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Demonstration of a high-performance pulsed optically pumped Rb clock based on a compact magnetron-type microwave cavity
Résumé We demonstrate a high-performance pulsed optically pumped (POP) Rb vapor-cell clock based on a magnetron-type microwave cavity of only 44 cm3 external volume. Using optical detection, an unprecedented 35% contrast of the Ramsey signal has been obtained. Both the signal-to-noise ratio (of 30 000) and the estimated shot-noise limit of 1.7 × 10−14 τ−1/2 are at the same level as those found with a bigger cylindrical TE011 cavity (100 cm3 inner volume) and are sufficient for achieving excellent clock stability. Rabi oscillations are measured and indicate a sufficiently uniform microwave magnetic field distribution inside the cavity. The instability sources for the POP clock's performance are analyzed. A short-term stability of 2.1 × 10−13 τ−1/2 is demonstrated which is consistent with the noise budget.
   
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Citation Kang, S., Gharavipour, M., Affolderbach, C., Gruet, F., & Mileti, G. (2015). Demonstration of a high-performance pulsed optically pumped Rb clock based on a compact magnetron-type microwave cavity. Journal of Applied Physics, 117(10), 104510-104514.
   
Type Article de périodique (Anglais)
Date de publication 12-3-2015
Nom du périodique Journal of Applied Physics
Volume 117
Numéro 10
Pages 104510-104514
URL http://dx.doi.org/10.1063/1.4914493