Entanglement COncentration of Entangled Squeezed Vacuum States |
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作者姓名: | 蔡新华 匡乐满 |
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作者单位: | [1]DepartmentofPhysics,ChangdeNormalUniversity,Changde415000 [2]DepartmentofPhysics,HunanNormalUniversity,Changsha410081 |
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摘 要: | By analysing the action of a beamsplitter on squeezed vacuum states(SVSs),it is found that,if the two input light beams of the beamsplitter have the same squeezing amplitude and phase,the output state is a two-mode SVS,If the two input light beams of the beamsplitter have the same squeezing amplitude but a phase difference of π,the output state is a direct porduct state of two single-mode SVS.Based on these results,we propose to distill a maximally entangled SVS from a partially entangled SVS by using a 50/50 beamsplitter and photodetectors.
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关 键 词: | 量子力学 量子纠缠 纠缠挤压真空态 |
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