Frequency ratio of Al+ and Hg+ single-ion optical clocks; metrology at the 17th decimal place

Science

Volumn 319, Issue 5871, 2008, Pages 1808-1812

  Rosenband, T ^a   Hume, D B ^a   Schmidt, P O ^a,b   Chou, C W ^a   Brusch, A ^a   Lorini, L ^a,c   Oskay, W H ^a,d   Drullinger, R E ^a   Fortier, T M ^a   Stalnaker, J E ^a,e   Diddams, S A ^a   Swann, W C ^a   Newbury, N R ^a   Itano, W M ^a   Wineland, D J ^a   Bergquist, J C ^a  

^a NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY   (United States)

^b UNIVERSITY OF INNSBRUCK   (Austria)

^c ISTITUTO NAZIONALE DI RICERCA METROLOGICA   (Italy)

^d Stanford Research Systems   (United States)

^e OBERLIN COLLEGE   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ALUMINUM; MERCURY;

ALUMINUM; COSMOLOGY; ION; MERCURY (ELEMENT); PRECISION; SATELLITE NAVIGATION SYSTEM; STATISTICAL ANALYSIS; TEMPORAL VARIATION; UNCERTAINTY ANALYSIS;

ACCURACY; ARTICLE; COSMOS; MOLECULAR CLOCK; PHYSICS; PRIORITY JOURNAL; STATISTICAL ANALYSIS; TIME; UNCERTAINTY;

EID: 41349092289     PISSN: 00368075     EISSN: 10959203     Source Type: Journal    
DOI: 10.1126/science.1154622     Document Type: Article

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35. We thank C. W. Oates, M. A. Lombardi, and D. R. Smith for comments on the manuscript and K. Feder, J. Nicholson, and P. Westbrook for specialty nonlinear fiber used in the fiber frequency comb. This work was supported by the Office of Naval Research, Disruptive Technology Office, and NIST. P.O.S. acknowledges support from the Alexander von Humboldt Foundation. This work is a contribution of NIST and is not subject to U.S. copyright.