Quantum correlations in a chain-type quantum network  

作　　者：Xiaofei Qi Aihong Zhai Lihua Yang 

机构地区：[1]School of Mathematical Science,Shanxi University,Taiyuan 030006,China [2]Key Laboratory of Complex Systems and Data Science of Ministry of Education,Shanxi University,Taiyuan 030006,China [3]School of Mathematics and Information Technology,Yuncheng University,Yuncheng 044000,China

出　　处：《Communications in Theoretical Physics》2024年第6期77-91,共15页理论物理通讯（英文版）

基　　金：supported by the National Natural Science Foundation of China(12171290,12071336);the Fundamental Research Program of Shanxi Province(202303021222242).

摘　　要：A quantum network concerns several independent entangled resources and can create strong quantum correlations by performing joint measurements on some observers.In this paper,we discuss an n-partite chain network with each of two neighboring observers sharing an arbitrary Bell state and all intermediate observers performing some positive-operator-valued measurements with parameterλ.The expressions of all post-measurement states between any two observers are obtained,and their quantifications of Bell nonlocality,Einstein-Podolsky-Rosen steering and entanglement with different ranges ofλare respectively detected and analyzed.

关 键 词：quantum correlation NONLOCALITY ENTANGLEMENT chain-type quantum network 

分 类 号：O413[理学—理论物理]