Entanglement and disentanglement from cascade beam-splitter for squeezed vacuum state inputs |
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| Authors: | Zhou Qing-Ping Fang Mao-F Liu Xiao-Juan Chen Xiao-Mei Wu Qin and Xu Hong-Zhi |
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| Affiliation: | Department of Physics, Hunan Normal University, Changsha 410081, China; Anhui Institute Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China; Department of Information and Automatization, Jishou University, Zhangjiajie 427000, China |
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| Abstract: | Properties of the entanglement at the outputs of a cascade beam-splitter are investigated for two single-mode squeezed vacuum state inputs. It is shown that the entanglement depends on the squeezing amplitudes of the input states and the reflection coefficients of the cascade beam-splitter, and the composite phase shift Δ between the cascade beam-splitter and the input fields has a great effect on the entanglement. In particular, the properties of the entanglement of a cascade beam-splitter differ from those of only one beam-splitter. A further method for manipulating entanglement by adjusting the parameters of the cascade beam-splitter and the input fields is proposed. |
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| Keywords: | entanglement disentanglement cascade beam-splitter squeezed vacuum states |
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