Abstract

In this contribution, we investigate bidirectional quantum teleportation of single-qubit state, for the case in which qubits from the quantum channel of teleportation are distributed by typical correlated noisy channels such as bit-flip, phase-flip, depolarizing, and amplitude damping channels. Expressions of the negativity of the partially transposed density operator, fidelities of teleportation, and quantum Fisher information are evaluated, we found that all these quantities depend on factor noise and the correlation strength of the noisy channel. It is shown that the effect of the noise on entanglement, averaged fidelities of teleportation, and on quantum Fisher information could be noticeably reduced due to the existence of the noise channel correlations.

Graphic abstract

中文翻译：

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相关噪声下的双向隐形传态

摘要

在这个贡献中，我们研究了单量子位状态的双向量子隐形传态，对于来自隐形传态量子通道的量子位由典型的相关噪声通道（如位翻转、相位翻转、去极化和振幅阻尼通道）分布的情况. 评估了部分转置密度算子的负性、隐形传态的保真度和量子 Fisher 信息的表达式，我们发现所有这些量都取决于因子噪声和噪声通道的相关强度。结果表明，由于噪声通道相关性的存在，噪声对纠缠、隐形传态的平均保真度和量子 Fisher 信息的影响可以显着降低。

图形摘要