摘要
在Lamb -Dicke极限下 ,利用幺正变换 ,将处于驻波激光场中任意位置的囚禁离子哈密顿量变换为离子裸态基中的Jaynes -Commings模型哈密顿量 ,研究了其内外自由度的量子熵和纠缠 .结果表明 ,在非共振条件下 。
We have investigated the quantum entropy and entanglement of the internal and external degrees of freedom of a trapped ion in a standing wave laser by transforming the Hamiltonian to that in the Jaynes-Cummings system for the bare basis of the trapped ion under the Lamb-Dicke limit. Under the off-resonant condition, we have found the periodic entanglement between the internal and external degrees of freedom of a trapped ion.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2001年第12期2363-2368,共6页
Acta Physica Sinica
基金
国家自然科学基金 (批准号 :198740 2 0 )资助的课题~~
