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Electric quadrupole shift cancellation in single-ion optical frequency standards.

作者信息

Dubé P, Madej A A, Bernard J E, Marmet L, Boulanger J-S, Cundy S

机构信息

Institute for National Measurement Standards, National Research Council, Ottawa, Canada K1A 0R6.

出版信息

Phys Rev Lett. 2005 Jul 15;95(3):033001. doi: 10.1103/PhysRevLett.95.033001. Epub 2005 Jul 12.

DOI:10.1103/PhysRevLett.95.033001
PMID:16090738
Abstract

The electric quadrupole shift is presently the most significant source of uncertainty on the systematic shifts for several single-ion optical frequency standards. We present a simple method for cancelling this shift based on measurements of the Zeeman spectrum of the clock transition. This method is easy to implement and yields very high cancellation levels. A fractional uncertainty of 5 x 10(-18) for the canceled quadrupole shift is estimated for a measurement of the absolute frequency of the 5s (2)S(1/2)-4d (2)D(5/2) clock transition of 88Sr+.

摘要

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