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arXiv · 2012.11219

On the non-Markovianity of quantum semi-Markov processes

Shrikant Utagi·Subhashish Banerjee·R. Srikanth
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Abstract

The non-Markovianity of the stochastic process called the quantum semi-Markov (QSM) process is studied using a recently proposed quantification of memory based on the deviation from semigroup evolution, that provides a unified description of divisible and indivisible channels. This is shown to bring out the property of QSM processes to exhibit memory effects even in the CP-divisible regime, in agreement with an earlier result. An operational meaning to the non-Markovian nature of semi-Markov processes is also provided.

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Shrikant Utagi, Subhashish Banerjee, R. Srikanth. 2022-02-04. On the non-Markovianity of quantum semi-Markov processes. https://doi.org/10.1007/s11128-021-03302-x

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