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
Received in final form: 11 April 2014
Published online: 1 October 2014
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.
Key words: Quantum Information
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2014