Rabi Spectroscopy and Sensitivity of a Floquet Engineered Optical Lattice Clock

Year: 2021

Authors: Yin M.-J.; Wang T.; Lu X.-T.; Li T.; Wang Y.-B.; Zhang X.-F.; Li W.-D.; Smerzi A.; Chang H.

Autors Affiliation: Chinese Acad Sci, Key Lab Time & Frequency Primary Stand, Natl Time Serv Ctr, Xian 710600, Peoples R China; Chongqing Univ, Dept Phys, Chongqing 401331, Peoples R China; Chongqing Univ, Ctr Quantum Mat & Devices, Chongqing 401331, Peoples R China; Shanxi Univ, Dept Phys, Taiyuan 030006, Peoples R China; Shanxi Univ, Inst Theoret Phys, Taiyuan 030006, Peoples R China; QSTAR, Largo Enrico Fermi 2, I-50125 Florence, Italy; INO CNR, Largo Enrico Fermi 2, I-50125 Florence, Italy; LENS, Largo Enrico Fermi 2, I-50125 Florence, Italy; Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China.

Abstract: We periodically modulate the lattice trapping potential of a 87Sr 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.

Journal/Review: CHINESE PHYSICS LETTERS

Volume: 38 (7)      Pages from: 073201-1  to: 073201-16

KeyWords: QUANTUM SIMULATIONS; ENTANGLEMENT
DOI: 10.1088/0256-307X/38/7/073201

Citations: 11
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