Progress of a compact microwave clock based on atoms cooled with a diffractive optic

Rachel Elvin; Gregory W. Hoth; Michael Wright; Ben Lewis; Alan Bregazzi; Brendan Keliehor; Aidan S. Arnold; Paul F. Griffin; Erling Riis

doi:10.1117/12.2552587

25 February 2020 Progress of a compact microwave clock based on atoms cooled with a diffractive optic

Rachel Elvin, Gregory W. Hoth, Michael Wright, Ben Lewis, Alan Bregazzi, Brendan Keliehor, Aidan S. Arnold, Paul F. Griffin, Erling Riis

Author Affiliations +

Proceedings Volume 11296, Optical, Opto-Atomic, and Entanglement-Enhanced Precision Metrology II; 1129609 (2020) https://doi.org/10.1117/12.2552587
Event: SPIE OPTO, 2020, San Francisco, California, United States

Abstract

An atomic clock based on a compact source of cold atoms and coherent population trapping (CPT) is an encouraging goal for future low-volume atomic frequency references. Our experiment seeks to investigate the performance of such a system by applying CPT in a high-contrast lin⊥lin polarisation scheme to our ⁸⁷Rb grating magneto optical trap (GMOT) apparatus. In this paper, we report on our progress of improving short- term stability of our cold-atom CPT apparatus. Our recent measurements have shown a short-term stability of 5 x 10^-11/√_τ, with the ability to average down for times τ>100s.

Citation Download Citation

Rachel Elvin, Gregory W. Hoth, Michael Wright, Ben Lewis, Alan Bregazzi, Brendan Keliehor, Aidan S. Arnold, Paul F. Griffin, and Erling Riis "Progress of a compact microwave clock based on atoms cooled with a diffractive optic", Proc. SPIE 11296, Optical, Opto-Atomic, and Entanglement-Enhanced Precision Metrology II, 1129609 (25 February 2020); https://doi.org/10.1117/12.2552587

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