As of May 31, 2023, we have updated our Code of Conduct.

Questions tagged [contextuality]

The tag has no usage guidance.

2 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
1 vote
1 answer

What does it mean for two compatible observables to be a "coarse-graining" of a third?

In reading about quantum contextuality, I've encountered the statement that if [A,B] = 0, then there exists another observable C such that the spectral projections of A and B are a coarse-graining ...
Tfovid's user avatar
  • 1,223
0 votes
0 answers

Are functions of commuting measurement operators equivalent to the same functions on the outcomes of those operators?

I.e., is it the case that for all states $\hat{\rho}$, we have that $F(\hat{A}_i, \hat{A}_j, \hat{A}_k, \hat{\rho}) \equiv F(a^{(l)}_i, a^{(m)}_j, a^{(n)}_k)$, where $a^{(l)}_i, a^{(m)}_j$ and $a^{(n)}...
Tfovid's user avatar
  • 1,223