Generalized Ramsey Excitation Scheme with Suppressed Light Shift
Generalized Ramsey Excitation Scheme with Suppressed Light Shift
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DOI：
10.1103/physrevlett.109.213002
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发表时间：
2012-11-21
影响因子：
8.6
通讯作者：
Yudin, V. I.
中科院分区：
文献类型：
--
作者：
Huntemann, N.;Lipphardt, B.;Yudin, V. I.
实验研究了最近提出的一种光激发方案V.I. Yudin等人[Phys.Rev.A82，011804（R）（2010）]，其是分离振荡场的Ramsey方法的推广，并且由三个激励脉冲的序列组成。脉冲序列被定制以产生共振信号，该共振信号不受与探测场的相互作用相关的跃迁频率的光偏移和其他偏移的影响。我们研究了用单个Yb-171（+）离子捕获的方案，并在光频移远大于激发线宽的条件下激发了高度禁戒的S-2（1/2）- F-2（7/2）电八极跃迁，激发线宽在赫兹范围内。实验表明，光移抑制了四个数量级，并对其波动具有免疫力。
We experimentally investigate a recently proposed optical excitation scheme V. I. Yudin et al. [Phys. Rev. A 82, 011804(R) (2010)] that is a generalization of Ramsey's method of separated oscillatory fields and consists of a sequence of three excitation pulses. The pulse sequence is tailored to produce a resonance signal that is immune to the light shift and other shifts of the transition frequency that are correlated with the interaction with the probe field. We investigate the scheme using a single trapped Yb-171(+) ion and excite the highly forbidden S-2(1/2) - F-2(7/2) electric-octupole transition under conditions where the light shift is much larger than the excitation linewidth, which is in the hertz range. The experiments demonstrate a suppression of the light shift by four orders of magnitude and an immunity against its fluctuations.