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Open Quantum Systems Decoherence

Quantifying non-Markovianity due to driving and a finite-size environment in an open quantum system

arXiv

Authors: Rui Sampaio, Samu Suomela, Rebecca Schmidt, Tapio Ala-Nissila

Year

2016

Paper ID

41975

Status

Preprint

Abstract Read

~2 min

Abstract Words

122

Citations

N/A

Abstract

We study non-Markovian effects present in a driven qubit coupled to a finite environment using a recently proposed model developed in the context of calorimetric measurements of open quantum systems. To quantify the degree of non-Markovianity we use the Breuer-Laine-Piilo (BLP) measure \[Breuer et al., Phys. Rev. Lett. 103, 210401 (2009)\]. We show that information backflow only occurs in the case of driving in which case we investigate the dependence of memory effects on the environment size, driving amplitude and coupling to the environment. We show that the degree of non-Markovianity strongly depends on the ratio between the driving amplitude and the coupling strength. We also show that the degree of non-Markovianity does not decrease monotonically as a function of the environment size.

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We study non-Markovian effects present in a driven qubit coupled to a finite environment using a recently proposed model developed in the context of calorimetric measurements...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1612.02292 [2] arXiv https://arxiv.org/abs/1612.02292 [3] Publisher https://arxiv.org/abs/1612.02292

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