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Wigner functions of multiple-photon excited coherent states

Lan Hai-Jiang Pang Hua-Feng Wei Lian-Fu

Wigner functions of multiple-photon excited coherent states

Lan Hai-Jiang, Pang Hua-Feng, Wei Lian-Fu
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  • Received Date:  23 December 2008
  • Accepted Date:  08 March 2009
  • Published Online:  20 December 2009

Wigner functions of multiple-photon excited coherent states

  • 1. (1)柳州师范高等专科学校物理与信息科学系,柳州 545003;西南交通大学量子光电信息实验室,成都 610031; (2)西南交通大学量子光电信息实验室,成都 610031

Abstract: Wigner functions in phase space are reconstructed for the excited coherent states,which are generated by applying the inverse of k-Boson operators repeatedly to the coherent states. The non-classicality of these states is discussed by calculating their Wigner functions in Fock-state space. Numerical results show that these excited coherent states always reveal non-classical characteristics,no matter whether the excited number k is even or odd,and also the corresponding non-classicality is more obvious with the number k increasing.

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