From the 1 of 6 linked papers with an AI index.
6 papers
When Quantum Nonlocality Does Not Play Dice
Ravishankar Ramanathan, Yuan Liu, Stefano Pironio
The authors demonstrate that certain Bell inequalities can be maximally violated by quantum correlations yet certify no randomness for any fixed input pair, and they construct expl…
Quantum Nonlocality and Device-Independent Randomness Robust to Relaxations of Bell Assumptions
Ravishankar Ramanathan, Yuan Liu
The question of certifying quantum nonlocality under a relaxation of the assumptions in the Bell theorem has gained traction, with potential for device-independent applications und…
No Bound Randomness in Quantum Nonlocality
Ravishankar Ramanathan, Yuan Liu, Yutian Wu +1
Recently it has been found that there exist maximally nonlocal quantum correlations that fail to certify randomness for any fixed input pair, rendering them useless for device-inde…
Optimal and Feasible Contextuality-based Randomness Generation
Yuan Liu, Ravishankar Ramanathan
Semi-device-independent (SDI) randomness generation protocols based on Kochen-Specker contextuality offer the attractive features of compact devices, high rates, and ease of experi…
Accumulation of Device-Independent Quantum Randomness against Time-Ordered No-Signalling Adversaries
Ravishankar Ramanathan, Yuan Liu, Yutian Wu
The question of security of practical device-independent protocols against no-signalling adversaries, the ultimate form of cryptographic security, has remained open. A key ingredie…
Equivalence between face nonsignaling correlations, full nonlocality, all-versus-nothing proofs, and pseudotelepathy
Yuan Liu, Ho Yiu Chung, Emmanuel Zambrini Cruzeiro +3
We show that a quantum correlation is in a face of the nonsignaling polytope with no local points if and only if has nonlocal content 1, if and only if allows for a Gre…