作者
Stanley Chan, MD Reid, Z Ficek
发表日期
2009/3/9
期刊
Journal of Physics B: Atomic, Molecular and Optical Physics
卷号
42
期号
6
页码范围
065507
出版商
IOP Publishing
简介
A detailed treatment of the entanglement dynamics of two distant but non-identical systems is presented. We study the entanglement evolution of two remote atoms interacting independently with a cavity field, as in the double Jaynes–Cummings model. The four-qubit pairwise concurrences are studied, allowing for asymmetric atom–cavity couplings and off-resonant interactions. Counter to intuition, imperfect matching can prove advantageous to entanglement creation and evolution. For two types of initial entanglement, corresponding to spin-correlated and anti-correlated Bell states Φ and Ψ, a full, periodic and directed transfer of entanglement into a specific qubit pair is possible, for resonant interactions, depending on the choice of relative couplings. Furthermore, entanglement transfer and sudden death (ESD) can be prevented using off-resonant interactions, although for some initial states, detunings will trigger …
引用总数
20092010201120122013201420152016201720182019202020212022202341411574253353262
学术搜索中的文章
S Chan, MD Reid, Z Ficek - Journal of Physics B: Atomic, Molecular and Optical …, 2009