量子光学学报, 2012, 18 (3): 256, 网络出版: 2012-09-26
高斯型耦合多光子Tavis-Cummings模型中场与原子的纠缠特性
The Entangled Properties of Field and Two Atoms in Tavis-Cummings Model with Multi-Photon Gaussian Coupling
量子光学 多光子Tavis-Cummings模型 高斯型耦合 量子纠缠 quantum optics multi-photon Tavis-Cummings model Gaussian coupling quantum en-tanglement
摘要
利用全量子理论, 研究了多光子跃迁过程高斯型耦合Tavis-Cummings模型中场与原子的纠缠特性。讨论了多光子原子运动速度、光场初态的平均光子数及跃迁光子数对场与原子之间纠缠特性的影响。结果表明:原子运动速度的变化改变了场熵演化曲线的振荡时域; 光场初态影响场熵演化曲线的周期性; 跃迁光子数的增加使场熵演化曲线的振荡频率和场与原子之间的平均纠缠度变大。
Abstract
The properties of entanglement evolution between field and two atoms in Gaussian coupling Tavis-Cummings model in the multi-photon transition process are studied on the quantum theory. The influence on the properties of entanglement evolution between field and two atoms from atomic motion, the mean photon number in initial states of the light field, number of transition photons in the multi-photon transition process are discussed. The results show that the variation of atomic motion changes the time for the effective action to the evolution of field entropy. Initial states of the light field affect the evolution period to field entropy. With the increasing of the number of transition photons, the oscillation frequency and the mean degree of entanglement between field and atoms become larger.
张学光, 萨楚尔夫, 冯川, 李红星. 高斯型耦合多光子Tavis-Cummings模型中场与原子的纠缠特性[J]. 量子光学学报, 2012, 18(3): 256. ZHANG Xue-guang, Sachuerfu, FENG Chuan, LI Hong-xing. The Entangled Properties of Field and Two Atoms in Tavis-Cummings Model with Multi-Photon Gaussian Coupling[J]. Acta Sinica Quantum Optica, 2012, 18(3): 256.