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Open Quantum Systems Decoherence

On the universal constraints for relaxation rates for quantum dynamical semigroup

arXiv
Authors: Dariusz Chruscinski, Gen Kimura, Andrzej Kossakowski, Yasuhito Shishido

Year

2020

Paper ID

19140

Status

Preprint

Abstract Read

~2 min

Abstract Words

85

Citations

N/A

Abstract

A conjecture for the universal constraints for relaxation rates of a quantum dynamical semigroup is proposed. It is shown that it holds for several interesting classes of semigroups, e.g. unital semigroups and semigroups derived in the weak coupling limit from the proper microscopic model. Moreover, proposed conjecture is supported by numerical analysis. This conjecture has several important implications: it allows to provide universal constraints for spectra of quantum channels and provides necessary condition to decide whether a given channel is consistent with Markovian evolution.

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  • This paper contributes to the Open Quantum Systems & Decoherence research area in the Quantum Articles archive.
  • It adds a 2020 reference point for readers tracking recent quantum research.
  • A conjecture for the universal constraints for relaxation rates of a quantum dynamical semigroup is proposed.

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