Testing Quantum Entanglement with Local Measurement  

作　　者：XIE Qing WU Xian-Xin DING Xiang-Mao YANG Wen-Li YUE Rui-Hong FAN Heng 谢庆;吴贤新;丁祥茂;杨文力;岳瑞宏;范桁(Faculty of Science,Ningbo University,Ningbo 315211;Institute of Physics,Chinese Academy of Sciences,Beijing 100190;Institute of Applied Mathematics,Academy of Mathematics and System Science,Chinese Academy of Sciences,Beijing 100190;Institute of Modern Physics,Northwest University,Xi’an 710069)

机构地区：[1]Faculty of Science,Ningbo University,Ningbo 315211 [2]Institute of Physics,Chinese Academy of Sciences,Beijing 100190 [3]Institute of Applied Mathematics,Academy of Mathematics and System Science,Chinese Academy of Sciences,Beijing 100190 [4]Institute of Modern Physics,Northwest University,Xi’an 710069

出　　处：《Chinese Physics Letters》2012年第7期21-24,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 10931006,10975180,10974247 and 11075126;the National Basic Research Program of China under Grant No 2010CB922904.

摘　　要：We propose to detect quantum entanglement by a condition of local measurements.We find that this condition can efficiently detect the pure entangled states for both discrete and continuous variable systems.It does not depend on interference of decoherence from noise and detection loss in some systems,which allows a loophole-free test in real experiments.In particular,it is a necesary condition for the violation of some generalized Bell inequalities.

关 键 词：CONDITION QUANTUM PURE 

分 类 号：O41[理学—理论物理]