中国物理B ›› 2006, Vol. 15 ›› Issue (1): 235-241.doi: 10.1088/1009-1963/15/1/040

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Single-mode quadrature-amplitude measurement for generalized two-mode squeezed states studied by virtue of the entangled state representation

许雪芬   

  1. Department of Basic Courses, Jiangsu Teachers University of Technology, Changzhou 213001, China
  • 收稿日期:2005-08-08 修回日期:2005-08-24 出版日期:2006-01-20 发布日期:2006-01-20

Single-mode quadrature-amplitude measurement for generalized two-mode squeezed states studied by virtue of the entangled state representation

Xu Xue-Fen (许雪芬)   

  1. Department of Basic Courses, Jiangsu Teachers University of Technology, Changzhou 213001, China
  • Received:2005-08-08 Revised:2005-08-24 Online:2006-01-20 Published:2006-01-20

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摘要： The result of one-mode quadrature-amplitude measurement for some generalized two-mode squeezed states has been studied by virtue of the entangled state representation of the corresponding two-mode squeezing operators. We find that the remaining field-mode simultaneously collapses to the single-mode squeezed state with more stronger squeezing. The measurement result caused by a single-mode squeezed state projector is also calculated, which indicates quantum entanglement in squeezing.

Abstract: The result of one-mode quadrature-amplitude measurement for some generalized two-mode squeezed states has been studied by virtue of the entangled state representation of the corresponding two-mode squeezing operators. We find that the remaining field-mode simultaneously collapses to the single-mode squeezed state with more stronger squeezing. The measurement result caused by a single-mode squeezed state projector is also calculated, which indicates quantum entanglement in squeezing.

Key words: entangled state representation, quadrature-amplitude measurement, two-mode squeezed states

中图分类号:  (Foundations of quantum mechanics; measurement theory)

  • 03.65.Ta
03.65.Ud (Entanglement and quantum nonlocality)