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Conference on Lasers and Electro-Optics

Accurate Optical Clocks Based on Single Trapped Ion

Jim Berquist

Published May 6, 2007• 0 citations
OpenAlex

Abstract

Optical clocks based on narrow transitions of single ions have long promised unprecendented stability and accuracy but only lately has this potential begun to be realized. We will report our latest results. Article not available.

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Optical frequency standards based on narrow absorptions in laser-cooled single trapped ions have recently begun to demonstrate stabilities that are competitive with cold atom fountain microwave standards. This paper presents a short review of the wider state-of-the-art development of these single cold trapped ion frequency standards, coupled with a more detailed account of recent results achieved at National Physical Laboratory in respect of single ion systems based on 88Sr+, 87Sr+ and 171Yb+. Narrow linewidth data for the optical clock quadrupole and octupole transitions respectively at 674 nm in 88Sr+ and 467 nm in 171Yb+, are presented, together with a discussion of current systematics and future projections. The potential for optical clock operation is outlined.