From dream to reality: The bridge connecting quantum information and matter to high energy physics @caltech.edu now exists.

First cube solved!

To me, one of the most compelling aspects of future quantum computers is that they will be experimental platforms for physicists everywhere. This new manuscript from my former supervisor is a neat implementation of this, where they implement an interaction-free test. arxiv.org/abs/2604.04691

🥳 It was an awesome mtg, where my 🪖 Def and ⚛️ Quantum interests merged. The 1️⃣st Quantum Security Defence World Symposium! 🗝️ 🌏 🚀 Anna: “It began as a Community! is.gd/ljgR0i #QSECDEF2026Paris

Get ready for a "TRANSPARENT tactical battlefield" thanks to quantum security! Report by @amaragraps.bsky.social from the 1st Quantum Security Defence World Symposium.

Is LinkedIn the next quantum realm?

Extremely proud to see our paper "Quantum Convolutional Neural Networks are Effectively Classically Simulable" published in PRX Quantum journals.aps.org/prxquantum/a... This is an instantiation of our work, provable absence of barren plateaus implies classical simulability.

Google Quantum AI now a two-platform company. blog.google/innovation-a...

Big news of the day, at Google we are building both superconducting and neutral atom quantum computers. blog.google/innovation-... #quantum #atom #google

Interesting to include ''complexity'' as a major frontier of physics.

Such a well-deserved honor! Taking Gilles Brassard's quantum info course at UdeM is what got me into the field. It is still the best course I ever attended.

I'm thrilled that Charlie Bennett and Gilles Brassard have received the A. M. Turing Award for “their essential role in establishing the foundations of quantum information science and transforming secure communication and computing.” Congratulations! www.quantamagazine.org/quantum-cryp...

Congratulations to Charles H. Bennett and Gilles Brassard on receiving the 2025 ACM A.M. Turing Award! They are recognized for their essential role in establishing the foundations of quantum information science and transforming secure communication and computing. awards.acm.org/turing @umontreal

[Portuguese post!] Vitória importante para os acadêmicos! Bolsistas agora vao ter acesso à seguridade social. É uma vitória da ciência!!!

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...