Two-photon rubidium clock detecting 776~nm fluorescence
Atomic Physics
2025-10-13 v1
Abstract
The optical atomic clock based on the two-photon transition in rubidium is a candidate for a next generation, manufacturable, portable clock that fits in a small size, weight, and power (SWaP) envelope. Here, we report the first two-photon rubidium clock stabilized by detecting 776~nm fluorescence. We also demonstrate the use of a multi-pixel photon counter as a low voltage substitute to a photomultiplier tube in the feedback loop to the clock laser.
Keywords
Cite
@article{arxiv.2510.09560,
title = {Two-photon rubidium clock detecting 776~nm fluorescence},
author = {River Beard and Kyle W. Martin and John D. Elgin and Brian L. Kasch and Sean P. Krzyzewski},
journal= {arXiv preprint arXiv:2510.09560},
year = {2025}
}
Comments
9 pages, 4 figures