Entanglement Concentration of Entangled Squeezed Vacuum States
CAI Xin-Hua1,2 , KUANG Le-Man2
1 Department of Physics, Changde Normal University,
Changde 415000
2 Department of Physics, Hunan Normal University, Changsha 410081
Entanglement Concentration of Entangled Squeezed Vacuum States
CAI Xin-Hua1,2 ;KUANG Le-Man2
1 Department of Physics, Changde Normal University,
Changde 415000
2 Department of Physics, Hunan Normal University, Changsha 410081
关键词 ：
03.67.Hk ,
03.67.-a ,
03.65.Bz
Abstract ： 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 beam splitter have the same squeezing amplitude but a phase difference of π, the output state is a direct product state of two single-mode SVSs. Based on these results, we propose to distill maximally entangled SVS from partially entangled SVS via using 50/50 beam splitter and photodetectors.
Key words ：
03.67.Hk
03.67.-a
03.65.Bz
出版日期: 2002-10-01
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2002, Vol. 19 
