Testing Quantum Entanglement with Local Measurement
XIE Qing1,2, WU Xian-Xin2, DING Xiang-Mao3, YANG Wen-Li4, YUE Rui-Hong1, FAN Heng2**
1Faculty of Science, Ningbo University, Ningbo 315211 2Institute of Physics, Chinese Academy of Sciences, Beijing 100190 3Institute of Applied Mathematics, Academy of Mathematics and System Science, Chinese Academy of Sciences, Beijing 100190 4Institute of Modern Physics, Northwest University, Xi'an 710069
Testing Quantum Entanglement with Local Measurement
XIE Qing1,2, WU Xian-Xin2, DING Xiang-Mao3, YANG Wen-Li4, YUE Rui-Hong1, FAN Heng2**
1Faculty of Science, Ningbo University, Ningbo 315211 2Institute of Physics, Chinese Academy of Sciences, Beijing 100190 3Institute of Applied Mathematics, Academy of Mathematics and System Science, Chinese Academy of Sciences, Beijing 100190 4Institute of Modern Physics, Northwest University, Xi'an 710069
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 necessary condition for the violation of some generalized Bell inequalities.
Abstract：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 necessary condition for the violation of some generalized Bell inequalities.
2012, Vol. 29 
