2018年4月24日学术报告（Zhaofeng Su，University of Sydney）
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报告题目：  Efficient quantum repeaters
报告时间：  2018年4月24日上午10:30（周二）
报告地点：  计算机学院B404
报告人：    Zhaofeng Su  research associate
报告人国籍：中国
报告人单位：University of Sydney
 
报告摘要: Quantum entanglement is an indispensable resource for many significant quantum information processing tasks. However, it is difficult to distribute quantum entanglement over a long distance in practice. A solution to this challenge is applying the scheme of quantum repeaters. In the reported literatures, the local operation and classical communication (LOCC) is considered as a free resource. However, the consumption of LOCC takes an important place with respect to time efficiency.
Motivated by this observation, we consider a basic quantum repeater scheme that focuses on not only the optimal rate of entanglement-concentration but also the complexity of LOCC. First, we consider the case where two different two-qubit pure states are initially distributed in the scenario. We construct a protocol with the optimal entanglement-concentration rate and less consumption of local operations and classical communication. Second, we consider the case in which two general pure states are prepared and general measurements are allowed. We get an upper bound on the probability for a successful measurement operation to produce a maximally entangled state without any further local operations.
个人简介: Zhaofeng Su currently works at University of Sydney as a research associate. He received a Bachelor of Engineering in Software Engineering from Wuhan University in 2012. He pursues PhD at University of Technology Sydney in 2018 which is jointly supported by State Scholarship of China and International Research Scholarship of Australian. His research interest is quantum computation and quantum information which includes quantum nonlocality, quantum entanglement, quantum repeaters and quantum artificial intelligence. As the first and corresponding author, he has produced four JCR ranked II journal papers. He also severed as referee for the journal of Quantum Information Processing. 
 
邀请人：杜博教授
上一篇：4月22日交叉学科论坛学术报告（曹沁 香港中文大学，邹斌 香港城市大学）
下一篇：2018年5月2日学术报告（DeLiang Wang，美国俄亥俄州立大学）