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Non-Gaussianity and decoherence of generalized photon-added coherent state as a Hermite-excited coherent state

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【作者】 李恒梅许雪芬

【Author】 Li Heng-Mei a) and Xu Xue-Fen b) a) School of Science,Changzhou Institute of Technology,Changzhou 213002,China b) School of Mathematics and Physics,Jiangsu Teachers University of Technology,Changzhou 213001,China

【机构】 School of Science,Changzhou Institute of TechnologySchool of Mathematics and Physics,Jiangsu Teachers University of Technology

【摘要】 Generalized photon-added coherent state (GPACS) is obtained by repeatedly acting the combination of Bose creation and annihilation operations on the coherent state.It is found that GPACS can be regarded as a Hermiteexcited coherent state due to its normalization factor related to a Hermite polynomial.In addition,we adopt the Hilbert-Schmidt distance to quantify the non-Gaussian character of GPACS and discuss the decoherence of GPACS in dissipative channel by studying the loss of nonclassicality in reference of the negativity of Wigner function.

【Abstract】 Generalized photon-added coherent state (GPACS) is obtained by repeatedly acting the combination of Bose creation and annihilation operations on the coherent state.It is found that GPACS can be regarded as a Hermiteexcited coherent state due to its normalization factor related to a Hermite polynomial.In addition,we adopt the Hilbert-Schmidt distance to quantify the non-Gaussian character of GPACS and discuss the decoherence of GPACS in dissipative channel by studying the loss of nonclassicality in reference of the negativity of Wigner function.

【基金】 supported by the National Natural Science Foundation of China (Grant No.11174114);the Research Foundation of Changzhou Institute of Technology,China (Grant No.YN1007)
  • 【文献出处】 Chinese Physics B ,中国物理B , 编辑部邮箱 ,2012年02期
  • 【分类号】O431.2
  • 【下载频次】15
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