Probe light-shift elimination in generalized hyper-Ramsey quantum clocks
Probe light-shift elimination in generalized hyper-Ramsey quantum clocks
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DOI：
10.1103/physreva.93.042506
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发表时间：
2015-11
影响因子：
2.9
通讯作者：
T. Zanon-Willette;E. Clercq;E. Arimondo
中科院分区：
文献类型：
--
作者：
T. Zanon-Willette;E. Clercq;E. Arimondo
我们提出了一种新的基于广义超拉姆齐共振的下一代量子时钟的询问方案，以抑制激光探测场本身引起的频移。具有特定相位选择的复合激光脉冲序列，频率失谐和持续时间相结合，产生非常有效和鲁棒的频率锁定信号，几乎完美地消除了从非谐振状态产生的光移，并将未受干扰的频率测量与激光强度解耦。在中间脉冲期间，使用$\pi/4$或$3\pi/4$激光相位步进的合成误差信号产生的频率锁点被严格保护，以防止大的激光脉冲面积变化和潜在应用频移补偿的误差。基于弱允许或完全禁止原子、离子、分子和原子核的光学跃迁的量子钟将受益于这些超稳定激光频率稳定方案，以达到低于10$^{-18}$水平的相对精度。
We present a new interrogation scheme for the next generation of quantum clocks to suppress frequency-shifts induced by laser probing fields themselves based on Generalized Hyper-Ramsey resonances. Sequences of composite laser pulses with specific selection of phases, frequency detunings and durations are combined to generate a very efficient and robust frequency locking signal with almost a perfect elimination of the light-shift from off resonant states and to decouple the unperturbed frequency measurement from the laser's intensity. The frequency lock point generated from synthesized error signals using either $\pi/4$ or $3\pi/4$ laser phase-steps during the intermediate pulse is tightly protected against large laser pulse area variations and errors in potentially applied frequency shift compensations. Quantum clocks based on weakly allowed or completely forbidden optical transitions in atoms, ions, molecules and nuclei will benefit from these hyper-stable laser frequency stabilization schemes to reach relative accuracies below the 10$^{-18}$ level.