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Entropy variances of pure coherent states in the diffusion channel |
| Wei-Feng Wu(吴卫锋)1,2,†, Yong Fang(方勇)1, and Peng Fu(付鹏)1 |
1 School of Mechanical and Electrical Engineering, Chizhou University, Chizhou 247000, China;
2 Anhui Research Center of Semiconductor Industry Generic Technology, Chizhou 247000, China |
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Abstract Using the operator correspondence of the real and fictious modes in the thermo entangled state representation, we solve the quantum master equation describing the diffusion channel and obtain the Kraus operator-sum representation of its analytical solution. we find that the pure coherent states evolve into the new mixed thermal superposed states in the diffusion channel. Also, we investigate the statistical properties of the initial coherent states and their entropy evolutions in the diffusion channel, and find that the entropy evolutions are only related to the decay time and without the amplitudes of the initial coherent states.
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Received: 25 May 2024
Revised: 24 June 2024
Accepted manuscript online: 02 July 2024
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PACS:
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42.50.-p
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(Quantum optics)
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03.65.-w
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(Quantum mechanics)
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05.30.-d
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(Quantum statistical mechanics)
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| Fund: Project supported by Collaborative Innovation Project of University, Anhui Province (Grant No. GXXT-2022-088). |
Corresponding Authors:
Wei-Feng Wu
E-mail: wfwu@mail.ustc.edu.cn
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Cite this article:
Wei-Feng Wu(吴卫锋), Yong Fang(方勇), and Peng Fu(付鹏) Entropy variances of pure coherent states in the diffusion channel 2024 Chin. Phys. B 33 094202
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