Time: 10:00 am Beijing time, Oct. 19 (Wed), 2022

Tencent Meeting ID: 591-915-915

URL: https://meeting.tencent.com/dm/SWCzxYheLbqG

Speaker: Xiongfeng Ma (Tsinghua University)

Abstract:

Entanglement lies at the heart of quantum information technology and science as a key feature that distinguishes quantum mechanics from classical ones. The success of many quantum information tasks, including quantum key distribution, quantum metrology, and quantum teleportation, highly depend on various entanglement perspectives. Therefore, developing efficient and effective protocols to detect entanglement has fundamental and practical significance. In this talk, I will first introduce a few commonly-used entanglement detection protocols, like entanglement witness and positive map criteria. Then I will review some of our recent works about entanglement detection, in which we designed many practical protocols and proposed a fundamental limitation regarding the cost of entanglement detection.