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学术报告


6月26日程书明报告

发布时间:2018-06-21

报告时间:6月26日 周二  下午3:00

报告地实验室一楼会议室

报告人:程书明 博士 (澳大利亚 Griffith大学)

报告题目: Tradeoffs in Quantum Steering

报告摘要: Quantum steering was introduced by Schrodinger, in response to the famous paradox raised by Einstein, Podolsky, and Rosen (EPR) in 1935. It describes the conditioning effect between two parties, Alice and Bob say, that Bob's system could be remotely prepared into different states by different choices of Alice's measurements when they share a pure bipartite non-product state. In this talk, I will talk about the quantum steering for two-qubit states and beyond qubits. In particular, the following issues are examined: 

    1) Which states Bob's qubit can be steered to by Alice's qubit (qudit)?

    2) What is the connection between this set of steered states and the degree of quantum correlation? 

    3) Which convex decomposition of Bob's local state can be steered to by Alice's qubit (qudit)? 

    4) And for a multi-party state, are there restrictions on the degree to which one party can steer the systems of all other parties?

I will mainly use the quantum steering ellipsoid to tackle these problems and report monogamy relations of quantum steering ellipsoids for qubits systems and beyond qubits.