arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0907.2992quant-ph
收藏

双模非线性Jaynes-Cummings模中的纠缠动力学

Dynamics of entanglement in a two-mode nonlinear Jaynes-Cummings mode

A B M Ahmed, S Sivakumar

摘要:

研究了克尔介质中二能级原子与单模电磁场依赖强度相互作用的纠缠动力学。相互作用的形式使得哈密顿演化是精确可解的。的哈密顿量被证明是一个变形的Jaynes-Cummings模型承认一个封闭的,对称的代数。研究了初始光场为相干态或压缩真空态时粒子数反转和原子与光场纠缠的动力学。分析扩展到双模腔场与二能级原子相互作用的情形。对于双模情形,初始光场为一对相干态或双模压缩真空。讨论了非线性、强度相关相互作用和失谐量对系统动力学的影响,并与单模情况进行了比较。

英文摘要:

Dynamics of entanglement due to intensity-dependent interaction between a two-level atom and a single-mode electromagnetic field in a Kerr medium is studied. The form of the interaction is such that the Hamiltonian evolution is exactly solvable. The Hamiltonian is shown to be a deformed Jaynes-Cummings model admitting a closed, symmetric algebra. Dynamics of population inversion and atom-field entanglement are studied taking the initial state of the field to be either a coherent state or a squeezed vacuum. Analysis is extended to the case of a two-mode cavity field interacting with a two-level atom. For the two-mode case, the initial field is a pair coherent state or a two-mode squeezed vacuum. Effects due to nonlinearity, intensity-dependent interaction and detuning on the dynamics are discussed and compared with those of the single-mode case.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑