Rabi Spectroscopy and Sensitivity of a Floquet Engineered Optical Lattice Clock

Abstract

We periodically modulate the lattice trapping potential of a ${}^{87}$Sr optical clock to Floquet engineer the clock transition. In the context of atomic gases in lattices, Floquet engineering has been used to shape the dispersion and topology of Bloch quasi-energy bands. Differently from these previous works manipulating the external (spatial) quasi-energies, we target the internal atomic degrees of freedom. We shape Floquet spin quasi-energies and measure their resonance profiles with Rabi spectroscopy. We provide the spectroscopic sensitivity of each band by measuring the Fisher information and show that this is not depleted by the Floquet dynamical modulation. The demonstration that the internal degrees of freedom can be selectively engineered by manipulating the external degrees of freedom inaugurates a novel device with potential applications in metrology, sensing and quantum simulations.

arXiv comment6 pages, 4 figures, including supplementary material, comments are welcome and more information at http://cqutp.org/users/xfzhang/

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Cited by in corpus (6)

• Dynamical symmetries of periodically-driven quantum systems and their spectroscopic signatures
• Floquet engineering Hz-Level Rabi Spectra in Shallow Optical Lattice Clock
• Doubly Modulated Optical Lattice Clock Interference and Topology
• Degenerate Rabi spectroscopy of the Floquet engineered optical lattice clock
• Low-frequency fiber-optic vibration sensing with a Floquet-engineered optical lattice clock
• The time-domain Landau-Zener-Stuckelberg-Majorana interference in optical lattice clock