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Nonclassical Properties of Nonlocal Coherent Photon- Added Two-Mode Circular State

WANG Zhong-Jie, TAI Qi-Jia

Published Jan 1, 2018• 0 citations

Abstract

We investigate theoretically the nonclassical properties, such as cross correlation function and sub- Poisson distribution effect, for the nonlocal coherent photon-added two-mode circular state. The results show the superposition number and excitation number have significant effect on these properties. When the superposition number , the value of cross correlation function decreases monotonously with the increasing of the average photon number of single-mode and the nonlocal coherent photon-added two-mode circular state has the cross correlation effect. Increasing the superposition number , the cross correlation effect will be reduced. When the superposition number , sub-Poissonian distribution effect of the nonlocal coherent two-mode photon-added circular state can be observed only when single-mode average photon number is greater than a certain threshold value.

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The superposition state from the photon-added two-mode squeezed vacum state a+m|ξ〉 is constructed,and its noclassical properties are numerically studied under the principle of superposition in quantum mechanics.The results reveal that under certain conditions,the mean photon number of the superposition state exhibits oscillating phenomenon of collapses and revivals,bot sub-Poissonian photon statistical character and the phase squeezing of the field in the superposition state are stronger than ones in the single photon-added two-mode squeezed vacuum state.

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