论文标题
被困离子高度激发的运动状态的相干性能
Coherence properties of highly-excited motional states of a trapped ion
论文作者
论文摘要
我们介绍了一项限制在笔离子陷阱中的单个离子的各种运动状态的相干性能的研究。我们证明，使用Ramsey干涉法，离子的运动具有一秒钟的连贯时间。我们介绍了一种技术，以使用光学边带冷却的简单修改对高度激发的运动状态的不连贯叠加制备离子。对这些状态的连贯操作允许测量光学和运动连贯性。我们表明，尽管国家的准备不连贯，但这些备受推测的运动状态叠加的时间很长。此类状态可用于敏感的运动测量值。
We present a study of the coherence properties of a variety of motional states of a single ion confined in a Penning ion trap. We demonstrate that the motion of the ion has a coherence time of the order of one second, using Ramsey interferometry. We introduce a technique for preparing the ion in an incoherent superposition of highly-excited motional states using a simple modification of optical sideband cooling. Coherent manipulation of these states allow measurements of optical and motional coherence to be carried out. We show that these highly-excited motional state superpositions have long coherence times despite the incoherent preparation of the states. Such states can be useful for sensitive motional dephasing measurements.
