An Optical Lattice Clock with Spin-polarized 87Sr Atoms

Xavier Baillard (1) , Mathilde Hugbart (1) , Rodolphe Le Targat (1) , Philip G. Westergaard (1) , Arnaud Lecallier (1) , Frédéric Chapelet (1) , Michel Abgrall (1) , Giovanni D. Rovera (1) , Philippe Laurent (1) , Peter Rosenbusch (1) , Sébastien Bize (1) , Giorgio Santarelli (1) , André Clairon (1) , Pierre Lemonde (1) , Gesine Grosche (2) , Burghard Lipphardt (2) , Harald Schnatz (2)

1 SYRTE - Systèmes de Référence Temps Espace
2 PTB - Physikalisch-Technische Bundesanstalt [Braunschweig]

We present a new evaluation of an 87Sr optical lattice clock using spin polarized atoms. The frequency of the 1S0-3P0 clock transition is found to be 429 228 004 229 873.6 Hz with a fractional accuracy of 2.6 10^{-15}, a value that is comparable to the frequency difference between the various primary standards throughout the world. This measurement is in excellent agreement with a previous one of similar accuracy.

Domaines: Physique Atomique [physics.atom-ph]

Xavier Baillard, Mathilde Hugbart, Rodolphe Le Targat, Philip G. Westergaard, Arnaud Lecallier, et al.. An Optical Lattice Clock with Spin-polarized 87Sr Atoms. 2007. ⟨hal-00175653⟩