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M Times Photon Subtraction-Addition Coherent Superposition Operated Odd-Schrődinger-cat State: Nonclassicality and Decoherence

arXiv

Authors: Li Huang, Qin Guo, Li-ying Jiang, Ge Chen, Xue-xiang Xu, Wen Yuan

Year

2014

Paper ID

48403

Status

Preprint

Abstract Read

~2 min

Abstract Words

128

Citations

N/A

Abstract

We introduce a new non-Gaussian state, generated by m times coherent superposition operation acos θ+a^daggere^ivarphisin θ (MCSO) on odd-Schrodinger-cat state (OSCS). Its normalized constant is turned out to be related with the Hermite polynomial. We further investigate the nonclassical properties of the MCSO-OSCS through Mandel's Q-parameter, quadrature squeezing, the photocount distribution and Wigner function (WF). It is shown that the nonclassicality of the MCSO-OSCS is influenced by the number of times (m) of coherent superpositon operation, the angle θ and the amplitude of the coherent state |$α₀$|. Especially the volume of negative region of WF increases with the increment of parameters m, θ and α₀. We also investigate the decoherence of the MCSO-OSCS in terms of the fadeaway of the negativity of WF in a thermal environment.

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This paper contributes to the Entanglement Theory & Quantum Correlations research area in the Quantum Articles archive.
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We introduce a new non-Gaussian state, generated by m times coherent superposition operation acos θ+a^dagger e^ivarphi sin θ (MCSO) on odd-Schrodinger-cat state (OSCS).

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1407.7104 [2] arXiv https://arxiv.org/abs/1407.7104 [3] Publisher https://arxiv.org/abs/1407.7104

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