All-optical broadband excitation of the motional state of trapped ions
All-optical broadband excitation of the motional state of trapped ions
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DOI：
10.1140/epjd/e2012-30377-8
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发表时间：
2012-05
期刊：
影响因子：
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通讯作者：
K. Sheridan;N. Seymour-Smith;A. Gardner;M. Keller
中科院分区：
文献类型：
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作者：
K. Sheridan;N. Seymour-Smith;A. Gardner;M. Keller
我们开发了一种新颖的全光宽带方案，用于激发、放大和测量射频陷阱中离子的长期运动。仅需要激光视线，光学激发引起的振荡就被相干放大，以精确控制和测量离子的长期运动。我们的激励方案可以产生相干运动，该运动对于长期频率的变化具有鲁棒性。因此，我们的方案非常适合在长期频率随时间变化的条件下激发所需水平的振荡运动。通过多普勒测速仪测量振荡幅度，我们对实验参数进行了表征，并将其与分子动力学模拟进行了比较，分子动力学模拟提供了系统的完整描述。
We have developed a novel all-optical broadband scheme for exciting, amplifying and measuring the secular motion of ions in a radio frequency trap. Requiring only laser line-of-sight, oscillation induced by optical excitation has been coherently amplified to precisely control and measure the ion’s secular motion. Our excitation scheme can generate coherent motion which is robust against variations in the secular frequency. Therefore, our scheme is ideal to excite the desired level of oscillatory motion under conditions where the secular frequency is evolving in time. Measuring the oscillation amplitude through Doppler velocimetry, we have characterized the experimental parameters and compared them with a molecular dynamics simulation which provides a complete description of the system.