First cube solved!

As they write in their manuscript

"Cloud-based services are emerging as a new, practical tool for theoreticians to test new ideas and models, (...) and conduct early proof-of-principle demonstrations, without needing to have direct access to an experimental setup. "

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

1st Quantum Security Defence World Symposium! 💚💃 Thank you so much to everyone that took a chance on our first event and joined as speakers and participants! You all made it a roaring success 💥🚀 | A... 1st Quantum Security Defence World Symposium! 💚💃 Thank you so much to everyone that took a chance on our first event and joined as speakers and participants! You all made it a roaring success 💥🚀

🥳 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.

Building superconducting and neutral atom quantum computers An overview of Google Quantum AI’s work on superconducting and neutral atom quantum computers.

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

Building superconducting and neutral atom quantum computers An overview of Google Quantum AI’s work on superconducting and neutral atom quantum computers.

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.

Quantum Cryptography Pioneers Win Turing Award | Quanta Magazine Charles Bennett and Gilles Brassard were recognized for their foundational work in quantum information science.

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!!!

Predicting Magic from Very Few Measurements The nonstabilizerness of quantum states is a necessary resource for universal quantum computation, yet its characterization is notoriously demanding. Quantifying nonstabilizerness typically requires a...

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.

MerLean An Agentic Framework for Autoformalization in Quantum Computation

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.

Los Alamos forms quantum computing-focused research center | LANL Los Alamos National Lab forms quantum computing center, consolidating diverse research to drive innovation in national security, algorithms, and workforce development.

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/

We also show other neat results (e.g. higher order real-valued invariants of multi-states featuring set imaginarity)

Thanks to professors Mao-Sheng Li and Lin Zhang for this collaboration! Hopefully the first of many :)

#QuantumInformation #QuantumResources #Coherence #BargmannInvariant

The only extra information needed is the sign of its imaginary part, which is a truly higher-order information that is not present in two-state overlaps alone.

The information of this sign is the single relational information that requires higher-order invariants.

A major technical results we present is the following:

For qubits, every complex-valued multivariate trace of states (aka Bargmann invariant), like Tr(ρ1ρ2ρ3ρ4), is almost entirely determined by simple two-state overlaps.

One of the main results is beautifully geometric and extremely natural.

For a set of qubit states (think points on the Bloch sphere):

1) The set is incoherent if all their Bloch vectors lie on a single line.
2) The set is imaginarity-free if all vectors lie in a single plane

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

Thanks! :)

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