Formation of molecules and entangled atomic pairs from atomic BEC due to Feshbach resonance

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dc.creatorYurovsky, Vladimir A.
dc.date2006-11-02
dc.date2006-11-14
dc.date.accessioned2026-07-07T07:31:11Z
dc.date.available2026-07-07T07:31:11Z
dc.descriptionBose-Einstein condensate (BEC) is considered under conditions of Feshbach resonance in two-atom collisions due to a coupling of atomic pair and resonant molecular states. The association of condensate atoms can form a molecular BEC, and the molecules can dissociate to pairs of entangled atoms in two-mode squeezed states. Both entanglement and squeezing can be applied to quantum measurements and information processing. The processes in the atom-molecule quantum gas are analyzed using two theoretical approaches. The mean-field one takes into account deactivating collisions of resonant molecules with other atoms and molecules, neglecting quantum fluctuations. This method allows analysis of inhomogeneous systems, such as expanding BEC. The non-mean-field approach -- the parametric approximation -- takes into account both deactivation and quantum fluctuations. This method allows determination of optimal conditions for formation of molecular BEC and describes Bose-enhanced dissociation of molecular BEC, as well as entanglement and squeezing of the non-condensate atoms.
dc.description34 pages, 15 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0611054
dc.identifierhttp://arxiv.org/abs/cond-mat/0611054
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/118660
dc.subjectSoft Condensed Matter
dc.titleFormation of molecules and entangled atomic pairs from atomic BEC due to Feshbach resonance
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