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

Rui Ferreira Sampaio, Samu Suomela, Rebecca Schmidt, Tapio Ala-Nissilä

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

12 Sitaatiot (Scopus)
294 Lataukset (Pure)

Abstrakti

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 [H.-P. Breuer, 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.

AlkuperäiskieliEnglanti
Artikkeli022120
Sivut1-7
Sivumäärä7
JulkaisuPhysical Review A
Vuosikerta95
Numero2
DOI - pysyväislinkit
TilaJulkaistu - 21 helmikuuta 2017
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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