@article{13508, author = {Zhijing Niu and Vera Schäfer and Haoqing Zhang and Cameron Wagner and Nathan Taylor and Dylan Young and Eric Song and Anjun Chu and Ana Maria Rey and James Thompson}, title = {Many-body gap protection of motional dephasing of an optical clock transition}, 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 Mössbauer spectroscopy, for advancing optical quantum sensors and simulations.
}, year = {2024}, journal = {Submitted}, url = {https://arxiv.org/abs/2409.16265}, }