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arXiv · 1505.05810

Delineating incoherent non-Markovian dynamics using quantum coherence

Titas Chanda·Samyadeb Bhattacharya
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Abstract

We introduce a method of characterization of non-Markovianity using coherence of a system interacting with the environment. We show that under the allowed incoherent operations, monotonicity of a valid coherence measure is affected due to non-Markovian features of the system-environment evolution. We also define a measure to quantify non-Markovianity of the underlying dynamics based on the non-monotonic behavior of the coherence measure. We investigate our proposed non-Markovianity marker in the behavior of dephasing and dissipative dynamics for one and two qubit cases. We also show that our proposed measure captures the back-flow of information from the environment to the system and compatible with well known distinguishability criteria of non-Markovianity.

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Titas Chanda, Samyadeb Bhattacharya. 2015-05-21. Delineating incoherent non-Markovian dynamics using quantum coherence. https://doi.org/10.1016/j.aop.2016.01.004

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