Entanglement detection: practical protocols and theoretical analysis

Speaker: Xiongfeng Ma

Date:    2022.12.25

Time:    9:30-10:30 am

Venue: The First Floor Meeting Room of Jinchunyuan, Tsinghua University

Tencent Meeting: 337 8937 1456



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.



[YMSC-BIMSA Quantum Information Seminar]