Ban [Opt, Commun. 143 (1997) 225] demonstrated an equivalence between a lossless beam splitter with one of the output modes in the vacuum state and a nondegenerate parametric amplifier with a vacuum input. We show that this equivalence can be extended to apply to all states. (C) 1999 Elsevier Science B.V. All rights reserved.
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HuaiNan Normal Univ, Sch Elect Engn, Huainan 232001, Anhui, Peoples R ChinaHuaiNan Normal Univ, Sch Elect Engn, Huainan 232001, Anhui, Peoples R China
Ren, Gang
Zhang, Chun-zao
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HuaiNan Normal Univ, Sch Elect Engn, Huainan 232001, Anhui, Peoples R ChinaHuaiNan Normal Univ, Sch Elect Engn, Huainan 232001, Anhui, Peoples R China
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Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Shanghai 201800, Peoples R ChinaChinese Acad Sci, Shanghai Inst Opt & Fine Mech, Shanghai 201800, Peoples R China
Li, Yanyan
Huang, Yansui
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Wang, Jianzhou
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Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Shanghai 201800, Peoples R ChinaChinese Acad Sci, Shanghai Inst Opt & Fine Mech, Shanghai 201800, Peoples R China
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Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Shanghai 201800, Peoples R ChinaChinese Acad Sci, Shanghai Inst Opt & Fine Mech, Shanghai 201800, Peoples R China
Xu, Yi
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Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Shanghai 201800, Peoples R ChinaChinese Acad Sci, Shanghai Inst Opt & Fine Mech, Shanghai 201800, Peoples R China
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