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arXiv · 0804.3011

Cross-Molecular Coupling in Combined Photoassociation and Feshbach Resonances

Matt Mackie·Matthew Fenty·Danielle Savage·Jake Kesselman
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Abstract

We model combined photoassociation and Feshbach resonances in a Bose-Einstein condensate. When the magnetic field is far-off resonance, cross coupling between the two target molecules--enabled by the shared dissociation continuum--leads to an anomalous dispersive shift in the position of laser resonance, as well as unprecedented elimination and enhancement of resonant photoassociation via quantum interference. For off-resonant lasers, a dispersive shift and quantum interference appear similarly in resonant three-body Feshbach losses, except that the Feshbach node is tunable with intensity.

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Matt Mackie, Matthew Fenty, Danielle Savage, Jake Kesselman. 2008-07-16. Cross-Molecular Coupling in Combined Photoassociation and Feshbach Resonances. https://doi.org/10.1103/physrevlett.101.040401

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