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Poster Session

Poster Session I (4pm-6pm CDT)

4:00 pm – 6:00 pm, Tuesday June 4 Session D00
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A two-photon optical atomic clock using the 87Rb 4DJ state

Poster 147
Presenter: Carlos Owens (University of Michigan)
Authors: Alisher Duspayev (University of Michigan), Bineet Dash (University of Michigan), Georg Raithel (University of Michigan)

We investigate the prospects for realizing a portable, all-optical atomic clock with the two-photon 5S1/2 → 4DJ transition in rubidium, using a combination of infrared and telecom laser wavelengths. The quantum-noise-limited stability is estimated to be below 10-11/√Hz, with a limit of about 10-12 under the assumption that the line center can be determined within a factor of 10-3 of the natural linewidth. Leading clock systematics are expected to be the ac Stark shift resulting from trapping laser light, as well as Zeeman shifts due to applied bias magnetic fields. Our analysis includes calculations of the dynamic polarizabilities of relevant states. From our results, we identify “magic” wavelength conditions for the two-photon clock transition. This proposal benefits from low size, weight, and power (SWaP) requirements, and uncertainties that are comparable to existing rubidium-based microwave and optical clock designs. Our study could be of interest for long-distance clock comparison and quantum-communication protocols, as well as lay a foundation for novel precision measurements of low-lying D states in rubidium.

Funding acknowledgement

This work was supported by the NSF Grant No. PHY-2110049.

POSTERS (157)