Many-body gap protection of motional dephasing of an optical clock transition

• URL: http://arxiv.org/abs/2409.16265v1
• Date: Tue, 24 Sep 2024 17:37:47 GMT
• Title: Many-body gap protection of motional dephasing of an optical clock transition
• Authors: Zhijing Niu, Vera M. Schäfer, Haoqing Zhang, Cameron Wagner, Nathan R. Taylor, Dylan J. Young, Eric Yilun Song, Anjun Chu, Ana Maria Rey, James K. Thompson,
• Abstract summary: Quantum simulation and metrology with atoms, ions, and molecules often rely on using light fields to manipulate their internal states. absorbed momentum from the light fields can induce spin-orbit coupling and associated motional-induced (Doppler) dephasing. We experimentally demonstrate the suppression of Doppler dephasing on a strontium optical clock transition by enabling atomic interactions through a shared mode.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Quantum simulation and metrology with atoms, ions, and molecules often rely on using light fields to manipulate their internal states. The absorbed momentum from the light fields can induce spin-orbit coupling and associated motional-induced (Doppler) dephasing, which may limit the coherence time available for metrology and simulation. We experimentally demonstrate the suppression of Doppler dephasing on a strontium optical clock transition by enabling atomic interactions through a shared mode in a high-finesse optical ring cavity. The interactions create a many-body energy gap that increases with atom number, suppressing motional dephasing when it surpasses the dephasing energy scale. This collective approach offers an alternative to traditional methods, like Lamb-Dicke confinement or M\"ossbauer spectroscopy, for advancing optical quantum sensors and simulations.

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