title: A high-performance frequency stability compact CPT clock based on a Cs-Ne microcell.
abstract: This paper reports on a compact table-top Cs clock based on coherent population trapping (CPT) with advanced frequency stability performance. The heart of the clock is a single buffer gas Cs-Ne microfabricated cell. Using a distributed feedback (DFB) laser resonant with the Cs D1 line, the contrast of the CPT signal is found to be maximized around 80°C, a value for which the temperature dependence of the Cs clock frequency is canceled. Advanced techniques are implemented to actively stabilize the clock operation on a zero-light-shift point. The clock frequency stability is measured to be 3.8 × 10(-11) at 1 s and well below 10(-11) until 50,000 s. These results demonstrate the possibility to develop high-performance chip-scale atomic clocks using vapor cells containing a single buffer gas.
authors.forename: Rodolphe
authors.initials: R
authors.lastname: Boudot
authors.forename: Xiaochi
authors.initials: X
authors.lastname: Liu
authors.forename: Philippe
authors.initials: P
authors.lastname: Abbé
authors.forename: Ravinder
authors.initials: R
authors.lastname: Chutani
authors.forename: Nicolas
authors.initials: N
authors.lastname: Passilly
authors.forename: Serge
authors.initials: S
authors.lastname: Galliou
authors.forename: Christophe
authors.initials: C
authors.lastname: Gorecki
authors.forename: Vincent
authors.initials: V
authors.lastname: Giordano