Chin. Phys. Lett.  2002, Vol. 19 Issue (10): 1407-1409    DOI:
Original Articles |
Entanglement Concentration of Entangled Squeezed Vacuum States
CAI Xin-Hua1,2;KUANG Le-Man2
1Department of Physics, Changde Normal University, Changde 415000 2Department of Physics, Hunan Normal University, Changsha 410081
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CAI Xin-Hua, KUANG Le-Man 2002 Chin. Phys. Lett. 19 1407-1409
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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.
Keywords: 03.67.Hk      03.67.-a      03.65.Bz     
Published: 01 October 2002
PACS:  03.67.Hk (Quantum communication)  
  03.67.-a (Quantum information)  
  03.65.Bz  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2002/V19/I10/01407
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