https://doi.org/10.1140/epjd/e2015-60056-1
Regular Article
Non-Markovian dynamics of multipartite open quantum systems with internal interactions
1
College of Mechatronics and Automation, National University of
Defense Technology, Changsha
410073, P.R.
China
2
College of Science, National University of Defense
Technology, Changsha
410073, P.R.
China
a e-mail: boyangliu2011@hotmail.com
b e-mail: zhangming@nudt.edu.cn
Received:
29
January
2015
Received in final form:
10
March
2015
Published online:
10
April
2015
How internal interactions influence the state dynamics of multipartite open quantum systems is investigated with a typical model, where two interacting qubits are coupled with a non-Markovian vacuum field environment. A general state dynamical equation containing all the internal interactions is derived and its analytical solution is presented for the system initially in an extended Werner-like state and coupled with a Lorentzian field. With a discussion of concurrence evolutions in various systems, our research indicates that the entanglement could be significantly affected by internal interactions and omitting them imprudently would lead to errors in estimating features of the system.
Key words: Quantum Information
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2015
