title: Preliminary results of the trapped atom clock on a chip.
abstract: We present an atomic clock based on the interrogation of magnetically trapped (87)Rb atoms. Two photons, in the microwave and radiofrequency domain, excite the clock transition. At a magnetic field of 3.23 G the clock transition from |F = 1, m(F) = -1> to |F = 2, m(F) = 1> is 1st-order insensitive to magnetic field variations. Ramsey interrogation times longer than 2 s can be achieved, leading to a projected clock stability in the low 10(-13) at 1 s for a cloud of 10(5) atoms. We use an atom chip to cool and trap the atoms. A coplanar waveguide is integrated to the chip to carry the Ramsey interrogation signal, making the physics package as small as (5 cm)(3). We describe the experimental setup and show preliminary Ramsey fringes of line width 1.25 Hz.
authors.forename: Clement
authors.initials: C
authors.lastname: Lacroute
authors.forename: Friedemann
authors.initials: F
authors.lastname: Reinhard
authors.forename: Fernando
authors.initials: F
authors.lastname: Ramirez-Martinez
authors.forename: Christian
authors.initials: C
authors.lastname: Deutsch
authors.forename: Tobias
authors.initials: T
authors.lastname: Schneider
authors.forename: Jakob
authors.initials: J
authors.lastname: Reichel
authors.forename: Peter
authors.initials: P
authors.lastname: Rosenbusch
mesh_terms: D017785:Photons; D011868:Radioisotopes / Q000737:chemistry*; D012413:Rubidium / Q000737:chemistry*; D012542:Scattering, Radiation; D013997:Time Factors
chemical_list: D011868:Radioisotopes; D012413:Rubidium