中国物理B ›› 1999, Vol. 8 ›› Issue (6): 437-442.doi: 10.1088/1004-423X/8/6/007

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INTERFEROMETRIC DETECTION OF OPTICAL PHASE SHIFT USING TWIN BEAMS

张俊香, 张天才, 谢常德, 彭堃墀   

  1. Institute of Optoelectronics, Shanxi University, Taiyuan 030006, China
  • 收稿日期:1998-07-03 修回日期:1999-01-07 出版日期:1999-06-15 发布日期:1999-06-20
  • 基金资助:
    Project supported in part by the National Natural Science Foundation of China (Grant No. 69837010), the Excellent Young Teacher Foundation from National Education Department and the Young Academic Leader Foundation of Shanxi Province, China.

INTERFEROMETRIC DETECTION OF OPTICAL PHASE SHIFT USING TWIN BEAMS

Zhang Jun-xiang (张俊香), Zhang Tian-cai (张天才), Xie Chang-de (谢常德), Peng Kun-chi (彭堃墀)   

  1. Institute of Optoelectronics, Shanxi University, Taiyuan 030006, China
  • Received:1998-07-03 Revised:1999-01-07 Online:1999-06-15 Published:1999-06-20
  • Supported by:
    Project supported in part by the National Natural Science Foundation of China (Grant No. 69837010), the Excellent Young Teacher Foundation from National Education Department and the Young Academic Leader Foundation of Shanxi Province, China.

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摘要： An interferometric detection scheme to measure optical phase shift with sensi tivity beyond the shot noise limit is proposed. The theoretical calculation shows that using the quantum correlated twin beams produced from an optical parametric amplifier as the input fields of a Mach-Zehnder interferometer, the minimum detectable phase shift will exceed the shot noise limit N-1/2 and approach the Heisenberg limit N-1. The parametric dependences of the minimum detectable phase shift on the nonlinear interaction, input photon number, and detection efficiency are shown.

Abstract: An interferometric detection scheme to measure optical phase shift with sensi tivity beyond the shot noise limit is proposed. The theoretical calculation shows that using the quantum correlated twin beams produced from an optical parametric amplifier as the input fields of a Mach-Zehnder interferometer, the minimum detectable phase shift will exceed the shot noise limit N-1/2 and approach the Heisenberg limit N-1. The parametric dependences of the minimum detectable phase shift on the nonlinear interaction, input photon number, and detection efficiency are shown.

中图分类号:  (Optical parametric oscillators and amplifiers)

  • 42.65.Yj
07.60.Ly (Interferometers) 42.50.-p (Quantum optics)