Demonstration of a Dual Alkali Rb/Cs Atomic Fountain Clock

Abstract

We report the operation of a dual Rb/Cs atomic fountain clock. 133Cs and 87Rb atoms are cooled, launched, and detected simultaneously in LNE-SYRTE's FO2 double fountain. The dual clock operation occurs with no degradation of either the stability or the accuracy. We describe the key features for achieving such a simultaneous operation. We also report on the results of the first Rb/Cs frequency measurement campaign performed with FO2 in this dual atom clock configuration, including a new determination of the absolute 87Rb hyperfine frequency.

6 pages, 10 figures, 23 references

References in corpus (1)

• Frequency shift of hyperfine transitions due to blackbody radiation

Cited by in corpus (7)

• Progress in Atomic Fountains at LNE-SYRTE
• Improved tests of Local Position Invariance using 87Rb and 133Cs fountains
• Evaluating and Minimizing Distributed Cavity Phase Errors in Atomic Clocks
• Evaluation of Doppler Shifts to Improve the Accuracy of Primary Atomic Fountain Clocks
• The unit of time: present and future directions
• Probing Supersymmetry Breaking Scale with Atomic Clocks
• Drift-compensated Low-noise Frequency Synthesis Based on a cryoCSO for the KRISS-F1