DocumentCode :
1365891
Title :
Preliminary results of the trapped atom clock on a chip
Author :
Lacroûte, Clément ; Reinhard, Friedemann ; Ramirez-Martinez, Fernando ; Deutsch, Christian ; Schneider, Tobias ; Reichel, Jakob ; Rosenbusch, Peter
Author_Institution :
Syst. de Reference Temps-Espace (SYRTE), Obs. de Paris, Paris, France
Volume :
57
Issue :
1
fYear :
2010
Firstpage :
106
Lastpage :
110
Abstract :
We present an atomic clock based on the interrogation of magnetically trapped 87Rb 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, mF = -1¿ to |F = 2, mF = 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 105 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.
Keywords :
atomic clocks; magnetic traps; rubidium; 87Rb; Ramsey fringes; Ramsey interrogation; atom chip; atom cooling; atom trapping; bandwidth 1.25 Hz; clock stability; clock transition; coplanar waveguide; magnetic flux density 3.23 G; magnetically trapped 87Rb atoms; photon excitation; trapped atom clock; Atomic clocks; Atomic measurements; Clouds; Coplanar waveguides; Magnetic domains; Magnetic fields; Packaging; Physics; Radio frequency; Stability;
fLanguage :
English
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
Publisher :
ieee
ISSN :
0885-3010
Type :
jour
DOI :
10.1109/TUFFc.2010.1385
Filename :
5361529
Link To Document :
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