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Dense coding capacity in correlated noisy channels with weak measurement |
| Jin-Kai Li(李进开), Kai Xu(徐凯), and Guo-Feng Zhang(张国锋)† |
| School of Physics, Beihang University, Beijing 100191, China |
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Abstract Capacity of dense coding via correlated noisy channel is greater than that via uncorrelated noisy channel. It is shown that the weak measurement and reversal measurement need to further improve their quantum dense coding capacity in correlated amplitude damping channel, but this improvement is very small in correlated phase damping channel and correlated depolarizing channel.
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Received: 22 February 2021
Revised: 19 March 2021
Accepted manuscript online: 30 March 2021
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PACS:
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03.65.Ud
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(Entanglement and quantum nonlocality)
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03.67.Hk
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(Quantum communication)
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05.40.Ca
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(Noise)
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89.70.Kn
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(Channel capacity and error-correcting codes)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant No. 12074027). |
Corresponding Authors:
Guo-Feng Zhang
E-mail: gf1978zhang@buaa.edu.cn
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Cite this article:
Jin-Kai Li(李进开), Kai Xu(徐凯), and Guo-Feng Zhang(张国锋) Dense coding capacity in correlated noisy channels with weak measurement 2021 Chin. Phys. B 30 110302
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