中国物理B ›› 2003, Vol. 12 ›› Issue (1): 51-54.doi: 10.1088/1009-1963/12/1/309

• CLASSICAL AREAS OF PHENOMENOLOGY • 上一篇    下一篇

Quantum nondemolition measurement of photon-number distribution for a weak cavity field with resonant atoms

郑仕标   

  1. Department of Electronic Science and Applied Physics,Fuzhou University,Fuzhou 350002, China
  • 收稿日期:2002-07-01 修回日期:2002-08-16 出版日期:2003-01-20 发布日期:2003-01-20
  • 基金资助:
    Project supported by the Fok Ying Tung Education Foundation, China, the National Natural Science Foundation of China (Grant No 60008003), the Natural Science Foundation of Fujian Province, China (Grant Nos K20004 and F0110027), and the Funds from Fuzhou University, China

Quantum nondemolition measurement of photon-number distribution for a weak cavity field with resonant atoms

Zheng Shi-Biao (郑仕标)   

  1. Department of Electronic Science and Applied Physics,Fuzhou University,Fuzhou 350002, China
  • Received:2002-07-01 Revised:2002-08-16 Online:2003-01-20 Published:2003-01-20
  • Supported by:
    Project supported by the Fok Ying Tung Education Foundation, China, the National Natural Science Foundation of China (Grant No 60008003), the Natural Science Foundation of Fujian Province, China (Grant Nos K20004 and F0110027), and the Funds from Fuzhou University, China

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摘要： We propose a quantum nondemolition measurement of the photon-number distribution for a weak cavity field with no more than two photons. The scheme is based on the resonant interaction of atoms with the cavity field, and thus the required interaction time is much shorter than that using dispersive interaction. This is important in view of decoherence. Our scheme can also be used to generate even and odd coherent states for a weak cavity field with resonant atoms.

Abstract: We propose a quantum nondemolition measurement of the photon-number distribution for a weak cavity field with no more than two photons. The scheme is based on the resonant interaction of atoms with the cavity field, and thus the required interaction time is much shorter than that using dispersive interaction. This is important in view of decoherence. Our scheme can also be used to generate even and odd coherent states for a weak cavity field with resonant atoms.

Key words: quantum nondemolition measurement, photon-number distribution, resonant atom

中图分类号: 

  • 42.50.Ar
32.80.-t (Photoionization and excitation)