More Quantum

It happened again.

This week an amazing result has been announced on the arXiv: a proof that the NPA hierarchy does not converge exactly at a finite level even in the CHSH scenario.

I’ve just read this essay by the famous mathematician Terence Tao together with an artist about the use of AI in mathematics.

The open access movement has taken over the world.

A friend of mine, Miguel Navascués, has just started a new science blog, which I’m happy to advertise here: https://sciencecommunicationexplained.blogspot.com/ His inaugural post, written in his signature incendiary style, is about a subject that has pers…

A couple of years ago I was complaining about the lack of direct support for SDPs with complex numbers, and documenting my efforts to get it working on SeDuMi via YALMIP.

An old friend of mine, Jacques Pienaar, wrote to me last Friday asking whether this paper by Wang et al. is bullshit, or is he going crazy.

If you have used the NPA hierarchy to bound a Tsirelson bound, and want to recover a state and projectors that reproduce the computed expectation values, life is easy.

I’m happy to announce the 0.3 release of Ket.jl.

My review about semidefinite programming was accepted by Reviews of Modern Physics.