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Conference on Precision Electromagnetic Measurements

Very-high Q microwave resonances in trapped /sup 171/Yb/sup +/ ions: application as a microwave frequency standard

Peter Fisk, M.A. Lawn, C. Coles, Anthony G. Mann, D. G. Blair

Published Dec 17, 2002• 0 citations
Publisher

Abstract

The 12.6 GHz microwave resonance in /sup 171/Yb/sup +/ ions confined in a linear Paul trap is interrogated using a cryogenic sapphire resonator-based microwave source. Line Q factors of up to 1.1/spl times/10/sup 13/ have been observed. We report on the performance of the ion trap-sapphire resonator system as a prototype 12.6 GHz frequency standard.>

DOI
10.1109/cpem.1994.333303

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The authors report preliminary results of precision microwave-optical double resonance spectroscopy on buffer gas cooled /sup 171/Yb/sup +/ ions confined in a linear Paul trap as a microwave frequency standard at 12.6 GHz. They also report laser cooling of trapped /sup 171/Yb/sup +/ ions. Temperatures below 1 K have been achieved, and evidence for a phase transition to a crystal-like state has been found. This temperature is sufficiently low to reduce the fractional second-order Doppler shift of the microwave resonance to below 10/sup -14/.>