Title: Reliability Function of Quantum Information Decoupling
Speaker: Ke Li（Harbin Institute of Technology）
Time: Wednesday, May 25, 2022, 16:00-17:30 (UTC+8).
Location: Room 201, Ming De Building.
Online access: Zoom Meeting ID: 824 7045 6491, Password: 123399, link：https://zoom.us/j/82470456491?pwd=dGswU3d3RGd1L1d4a3ZvSXdnakVkUT09
Abstract：Quantum information decoupling is a fundamental information processing task, which also serves as a crucial tool in a diversity of topics in quantum physics. I will talk about our recent results on its reliability function, that is, the best exponential rate under which perfect decoupling is asymptotically approached. We have obtained the exact formula when the decoupling cost is below a critical value. In the situation of high cost, we provide upper and lower bounds. These results are given in terms of the sandwiched R\'enyi divergence, providing it with a new type of operational meaning. (Based on joint work with Yongsheng Yao, arXiv:2111.06343)
Reliability Function of Quantum Information Decoupling.pdf
More information about the Functional Analysis Seminar can be found here.
