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Quantumness of channels
Quantum Information Processing ( IF 2.5 ) Pub Date : 2021-01-12 , DOI: 10.1007/s11128-020-02958-1
Javid Naikoo , Subhashish Banerjee , R. Srikanth

The reliability of quantum channels for transmitting information is of profound importance from the perspective of quantum information. This naturally leads to the question as how well a quantum state is preserved when subjected to a quantum channel. We propose a measure of quantumness of channels based on non-commutativity of quantum states that is intuitive and easy to compute. We apply the proposed measure to some well-known noise channels, both Markovian and non-Markovian, and find that the results are in good agreement with those from a recently introduced \(l_1\)-norm coherence based measure.



中文翻译:

通道量子

从量子信息的角度来看,用于传输信息的量子通道的可靠性具有极其重要的意义。这自然引起了这样一个问题,即当经受量子通道时,量子态的保留程度如何。我们提出了一种基于量子态的非可交换性的信道量子度量,该度量是直观且易于计算的。我们将拟议的措施应用于一些著名的噪声信道(马尔可夫和非马尔可夫信道),并发现结果与最近基于\(l_1 \)- norm相干性度量的结果吻合良好。

更新日期:2021-01-12
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