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Título del libro: 2009 Ieee International Frequency Control Symposium Joint With The 22nd European Frequency And Time Forum
Título del capítulo: Preliminary results of the trapped atom clock on a chip

Autores UNAM:
FERNANDO RAMIREZ MARTINEZ;
Autores externos:

Idioma:

Año de publicación:
2009
Palabras clave:

Atom chips; Clock stability; Clock transition; Experimental setup; Interrogation signal; Magnetic field variations; Radio frequencies; Ramsey fringes; Trapped atoms; Two photon; Atomic clocks; Coplanar waveguides; Frequency standards; Machine tools; Magnetic fields; Rubidium; Atoms


Resumen:

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. Long Ramsey interrogation times can thus be achieved, leading to a projected clock stability in the low 10 -13 at 1s. We use an atom chip to cool and trap the atoms. A coplanar waveguide has been integrated to the chip to carry the Ramsey interrogation signal, making the physics package as small as (5cm)3. We describe the experimental setup and show preliminary Ramsey fringes of line width 1.25Hz.


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