I was at a journal club some time around 2020 where we discussed a paper that I am trying to find again. The claim was that it had experimentally shown that wave function collapse was not "instant" by doing quantum tomography on a system being measured, and seeing the system go continuously from a superposition to an eigenstate of the measured basis. It probably involved some kind of weak measurement.

Can you point me to any literature performing such an experiment?

Candidates I have looked at so far, which do not seem to be the paper I am looking for, are


1 Answer 1


You may be thinking of this paper, which concerns not measurement per se but quantum "jumps" between energy levels in an artificial atom. The jump is inferred from a break in the fluorescence of the three-level "atom", which I think would count as, as you say, some kind of weak measurement. https://www.nature.com/articles/s41586-019-1287-z


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.