Imaging-based Parametric Resonance in an Optical Dipole Atom Trap

Details Imaging-based Parametric Resonance in an Optical Dipole Atom Trap Imaging-based Parametric Resonance in an Optical Dipole Atom Trap

2009-08-03

arxiv.org/abs/0908.0263v2

PHYSICAL REVIEW A 80, 023404 (2009)

Physics

Quantum Physics

Scientific paper

We report sensitive detection of parametric resonances in a high-density sample of ultracold $^{87}Rb$ atoms confined to a far-off-resonance optical dipole trap. Fluorescence imaging of the expanded ultracold atom cloud after a period of parametric excitation shows significant modification of the atomic spatial distribution and has high sensitivity compared with traditional measurements of parametrically-driven trap loss. Using this approach, a significant shift of the parametric resonance frequency is observed, and attributed to the anharmonic shape of the dipole trap potential.

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