耦合腔系统中Bose-Hubbard模型与稳态制备的理论研究

Theoretical Study on Bose-Hubbard Model and Steady State Preparation in Coupled Cavity System

该文研究两腔耦合系统,每个腔包含一个四能级原子,在强场驱动和大失谐条件下,得到系统的有效BoseHubbard哈密顿,通过改变经典场拉比频率进行量子操控,在拉比频率由小变大的过程中,系统经历由真空态向稳态的制备过程;通过模拟两腔之间的基态纠缠熵时,发现并得到最大熵的参数及纠缠熵的变化规律,为量子信息过程提供有效的模拟平台。

Two coupled-cavity system, each of which contains one four-level atom, is investigated. An effective BoseHubbard Hamiltonian can be achieved under strong classical driving and big detuning. The system undergo the process from vacuum state to steady state, by quantum control of classical Rabi frequency. Ground-state entanglement between two cavities is also studied. The result will provide simulator for the process of quantum information.