title: Frequency measurement of the 2S(1/2)-2D(3/2) electric quadrupole transition in a single 171Yb+ ion.
abstract: We report on precision laser spectroscopy of the 2S(1/2)(F = 0)-2D(3/2) (F = 2, m(F) = 0) clock transition in a single ion of 171Yb+. The absolute value of the transition frequency, determined using an optical frequency comb referenced to a hydrogen maser, is 688358979309310 +/- 9 Hz. This corresponds to a fractional frequency uncertainty of 1.3 x 10(-14).
authors.affiliation: National Physical Laboratory, Middlesex, UK. stephen.webster@npl.co.uk
authors.forename: Stephen
authors.initials: S
authors.lastname: Webster
authors.forename: Rachel
authors.initials: R
authors.lastname: Godun
authors.forename: Steven
authors.initials: S
authors.lastname: King
authors.forename: Guilong
authors.initials: G
authors.lastname: Huang
authors.forename: Barney
authors.initials: B
authors.lastname: Walton
authors.forename: Veronika
authors.initials: V
authors.lastname: Tsatourian
authors.forename: Helen
authors.initials: H
authors.lastname: Margolis
authors.forename: Stephen
authors.initials: S
authors.lastname: Lea
authors.forename: Patrick
authors.initials: P
authors.lastname: Gill