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As one of the crucial elements of microwave (MW) atomic clocks, Ramsey MW cavities are crucial for assisting MW–atom interactions. A dual-mode Ramsey cavity for a dual Rb/Cs atomic clock with simultaneous resonances at 6.83 and 9.19 GHz is presented here. The reported cavity, with its high mechanical strength and stability, can excite clock transitions in Rb and Cs atoms in the same zones, thereby providing a compact physical package for a dual Rb/Cs clock. Since both atoms are in the same MW–atom interaction environment, this measurement platform allows for high-accuracy comparisons.
References
-
-
1)
-
1. Guéna, J., Abgrall, M., Rovera, D., et al: ‘Improved tests of local position invariance using 87Rb and 133Cs fountains’, Phys. Rev. Lett., 2012, 109, p. 080801 (doi: 10.1103/PhysRevLett.109.080801).
-
2)
-
3. Guéna, J., Rosenbusch, P., Laurent, P., et al: ‘Demonstration of a dual alkali Rb/Cs fountain clock’, Trans. Ultrason. Ferroelectr. Freq. Control, 2010, 57, pp. 647–653 (doi: 10.1109/TUFFC.2010.1461).
-
3)
-
6. Collin, R.E.: ‘Field theory of guided waves’ (McGraw Hill, New York, 1990, 2nd edn.).
-
4)
-
7. Audoin, C., Giordano, V., Dimarcq, N., et al: ‘Properties of an optically pumped cesium-beam frequency standard with φ = π between the two oscillatory fields’, Trans. Instrum. Meas., 1994, 43, pp. 515–520 (doi: 10.1109/19.310160).
-
5)
-
4. Sun, F.Y., Huang, X.H., Bai, Q.S.: ‘Dual-mode Ramsey cavity for a dual Rb/Cs atomic clock’. IEEE Int. Frequency Control Symp., New Orleans, USA, May 2016, pp. 432–434.
-
6)
-
2. Bluhm, R., Kostelecký, V.A., Lane, C.D., et al: ‘Clock-comparison tests of Lorentz and CPT symmetry in space’, Phys. Rev. Lett., 2002, 88, p. 090801 (doi: 10.1103/PhysRevLett.88.090801).
-
7)
-
5. Vanier, J., Audoin, C.: ‘The quantum physics of atomic frequency standards’ (Adam Hilger, Bristol and Philadelphia, 1989).
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Dual-mode Ramsey microwave cavity for a dual Rb/Cs atomic clock