摘要
提出了计算两体连续变量纠缠态散射的一种方法。证明了一维势垒与分束器等价,并计算了双模压缩真空态的一维势垒散射。计算发现,双模压缩真空态经过一维势垒散射后,将失去纠缠,但可以有非零保真度,并且保真度随压缩因子的增大而减小。
A method to compute the scattering of two-partite continuous variable entangled state is proposed.The equivalence of one dimensional potential barrier and beam splitter is proven and the scattering of one dimensional potential barrier in two-mode squeezed vacuum state is studied.The results show that after the scattering of one dimensional potential barrier,the two-mode squeezed vacuum state will lose its entanglement,but it can keep a nonzero fidelity,and the fidelity will decrease as the squeezed factor i...
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2009年第10期1410-1413,共4页
Journal of Optoelectronics·Laser
基金
国家自然科学基金资助项目(10774088)
关键词
双模压缩真空态
散射
势垒
the two-mode squeezed vacuum state
scattering
potential barrier
