D-Concurrence Bounds for Pair Coherent States |
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Authors: | S Salimi A Mohammadzade |
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Institution: | (1) Information Sciences, Tokyo University of Science, Yamazaki 2641, 278-8510 Noda, Japan;(2) Mathematical Physics, Steklov Mathematical Institute, Gubkin St 8, 119991 Moscow, Russia; |
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Abstract: | Pair coherent state can be regarded as a state of a two-mode radiation field such that the wave function is non-Gaussian and
infinite dimensional, too. Since the entanglement for high dimensional mixed states is difficult to calculate, it is necessary
to find bound for entanglement measures. In this paper, some features of quantum entanglement for the pair coherent state
are studied and also the upper and lower bounds for D-concurrence (a new entanglement measure) over this state are obtained. |
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