制备囚禁冷离子的振动压缩量子态

基于非Lamb-Dicke近似下激光-离子相互作用的动力学规律，讨论了如何利用一系列的激光脉冲来驱动囚禁冷离子.从囚禁冷离子的运动基态出发获得压缩相干态、压缩奇偶相干态、压缩真空态等一系列的振动数态的叠加态.结果表明，只要适当地调节各个所用激光脉冲的长度和相位，总能很好逼近所需要的压缩量子态. 关键词： 囚禁冷离子 激光脉冲 压缩量子态

Generation of squeezed quantum states of a single trapped cold ion

Based on the quantum dynamics of laser-ion interaction beyond the Lamd_Dicke limit, we discuss how to superpose a series of vibrational number states of a single trapped ion from the motional ground state. It is shown that, by controlling the durations and phases of the sequentially applied laser pulses, these superposed quantum states could well approach to the various target quantum states, e.g., squeezed coherent states, squeezed odd/even coherent states and squeezed vacuum states, etc.Their experimental realizabilities are also discussed.