Degree of Entanglement and Violation of Bell Inequality by Two-Spin-1/2 States

作     者：K.Berrada Y.Hassouni H.Eleuch 

作者机构：Institut fr Angewandte PhysikTechnische Universitt DarmstadtD-64289 DarmstadtGermany Institute for Quantum Studies and Department of Physics Texas UniversityTX 77843USA Laboratoire de Physique Theorique URAC 13Departement de Physique Faculte des SciencesUniversite Mohammed V-Agdal Av.Ibn BattoutaB.P.1014-AgdalRabatMorocco 

出 版 物：《Communications in Theoretical Physics》 (理论物理(英文版))

年 卷 期：2011年第56卷第10期

页      面：679-686页

核心收录：

学科分类：07[理学] 0809[工学-电子科学与技术（可授工学、理学学位）] 070205[理学-凝聚态物理] 08[工学] 0704[理学-天文学] 0702[理学-物理学] 

基　　金：Supported by the National Centre for Scientific and Technical Researcher of Morocco 

主　　题：Bell inequality quantum entanglement coherent states pure and mixed states 

摘      要：Bell inequality is violated by the quantum mechanical predictions made from an entangled state of the composite *** this paper we examine this inequality and entanglement measures in the construction of the coherent states for two-qubit pure and mixed states,we find a link to some entanglement measures through some new parameters(amplitudes of coherent states).Conditions for maximal entanglement and separability are then established for both pure and mixed ***,we analyze and compare the violation of Bell inequality for a class of mixed states with the degree of entanglement by applying the formalism of Horodecki et al.