中国物理B ›› 2010, Vol. 19 ›› Issue (12): 124203-124203.doi: 10.1088/1674-1056/19/12/124203

• CLASSICAL AREAS OF PHENOMENOLOGY • 上一篇    下一篇

Scheme for direct measurement of Wigner function in two-mode cavity QED driven by classical fields

吴怀志, 杨贞标, 郑仕标   

  1. Department of Physics and State Key Laboratory Breeding Base of Photocatalysis, Fuzhou University, Fuzhou 350002, China
  • 收稿日期:2009-12-30 修回日期:2010-06-01 出版日期:2010-12-15 发布日期:2010-12-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 10974028), the Doctoral Foundation of the Ministry of Education of China (Grant No. 20093514110009), the Natural Science Foundation of Fujian Province of China (Grant No. 2009J06002), and the Funds from the State Key Laboratory Breeding Base of Photocatalysis, Fuzhou University.

Scheme for direct measurement of Wigner function in two-mode cavity QED driven by classical fields

Wu Huai-Zhi(吴怀志)†, Yang Zhen-Biao(杨贞标), and Zheng Shi-Biao(郑仕标)‡   

  1. Department of Physics and State Key Laboratory Breeding Base of Photocatalysis, Fuzhou University, Fuzhou 350002, China
  • Received:2009-12-30 Revised:2010-06-01 Online:2010-12-15 Published:2010-12-15
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 10974028), the Doctoral Foundation of the Ministry of Education of China (Grant No. 20093514110009), the Natural Science Foundation of Fujian Province of China (Grant No. 2009J06002), and the Funds from the State Key Laboratory Breeding Base of Photocatalysis, Fuzhou University.

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摘要： We propose a scheme for the direct measurement of Wigner function in two-mode cavity QED. The atoms are sent to resonantly interact with two orthogonally polarized cavity modes in the presence of strong classical field. The probability of measuring the atom in the ground state directly gives the useful information of the cavity field. This method can be used for quantum non-demolition measurement of the photon number.

Abstract: We propose a scheme for the direct measurement of Wigner function in two-mode cavity QED. The atoms are sent to resonantly interact with two orthogonally polarized cavity modes in the presence of strong classical field. The probability of measuring the atom in the ground state directly gives the useful information of the cavity field. This method can be used for quantum non-demolition measurement of the photon number.

Key words: two-mode cavity, Wigner function, quantum non-demolition measurement

中图分类号:  (Quantum state engineering and measurements)

  • 42.50.Dv
42.50.Gy (Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption) 42.50.Pq (Cavity quantum electrodynamics; micromasers)