Hyper-Ramsey spectroscopy with probe laser intensity fluctuations

Abstract

We examine the influence of probe laser intensity fluctuations on hyper-Ramsey spectroscopy. We assume, as is appropriate for relevant cases of interest, that the probe laser intensity $I$ determines both the Rabi frequency $(\propto \sqrt{I})$ and the frequency shift to the atomic transition $(\propto I)$ during probe laser interactions with the atom. The spectroscopic signal depends on these two quantities that co-vary with fluctuations in the probe laser intensity. Introducing a simple model for the fluctuations, we find that the signature robustness of the hyper-Ramsey method can be compromised. Taking the Yb${}^{+}$ electric octupole clock transition as an example, we quantify the clock error under different levels of probe laser intensity fluctuations.

5 pages, accepted to PRA Rapid Communication

References in corpus (4)

• A generalized Ramsey excitation scheme with suppressed light shift
• Auto-Balanced Ramsey Spectroscopy
• Quantum engineering of atomic phase-shifts in optical clocks
• Universal ultra-robust interrogation protocol with zero probe-field-induced frequency shift for quantum clocks and high-accuracy spectroscopy

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