Measurement of optical Feshbach resonances in an ideal gas
Using a narrow intercombination line in alkaline earth atoms to mitigate large inelastic losses, we explore the optical Feshbach resonance effect in an ultracold gas of bosonic (88)Sr. A systematic measurement of three resonances allows precise determinations of the optical Feshbach resonance streng...
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Published in | Physical review letters Vol. 107; no. 7; p. 073202 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
United States
12.08.2011
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Online Access | Get more information |
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Summary: | Using a narrow intercombination line in alkaline earth atoms to mitigate large inelastic losses, we explore the optical Feshbach resonance effect in an ultracold gas of bosonic (88)Sr. A systematic measurement of three resonances allows precise determinations of the optical Feshbach resonance strength and scaling law, in agreement with coupled-channel theory. Resonant enhancement of the complex scattering length leads to thermalization mediated by elastic and inelastic collisions in an otherwise ideal gas. Optical Feshbach resonance could be used to control atomic interactions with high spatial and temporal resolution. |
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ISSN: | 1079-7114 |
DOI: | 10.1103/physrevlett.107.073202 |