Extending the Known Region of Nonlocal Boxes that Collapse Communication Complexity

02/01/2023
by   Marc-Olivier Proulx, et al.
0

Non-signalling boxes (NS) are theoretical resources defined by the principle of no-faster-than-light communication. They generalize quantum correlations (Q), and some of them are known to collapse communication complexity (CC). However, this collapse is strongly believed to be unachievable in Nature, so its study leads to a better understanding of Q. In the present letter, we find a better sufficient condition for a nonlocal box to collapse CC, thus extending the known collapsing region. In some slices of NS, we show this condition coincides with an area outside of an ellipse.

READ FULL TEXT

Please sign up or login with your details

Forgot password? Click here to reset