Precision optical and microwave synthesis of atomic clock frequencies with optical frequency combs

Nicholas Nardelli; Tara M Fortier; Marco Pomponio; Esther Baumann; Craig Nelson; Thomas R Schibli; Archita Hati

doi:10.1117/12.2617218

7 March 2022 Precision optical and microwave synthesis of atomic clock frequencies with optical frequency combs

Nicholas Nardelli, Tara M Fortier, Marco Pomponio, Esther Baumann, Craig Nelson, Thomas R Schibli, Archita Hati

Proceedings Volume 12016, Optical and Quantum Sensing and Precision Metrology II; 1201604 (2022) https://doi.org/10.1117/12.2617218
Event: SPIE OPTO, 2022, San Francisco, California, United States

Abstract

Low noise microwave signals, generated by coherent division from optical atomic clock signals with an optical frequency comb, are amongst the lowest noise and highest stability of both room temperature and cryogenic electronic sources. The latter conversion is necessary for the realization of timescales, and redefinition of the SI second, from next generation atomic clocks. To this end, I will describe a highly robust technique that uses feedforward to suppress noise in optical-to-microwave division. This technique also supports the simultaneous conversion of multiple independent optical signals to microwave signals with a single comb, permitting the independent synthesis of microwave signals from multiple atomic clocks with accuracy near 1 part in 10-18.

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Citation Download Citation

Nicholas Nardelli, Tara M Fortier, Marco Pomponio, Esther Baumann, Craig Nelson, Thomas R Schibli, and Archita Hati "Precision optical and microwave synthesis of atomic clock frequencies with optical frequency combs", Proc. SPIE 12016, Optical and Quantum Sensing and Precision Metrology II, 1201604 (7 March 2022); https://doi.org/10.1117/12.2617218

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