Formation of a molecular Bose-Einstein condensate and an entangled atomic gas by Feshbach resonance

Abstract

Processes of association in an atomic Bose-Einstein condensate, and dissociation of the resulting molecular condensate, due to Feshbach resonance in a time-dependent magnetic field, are analyzed incorporating non-mean-field quantum corrections and inelastic collisions. Calculations for the Na atomic condensate demonstrate that there exist optimal conditions under which about 80% of the atomic population can be converted to a relatively long-lived molecular condensate (with lifetimes of 10 ms and more). Entangled atoms in two-mode squeezed states (with noise reduction of about 30 dB) may also be formed by molecular dissociation. A gas of atoms in squeezed or entangled states can have applications in quantum computing, communications, and measurements.

LaTeX, 5 pages with 4 figures, uses REVTeX4

Cited by in corpus (8)

• Observation of molecules produced from a Bose-Einstein condensate
• Formation of Quantum-Degenerate Sodium Molecules
• Adiabatic association of ultracold molecules via magnetic field tunable interactions
• Improved efficiency of stimulated Raman adiabatic passage in photoassociation of a Bose-Einstein condensate
• Formation of molecules from a Cs Bose-Einstein condensate
• Formation of molecules in an expanding Bose-Einstein condensate
• Atom loss from the ${}^{85}$Rb Bose-Einstein condensate by a Feshbach resonance
• Ultracold Fermion Cooling Cycle using Heteronuclear Feshbach Resonances