Geometric phase of an atom inside an adiabatic radio frequency potential

Details Geometric phase of an atom inside an adiabatic radio frequency potential Geometric phase of an atom inside an adiabatic radio frequency potential

2007-04-04

arxiv.org/abs/0704.0476v1

Physics

Quantum Physics

12 pages, 7 figures, submitted to Phys. Rev. A

Scientific paper

10.1103/PhysRevA.76.033615

We investigate the geometric phase of an atom inside an adiabatic radio frequency (rf) potential created from a static magnetic field (B-field) and a time dependent rf field. The spatial motion of the atomic center of mass is shown to give rise to a geometric phase, or Berry's phase, to the adiabatically evolving atomic hyperfine spin along the local B-field. This phase is found to depend on both the static B-field along the semi-classical trajectory of the atomic center of mass and an ``effective magnetic field'' of the total B-field, including the oscillating rf field. Specific calculations are provided for several recent atom interferometry experiments and proposals utilizing adiabatic rf potentials.

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