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YMSC-BIMSA Quantum Information Seminar
Entanglement detection: practical protocols and theoretical analysis
Entanglement detection: practical protocols and theoretical analysis
Organizer
Speaker
Xiongfeng Ma
Time
Friday, November 25, 2022 9:30 AM - 10:30 AM
Venue
JCY-1
Online
Tencent 337 8937 1456
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Abstract
As one of the key properties that distinguish quantum mechanics from the classical one, entanglement lies at the center of quantum information technology and science. The success of many quantum information tasks, including quantum key distribution, quantum metrology, and quantum teleportation, highly depends on the generation of high-fidelity entangled states. Therefore, developing efficient and effective protocols to detect entanglement in real-world systems has practical significance and benefits theoretical studies. In this talk, I will first introduce the definition of entanglement and some 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 entanglement detection protocols and proposed a fundamental limitation regarding the cost of entanglement detection.
Speaker Intro
Xiongfeng Ma is an associate professor at the Institute for Interdisciplinary Information Sciences, Tsinghua University. His main research interest lies in quantum information science, including quantum cryptography and quantum foundation. After obtaining his BSc at Peking University in 2003, Xiongfeng attended the University of Toronto for his PhD degree. From 2008 to 2011, he did his post-doc and visiting positions at the University of Waterloo, the University of Toronto, and the University of Leeds. In 2012, Xiongfeng joined Tsinghua University.