Cross-molecular coupling in combined photoassociation and Feshbach resonances |
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Authors: | Mackie Matt Fenty Matthew Savage Danielle Kesselman Jake |
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Affiliation: | Department of Physics, Temple University, Philadelphia, Pennsylvania 19122, USA. |
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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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