Intrinsic randomness under general measurements
Organizer
Speaker
Time
Friday, May 12, 2023 9:30 AM - 10:30 AM
Venue
JCY-1
Online
Tencent 494 8360 9451
(2023)
Abstract
Quantum physics can provide intrinsically unpredictable randomness which is a significant resource in cryptography. How to quantify intrinsic randomness of the outcomes from a generic measurement is a basic but unsettled problem. We establish an adversarial scenario and extend the usual Naimark extension approach. Then we characterize intrinsic randomness and find some interesting phenomena. For instance, under certain measurements such as the symmetric and information-complete measurement, all states have nonzero randomness. This observation can help us design source-independent quantum random number generators.
Speaker Intro
Hao Dai received her Ph.D. from the Chinese Academy of Sciences in 2020. Following that, from 2020 to 2023, she worked as a postdoctoral fellow at Tsinghua University. In 2023, she has become an Assistant Professor at BIMSA. Her primary research interests encompass the domains of quantum information and computation.