Generalized Parametric Approximation and a Hybrid Atom-Molecule Quantum Gas

V. A. Yurovsky, A. Ben-Reuven

Research output: Contribution to journalArticlepeer-review


An approximate method, treating the molecular field as a mean field and the atomic field as a second-quantized field, is applied to association in an atomic Bose-Einstein condensate and dissociation of the resulting molecular condensate, due to Feshbach resonance in a time-dependent magnetic field. The model takes into account inelastic collisions of the resonant molecules. An adaptation of the Heisenberg-Langevin formalism to matter fields is used to eliminate the molecular "dump" states of the collisions. Conditions are studied for converting an atomic BEC to a metastable molecular BEC with optimal lifetimes and for maximal production of a gas of entangled atoms in a two-mode squeezed state as a result of the molecular dissociation.

Original languageEnglish
Pages (from-to)1095-1101
Number of pages7
JournalLaser Physics
Issue number8
StatePublished - Aug 2003


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