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Optical tuning of the scattering length of cold alkaline earth atoms | | R. Ciurylo
; E. Tiesinga
; P. S. Julienne
; | | Date: |
17 Dec 2004 | | Subject: | Atomic Physics | physics.atom-ph | | Abstract: | It is possible to tune the scattering length for the collision of ultra-cold 1S0 ground state alkaline-earth atoms using an optical Feshbach resonance. This is achieved with a laser far detuned from an excited molecular level near the frequency of the atomic intercombination 1S0--3P1 transition. Simple resonant scattering theory, illustrated by the example of 40Ca, allows an estimate of the magnitude of the effect. Unlike alkali metal species, large changes of the scattering length are possible while atom loss remains small, because of the very narrow line width of the molecular photoassociation transition. This raises prospects for control of atomic interactions for a system without magnetically tunable Feshbach resonance levels. | | Source: | arXiv, physics/0412111 | | Services: | Forum | Review | PDF | Favorites | |
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