4 November 2010 Evaluating the quantum capacity of bosonic dephasing channel
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Abstract
Phase damping is the main decoherence in the evolution of quantum states. In most of the known quantum computing and quantum information processing, devices have amplitude damping times that are around 1-2 orders of magnitude larger than the corresponding dephasing times. For lossy optical fibre as a quantum channel, the quantum capacity is well known. The channel is degradable. We know that dephasing channel is also degradable, thus it can be anticipate that the channel capacity is available. We calculate the capacity with various methods in this paper.
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Li-zhen Jiang, Xiao-yu Chen, "Evaluating the quantum capacity of bosonic dephasing channel", Proc. SPIE 7846, Quantum and Nonlinear Optics, 784613 (4 November 2010); doi: 10.1117/12.870179; https://doi.org/10.1117/12.870179
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