Towards Quantum Network with Cold Atoms

Xiao-Hui Bao, University of Science and Technology of China 10:00-11:00am, Tuesday, May 21, 2019 Room 264, Geography Building, Zhongbei Campus, ECNU (华东师范大学中山北路校区，地理楼 264 室) Guoxiang Huang, East China Normal University

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Abstract:

Quantum internet will enable a number of revolutionary applications, such as distributed quantum computing, large scale quantum communication and cooperative operation of atomic clocks. Cold atomic ensembles are a very promising approach for quantum internet, featuring long coherence time and collectively enhanced interaction with single photons. The current central theme in this direction is to improve the performance of fundamental building blocks and to construct small-scale networks which go beyond state of the art. In this talk, I will present our experimental works in this direction, including the generation of bright atom-photon entanglement with cavity enhancement, extension of atom-atom entanglement distance via quantum frequency conversion, and the establishment of entanglement among three quantum nodes via three-photon interference etc.

Biography:

Dr. Bao got his Bachelor degree from Department of Modern Physics (University of Science and Technology of China) in 2004. He obtained his PhD degree from Department of Physics and Astronomy (University of Heidelberg) in 2010. During 2010 to 2013, he performed postdoctoral research in the Physics Institute in University of Heidelberg. In 2013 he was selected by the Recruitment Program of Global Experts of China as a member of the “Youth Thousand Talent Plan” and then appointed as a professor in University of Science and Technology of China. Dr. Bao performs experimental research in the area of quantum repeater and quantum networks. In his research, laser-cooled atomic ensembles are employed as stationary quantum memories, and photons are employed as flying qubits, which in together provides a promising solution for scalable quantum communication over ultra-long distance and over large number of quantum nodes.

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