title: Demonstration of a dual alkali Rb/Cs fountain clock.
abstract: We report the operation of a dual Rb/Cs atomic fountain clock. (133)Cs and (87)Rb atoms are cooled, launched, and detected simultaneously in LNE-SYRTE's FO2 double fountain. The dual clock operation occurs with no degradation of either the stability or the accuracy. We describe the key features for achieving such a simultaneous operation. We also report on the results of the first Rb/Cs frequency measurement campaign performed with FO2 in this dual atom clock configuration, including a new determination of the absolute (87)Rb hyperfine frequency.
authors.affiliation: Laboratoire National de Métrologie-Système de Référence Temps Espace, Observatoire de Paris, France. jocelyne.guena@obspm.fr
authors.forename: Jocelyne
authors.initials: J
authors.lastname: Guéna
authors.forename: Peter
authors.initials: P
authors.lastname: Rosenbusch
authors.forename: Philippe
authors.initials: P
authors.lastname: Laurent
authors.forename: Michel
authors.initials: M
authors.lastname: Abgrall
authors.forename: Daniele
authors.initials: D
authors.lastname: Rovera
authors.forename: Giorgio
authors.initials: G
authors.lastname: Santarelli
authors.forename: Michael E
authors.initials: ME
authors.lastname: Tobar
authors.forename: Sébastien
authors.initials: S
authors.lastname: Bize
authors.forename: André
authors.initials: A
authors.lastname: Clairon