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Coherence-based measure of quantumness in (non-) Markovian channels
Published in Springer
Volume: 19
Issue: 1
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 l1 norm of coherence. It is found that the increase in the degree of non-Markovianity increases the quantumness of the channel. This may be attributed to the fact that the non-Markovian dynamics involves the generation of entanglement between the system and environment degrees of freedom. © 2019, Springer Science+Business Media, LLC, part of Springer Nature.
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Open AccessNo