摘要
Entanglement charge is an operational measure to quantify nonlocalities in ensembles consisting of bipartite quantum states.Here we generalize this nonlocality measure to single bipartite quantum states.As an example,we analyze the entanglement charges of some thermal states of two-qubit systems and show how they depend on the temperature and the system parameters in an analytical way.
Entanglement charge is an operational measure to quantify nonlocalities in ensembles consisting of bipartite quantum states. Here we generalize this nonlocality measure to single bipartite quantum states. As an example, we analyze the entanglement charges of some thermal states of two-qubit systems and show how they depend on the temperature and the system parameters in an analytical way,
基金
supported by the National Natural Science Foundation of China (Grant Nos. 60878059,11004033 and 10905016)
the Natural Science Foundation of Fujian Province (Grant No. 2010J01002)
the Fundof Hebei Normal University,the RGC Grant of Hong Kong (Grant Nos.HKU7044/08P and HKU7058/11P)
the State Key Program for Basic Research of China (Grant No. 2011CB922104)
the National Fundamental Research Program of China (Grant No. 2011CBA00203)
