstract...

Deeply honoured to have been named one of the Quantum 100 for the UN'S International Year of Quantum Science and Technology (IYQ)! quantum2025.org/quantum-100/...

Thrilled to share that I have been awarded the very prestigious Alexander von Humboldt Postdoctoral Fellowship! :) #HumboldtFellowship

The @ccbpp.bsky.social Spring School on near-term quantum computing is back! If you are a young (PhD/MSc) researcher in quantum science and want to get exposed to the recent developments on quantum computing, do not hesitate coming to Benasque on March 15 - 21 next year! www.benasque.org/2026ntqc/

We recently received a referee report from Phys. Rev. Lett. @apsphysics.bsky.social that was obviously written by generative AI. It is so bizarre to read it; I have never received anything like it before. What measures is @apsphysics.bsky.social taking to ensure the integrity of the review process?

Peter Shor: we haven't found many new quantum algorithms, in part, because we need larger quantum devices for testing our heuristics. He gives several examples of algorithms that were discovered computationally, including turbo codes, @fermilab.bsky.social quantum symposium by the SQMS center.

Newly published in Quantum: Consistent circuits for indefinite causal order by Augustin Vanrietvelde, Nick Ormrod, Hlér Kristjánsson, and Jonathan Barrett doi.org/10.22331/q-2...

Probably -- as far as I know -- the first contextuality-based quantum information advantage from the Google Quantum AI team. scirate.com/arxiv/2512.0...

New preprint out! 🎉 I’ve just submitted my #PhD_thesis to the #arXiv. Chapter 7 contains several new constructions and a few new results on the geometry of sets of Bargmann invariants. Most notably, in Theorem 7.13 I prove the convexity of a broad class of sets of (tuples of) unitary invariants.

arxiv.org/abs/2511.15806 If correct, that's a huge result!

Review: Ultrafast physics with structured light ⚛️ by Yiqi Fang, Zijian Lyu & Yunquan Liu www.nature.com/articles/s42...

My student @johnbostanci.bsky.social, Chinmay Nirkhe, Jonas Haferkamp, and Mark Zhandry have put out a tour-de-force paper that shows, relative to a classical oracle, QMA is stronger than QCMA -- i.e., quantum proofs >> classical proofs. Congratulations to the authors! arxiv.org/abs/2511.09551

Well-informed and accurate takes on the current state of quantum computing by @dangaristo.bsky.social. Good listen if you're outside the field or just entering it and want to get an honest picture. Kudos for using the term "physics experiment" instead of "computer", and for coining "quantum FOMO".

A recent @nature.com article claims that classical (unquantised) gravity produces entanglement. We show that their model does not produce entanglement. Even if the model produced entanglement, it would be mediated by the quantised matter interaction, and not gravity. scirate.com/arxiv/2511.0... 🧪⚛️

Day 2 of the #NaturalPhilosophy Symposium concluded with a panel discussion featuring the day's speakers: Alan Guth, Jennifer Nagel, David Albert, Simon DeDeo, Emily Riehl, and Anil Seth. Stay tuned for the exciting final day of the Symposium! www.youtube.com/watch?v=Apnv...

The neat thing about writing about foundations of quantum mechanics is that it makes everyone mad, often for completely different reasons.

I wouldn't worry about a QIP reject. The conference is too crowded and big now, and so the PC is desperate to write down meaningless reasons for rejection. In my opinion, the smaller conferences are more significant these days, where more meaningful research interactions can take place.

Our new Helios quantum computer. Read all about it. arxiv.org/abs/2511.05465 #quantum #quantumcomputing #quantinuum #helios

Our new quantum computer Helios is out. Take a look at this paper for technical details of its design, operations, and benchmarks. arxiv.org/abs/2511.05465

Had a great time in Paris! Talked about our recent preprint arxiv.org/abs/2509.10949 #QuiDiQua3 was great, lots of greats discussions, and talks. Happy also to catch up on some good friends :) Can't wait for #QuiDiQua4 (next year in Brussels!) #QuantumInfo #Contextuality #QuantumOptics

Department of Physics at UIUC is looking for an Assistant Professor in Theoretical Quantum Information Science, including, but not limited to, quantum error correction, quantum optics, quantum algorithms, and AMO physics. Application deadline: Dec 1 illinois.csod.com/ux/ats/caree...

Happy to share our TEDx talk where me and my twin @antonioannamele.bsky.social chat about quantum technologies! (Italian only) youtu.be/yzXUsDUPt8A?...

#QuiDiQua3 alert!! Happy to be in Paris for such a nice conference in quantum info, optics, and foundations all linked by quasiprobability distributions!

Now under construction: The bridge connecting research on quantum matter and quantum information in the Ginsburg Center @caltech.edu to the high energy theory group in Downs-Lauritsen Laboratory. Exciting!

People take for granted the fact that mangos are so delicious, but most don’t know that every logical mango is made out of many physical mangos.

The Paul Ehrenfest Best Paper Award for #Quantum Foundations for 2024 has been awarded to Rainer Verch and Chris Fewster in recognition of their outstanding paper, “Quantum Fields and Local Measurements.” Congratulations!

Learn more about this discovery in the scientific paper on "Error detection without post-selection in adaptive quantum circuits". 🔬: arxiv.org/abs/2509.25326

I am super happy to have finished my #PhD in #Quantum!! Thank you all for my friends and for my amazing supervisors!! I am super happy! Soon I'll post my thesis on arXiv :)

Thinking of patenting my favorite method for ranking researchers: reading their papers and deciding whether they are good.

Gold

I also think its a bit weird that the paper has not addressed many known mechanisms/no-go theorems showing that this is indeed impossible. Which aspects of these theorems are you avoiding? This work is only bringing confusion to an already delicate highly interdisciplinary research topic.

As promised... No, classical spacetime can’t produce entanglement. I can create entanglement by turning a knob on a laser, but the knob isn't mediating entanglement. Is the knob "producing" the entanglement? This week's Nature paper is causing confusion! superposer.substack.com/p/no-classic... 🧪⚛️

“The public has a distorted view of science, because children are taught in school that science is a collection of firmly established truths. In fact, science is not a collection of truths. It is a continuing exploration of mysteries” Freeman Dyson (1923–2020), in "How We Know", 2011

Ruhende HI-Viren aus der Deckung holen: Das kann ein körpereigenes Protein🦠, das als Vitamin-A-Transporter 🚚bekannt ist. Ulmer Forschende haben diesen natürlichen Wirkstoff zur Latenz-Umkehr entdeckt. Die ist ein weiterer Schritt in Richtung AIDS-Heilung. t1p.de/RBP4 *wt/🔬: Pastorio #uulm