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.

arXiv comment6 pages, 10 figures, 23 references

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• Cold atom Clocks and Applications
• Ultra-low noise microwave generation with fiber-based optical frequency comb and application to atomic fountain clock
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Cited by in corpus (22)

• Search for New Physics with Atoms and Molecules
• Progress in Atomic Fountains at LNE-SYRTE
• Searching for an oscillating massive scalar field as a dark matter candidate using atomic hyperfine frequency comparisons
• Violation of the equivalence principle from light scalar dark matter
• Improved tests of Local Position Invariance using 87Rb and 133Cs fountains
• Optical to microwave clock frequency ratios with a nearly continuous strontium optical lattice clock
• Contributing to TAI with a Secondary Representation of the SI Second
• Evaluation of Doppler Shifts to Improve the Accuracy of Primary Atomic Fountain Clocks
• Evaluating and Minimizing Distributed Cavity Phase Errors in Atomic Clocks
• State-insensitive trapping of Rb atoms: linearly versus circularly polarized lights
• Lorentz invariance violations in the interplay of quantum gravity with matter
• Extended coherence time on the clock transition of optically trapped Rubidium
• Atomic fountains and optical clocks at SYRTE: status and perspectives
• The unit of time: present and future directions
• Atomic clocks with suppressed blackbody radiation shift
• Blackbody radiation shift in 87Rb frequency standard
• Advances in Development of Quartz Crystal Oscillators at Liquid Helium Temperatures
• Next Generation of Phonon Tests of Lorentz Invariance using Quartz BAW Resonators
• Tunable Microwave Magnetic Field Detection based on Rabi Resonance with a Single Cesium-Rubidium Hybrid Vapor Cell
• Probing Supersymmetry Breaking Scale with Atomic Clocks
• Measurement of the spin-dipolar part of the tensor polarizability of ${}^{87}$Rb
• Drift-compensated Low-noise Frequency Synthesis Based on a cryoCSO for the KRISS-F1