Study of Concurrence and D-Concurrence on Two-Qubits Resulted in Pair Coherent States in Language of SU(2) Coherent States  

作　　者：S.Salimi A.Mohammadzade 

机构地区：[1]Department of Physics,University of Kurdistan

出　　处：《Communications in Theoretical Physics》2011年第8期241-246,共6页理论物理通讯（英文版）

摘　　要：Pair coherent state, is a state of a two-mode radiation field that is known as a state with non-gaussian wave function. In this paper, study on the pair coherent state, we notice that with superposition of two first terms of this states, one two-qubits formed. Because of the importance of two-qubits in theory of quantum entanglement, with two different measures with the title of concurrence and D-concurrence, we have studied the amount of entanglement and discussed its details. At the end, we describe these measures for pair coherent states as a function of the amplitude of the SU（2） coherent states.

关 键 词：ENTANGLEMENT pair coherent states CONCURRENCE 

分 类 号：O413.1[理学—理论物理]