So sick! How did you make this map?

Quantum Quest Portuguese Version. An animated short explaining quantum science in an accessible way. YouTube video by AMBER Centre

Quantum Quest is now available in five languages! 🐈‍⬛ ambercentre.ie/additional-l...

For those of you who know me, Bob’s voice might sound a little familiar in Portuguese… www.youtube.com/watch?v=wfIH...

#SciComm #STEMEducation #Quantum

new paper!

energy is one of the simplest and main quantum observables: it is experimentally friendly and theoretically simple. can we witness magic by looking at energy/heat measurements?

well, "every little heat is magic"! arxiv.org/abs/2604.08663 1/n

Strict or correlated catalysis?

Researchers lay out rules for robust catalysis - CQT - Centre for Quantum Technologies The group of CQT Fellow Nelly Ng and collaborators find conditions that make quantum catalysts fully reusable

CQT Fellow Nelly Ng, group members Jeongrak Son and Ray Ganardi and their collaborators present a new analysis of the conditions for robust catalysis in the quantum regime.

My debut as a professional Maxwell’s demon designer

Over 30 years of Statistical and Nonlinear Physics in _Physical Review E_ APS Division of Statistical and Nonlinear Physics and <em>Physical Review E</em> review over 30 years of research in the division’s areas.

🎉 30 years of Statistical & Nonlinear Physics — and we're just getting started!
To mark the transition from APS G to D, @physreve.bsky.social have highlighted the most influential papers that drew the map of the field.
📖 journals.aps.org/over-30-years
#StatisticalPhysics #DSNP #Physics

The Qalypso School on Quantum Science in Malta returns for its 3rd edition Aug 31 - Sep 4 this year! 🏖️

We have a great line up of lecturers covering Quantum Optimisation, Quantum Thermodynamics and Quantum Gibbs Sampling.

Pre-registrations opens today at forms.gle/3NkMJ3Br9V8b...

Do Share!

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

Happy to see our paper Uniqueness of Purifications Is Equivalent to Haag Duality with @arrr.de and @stotti-alex.bsky.social published in PRL! 🥳

doi.org/10.1103/d7nm...

Amazing! Congrats Lauritz.

Disclaimer: this is a very bad thread from someone who never writes threads and is currently on the bus (checking my stop every 10 seconds)… But the paper itself is nicely written 😅

This was a really nice collaboration with the brilliant master’s student Xiaotian Yang, which started with Ulrik and me during a visit to Japan, and really took shape when Santiago Zamoras and Rafael Chaves spent time with Jonatan and me. Also: my first paper as last author. Hope you enjoy!

This allowed us to probe the nonlocality of two paradigmatic states: W and GHZ. And we found that GKP states provide strong and robust multipartite nonlocality: not high critical squeezing, tolerance to loss, and robustness to noise - all treated almost analytically. (5/n)

…no Bell violation in the bipartite case using only homodyne (and stabilizer resources, of course). For the multipartite case, however, we found a nice analytical way of computing the conditional probabilities! (4/n)

(3/n) This is exactly where GKP changes the picture. It turns homodyne + classical binning into effective qubit measurements, while keeping all the experimental advantages. To start with, we looked at finite-energy (i.e. “realistic”?) GKP states and proved a no-go result:

Homodyne detection is a natural candidate when talking about Bell nonlocality: it closes the detection loophole, is easy to implement, and comes with high efficiency… But it is also strongly constrained in continuous-variable (CV) systems. 2/n

Can Gottesman–Kitaev–Preskill (GKP) encoding turn homodyne detection into a practical tool for revealing Bell nonlocality?

The answer is yes, and in fact GKP states also lead to strong and robust multipartite nonlocality with homodyne detection!

Today on arXiv: arxiv.org/abs/2601.16189 1/n.

Chain of quantum two level systems. Excitations traveling from left to right, each time marking a tick when they leave on the right.

From one tick to the next, small timing uncertainties in clocks usually add up because of the independence of errors. Using fermions tunneling through a quantum wire as clock ticks, we found a way to build a clock where errors cancel out rather than accumulate. arxiv.org/abs/2601.10785

Save the date: sun, sea & science, where wave–particle duality means talks in the morning, surf in the afternoon. Quantum at the Dunes (IIP, Natal 🇧🇷) — School 23–27 Feb 2026 → Workshop 2–6 Mar 2026. www.even3.com.br/quantum-at-t...

Recovery of the second law in fully quantum thermodynamics Quantum thermodynamics investigates how robust the second law of thermodynamics serves as the unique fundamental law in the small quantum world. To tackle this problem, the quantum coherence constitut...

Posted a joint work with Naoto Shiraishi on quantum thermodynamics. We managed to characterize the state transformability (for general coherent states!) with a correlated catalyst by the single free energy ordering. arxiv.org/abs/2510.05642

Thank you very much, Jake!!!! You’re awesome.

Quantum metrology in the finite-sample regime

journals.aps.org/prxquantum/a...

We propose an operational framework of #quantummetrology in the practically meaningful regime of a few measurement samples, introducing probably approximately correct (#PAC) metrology.

Thank you for the very kind words, Jake!!!

Our tutorial "A friendly guide to exorcising Maxwell's demon" (journals.aps.org/prxquantum/p...) is out!

The big question after the tutorial is whether I’m finally done drawing demons?

When I grow up I wanna be like Kristian: talk about quantum gravity while wearing a black-flag t-shirt.

(arxiv.org/abs/2503.03585)

Whether or not you're a fan of thermal operations, there's something fundamentally special about them: by pinning down what it means to equilibrate, thermal operations uniquely emerge! With this, we also uncover nice hierarchy of unital channels, in contrast with the classical Birkhoff theorem.

Very beautiful results, Nelly! Already started my late morning reading it 😍

My happiest memories are tied to this university, this office, and that chapter of my life. Even cooler to see my old office mate getting his PhD tomorrow! Finally get to use this picture (taken in 2021, just sitting in my gallery waiting for this moment):

Back in Krakow after 1.5 years. First stop: my old office (just had to see it). Somehow got in and boom 💥: everything was exactly the same: Kamil’s notes on my desk, unfinished (now finished) calcs from Marti’s project, old running gear, and the cactus I bought when I started my PhD!