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arXiv · 1905.12872

A study of coherence based measure of quantumness in (non) Markovian channels

Javid Naikoo·Subhashish Banerjee
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Abstract

We make a detailed analysis of quantumness for various quantum noise channels, both Markovian and non-Markovian. The noise channels considered include dephasing channels like random telegraph noise, non-Markovian dephasing and phase damping, as well as the non-dephasing channels such as generalized amplitude damping and Unruh channels. We make use of a recently introduced witness for quantumness based on the square $l_1$ norm of coherence. It is found that the increase in the degree of non-Markovianity increases the quantumness of the channel.

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Javid Naikoo, Subhashish Banerjee. 2019-05-30. A study of coherence based measure of quantumness in (non) Markovian channels. https://doi.org/10.1007/s11128-019-2533-x

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