مشخصات پژوهش

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.