摘要
位移叠加态是由位移算符作用于光子数叠加态而产生。本文讨论了这种位移叠加态的量子统计性质及其与位移算符的关系。计算表明位移算符虽然不改变光子数叠加态中场正交分量的压缩特性，但却改变了其振幅平方的压缩特性。本文中描写了这种位移叠加态的振幅平方压缩及其压缩区域。
Displaced superposition states can be derived by acting on the superposition states with displacement operator.We discuss the quantum statistical properties of these states and relate these properties to the displacement operator.It can be shown that the displacement operator can not affect the quadrature squeezing of amplitude in superposition states but can affect the amplitude-squared squeezing.We evaluate the amplitude-squared squeazing and squeeze zones of displaced superposititon states.
关键词
叠加态
压缩
位移算符
superposition state,squeezing,displacement operator
