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Paper 1
Asymmetric Entanglement-Assisted Quantum MDS Codes Constructed from Constacyclic Codes.
Chen J, Fang W, Zhou S, Qiu J, Zhang C, Xu Y, Zeng B, Chen Y.
- Year
- 2023
- Journal
- Entropy (Basel)
- DOI
- 10.3390/e25121603
- arXiv
- -
No abstract.
Open paperPaper 2
M Times Photon Subtraction-Addition Coherent Superposition Operated Odd-Schrődinger-cat State: Nonclassicality and Decoherence
Li Huang, Qin Guo, Li-ying Jiang, Ge Chen, Xue-xiang Xu, Wen Yuan
- Year
- 2014
- Journal
- arXiv preprint
- DOI
- arXiv:1407.7104
- arXiv
- 1407.7104
We introduce a new non-Gaussian state, generated by m times coherent superposition operation $a\cos θ+a^{\dagger }e^{i\varphi }\sin θ$ (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 (|$α_{0}$|). Especially the volume of negative region of WF increases with the increment of parameters m, $θ$ and $α_{0}$. 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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