Bell ruled out common causes for quantum correlations. Years ago, we ruled out all falsifiable direct cause models. Some months ago, I decided to look again into that and improve those criteria. It's done, with great collaborators and AI used as a tool and not a coworker :-) arxiv.org/abs/2608.05271

Cluster-State Witnesses of Finite-Speed Hidden Influences

Bell experiments rule out local common-cause explanations of quantum correlations, yet they do not exclude hidden influences that travel faster than light while still having a finite speed in a prefer...

arxiv.org

Every civilization have martial heroes, people with highly sophisticated skills developed for war. Then firearms came, which any idiot can use, and became the tool for the task. Martial arts remain as prowess for sports or cultural shows. Are mathematicians the next samurais?

arxiv.org/abs/2605.22218 Enjoy 😊

Three sins against physics by an exaggerated quantum information perspective

I point out three ways in which the perspective of quantum information may lead to distorted claims about physics: forgetting that light does not need to be quantised to show coherence; ignoring the g...

arxiv.org

On the International Day of Women and Girls in Science, we celebrate Hu Mengyao who has received the CQT Alice Postdoctoral Fellowship! 👏 She works on Bell nonlocality in many-body quantum systems in the group of Valerio Scarani. Read our interview with Mengyao: www.cqt.sg/highlight/20...

Reminder: I am helping people with greater potential.

We are having a very nice workshop on macroscopic superpositions in levitated systems. My latest preprint is arxiv.org/abs/2509.17081. Can you guess in which direction my interests are evolving? :)

Hiding career advice on your website? 😜 @entangledanarchist.bsky.social

Postdoc opening in my group: careers.nus.edu.sg/job/Research...

A pity that I don't work in topological quantum computing: I could have used this Andalusian motive in my talks.

Have you got a PhD offer from a country that may revoke your visa? Let's have a chat 😉

Reinhard Werner giving a talk about von Neumann and quantum, competent and clear as usual. On this slide, the deep origin of why quantum information people don't like most quantum textbooks. It's about the representation of measurements: vN's axioms ended up missing POVMs.

Fluctuation relations in the statistics of UNO: www.cqt.sg/highlight/20... If this makes you laugh (at us) and then makes you think (about fluctuation theorems), consider nominating us for the igNobel prize :)

www.ricemedia.co/the-symbolic... "The root of the matter—according to NUS, at least—was that the school didn’t realise that their students were interested in the books. Which, when you think about it, is quite absurd for an actual university to state."

The Symbolic Weight of Yale-NUS's Discarded Books

Uni students care a lot about books—who knew?

ricemedia.co

Workshop Singapore - Munich: a statement of priorities.

(7/7)

One of those spam conferences -- and not even on spectroscopy.

18 years ago like today I left Geneva to take up the job that is still mine. Celebrating with my group, and thinking of all the amazing people I got to meet.

It should be thinking about new research directions like me...

One of those times when I have to do this with my research. Let's enjoy the ride!

I should join Signal, I heard you may be added to interesting group chats 🤔

The talk of my postdoc was more impactful than mine. That's how it should be: place aux jeunes!

Mark M. Wilde@markwilde.bsky.social · 2y ago

Clive Cenxin Aw "Irreversibility as the Dependence on Bayesian Priors" #QuantumResources2025

Quantum resource theories looking like an exercise in esoteric theology of an Italian heretic (the speaker was Japanese, which makes this either entirely coincidental or even creepier).

The past state of a quantum object depends on your beliefs: arxiv.org/abs/2502.10030

The state of a quantum system is not a complete description for retrodiction

A mixed quantum state can be taken as capturing an unspecified form of ignorance; or as describing the lack of knowledge about the true pure state of the system ("proper mixture"); or as arising from ...

arxiv.org