5 papers · 1 filter
Self-testing with untrusted random number generators
Moisés Bermejo Morán, Ravishankar Ramanathan
Self-testing--the attractive possibility to infer the underlying physics of a quantum device in a black-box scenario--has gained increased traction in recent years, with applicatio…
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…
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…
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…