Skip to main content

New answers tagged

5 votes
Accepted

Why are only projective measurements considered in nonlocal games to get optimal strategy?

As you correctly state, POVMs can be dilated into a projective measurement on a larger Hilbert space. Because we do not restrict the possible dimension of the Hilbert spaces in the game, we can ...
Rammus's user avatar
  • 5,958
2 votes
Accepted

CHSH game sharing more general states

For a general two-qubit state, including mixed ones, the maximal violation was found by the Horodeccy in 1995. If you write the state in the Block decomposition as $$\rho = \frac{1}{4} \sum_{i,j = 0}^{...
Mateus Araújo's user avatar
2 votes
Accepted

For CHSH game, why does the mathematica program gives 75% as the best winning rate when sharing 2 EPR pairs?

I think the problem you're having is with your tensor product structure. If you label the qubits 1 to 4, then your A measurements are on qubits 1 and 2, while your B measurements are on qubits 3 and 4....
DaftWullie's user avatar
  • 59.3k

Top 50 recent answers are included