Eur. Phys. J. D (2014) 68: 278
https://doi.org/10.1140/epjd/e2014-50292-2

Regular Article

Coherence, correlation and non-Markovianity in qubit systems

Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, and Department of Physics, Hunan Normal University, Changsha 410081, P.R. China

^a e-mail: hszeng@hunnu.edu.cn

Received: 10 April 2014
Received in final form: 11 April 2014
Published online: 1 October 2014

Abstract

By means of recently presented two typical measures of non-Markovianity, we study the non-Markovian dynamics of a qubit system coupled to a single qubit environment. Special attention is paid to the problem of environmental coherence on the effect of non-Markovianity of system dynamics and on the effect of entanglement evolution. We also study the relation between non-Markovianity and system-environment correlations and the time evolution of coherence of the environment itself.