Université de Neuchâtel

Design of atomic clock cavity based on a loop-gap geometry and modified boundary conditions

Ivanov, Anton E ; Affolderbach, Christoph ; Mileti, Gaetano ; Skrivervik, Anja K

In: International Journal of Microwave and Wireless Technologies, 2017, vol. 9, no. 7, p. 1373-1386

In this study, we investigate a concept that can be used to improve the magnetic field homogeneity in a microwave cavity applied in a novel, high-performance atomic frequency standard. We show that by modifying the boundary conditions in the case of a loop-gap geometry, a good improvement of the field homogeneity can be obtained. Such a design demonstrates high potential to improve the frequency...

Université de Neuchâtel

Compact High-Performance Continuous-Wave Double-Resonance Rubidium Standard with 1.4 × 10−13 τ −1/2 Stability

Bandi, Thejesh ; Affolderbach, Christoph ; Stefanucci, Camillo ; Merli, Francesco ; Skrivervik, Anja K ; Mileti, Gaetano

In: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2014, vol. 61, no. 11, p. 1769-1778

We present our studies on a compact high-performance continuous wave (CW) double-resonance (DR) rubidium frequency standard in view of future portable applications. Our clock exhibits a short-term stability of 1.4 × 10−13 τ −1/2, consistent with the short-term noise budget for an optimized DR signal. The metrological studies on the medium- to longterm stability...

Université de Neuchâtel

The Microloop-Gap Resonator: A Novel Miniaturized Microwave Cavity for Double-Resonance Rubidium Atomic Clocks

Violetti, Maddalena ; Pellaton, Matthieu ; Affolderbach, Christoph ; Merli, Francesco ; Zürcher, Jean-François ; Mileti, Gaetano ; Skrivervik, Anja K

In: IEEE Sensors Journal, 2014, vol. 14, no. 9, p. 3193-3200

Nowadays mobile and battery-powered applications push the need for radically miniaturized and low-power frequency standards that surpass the stability achievable with quartz oscillators. For the miniaturization of double-resonance rubidium (87Rb) atomic clocks, the size reduction of the microwave cavity or resonator (MWR) to well below the wavelength of the atomic transition (6.835 GHz...