Molecule Formation in Optical Lattice Wells by Resonantly Modulated Magnetic Fields

Abstract

We present a theoretical model for formation of molecules in an optical lattice well where a resonant coupling of atomic and molecular states is provided by small oscillations of a magnetic field in the vicinity of a Feshbach resonance. As opposed to an adiabatic sweep over the full resonance, this provides a coherent coupling with a frequency that can be tuned to meet resonance conditions in the system. The effective Rabi frequencies for this coupling are calculated and simulations show perfect Rabi oscillations. Robust production of molecules with an adiabatic sweep of the modulation frequency is demonstrated. For very large oscillation amplitudes, the Rabi oscillations are distorted but still effective and fast association is possible.

5 pages, 6 figures

References in corpus (4)

• Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
• Observation of molecules produced from a Bose-Einstein condensate
• Formation of Quantum-Degenerate Sodium Molecules
• Characterization of elastic scattering near a Feshbach resonance in rubidium 87

Cited by in corpus (5)

• Observation of Heteronuclear Feshbach Molecules from a ${}^{85}$Rb - ${}^{87}$Rb gas
• Association of molecules using a resonantly modulated magnetic field
• Multipole Analysis of Radio-Frequency Reactions in Ultra-Cold Atoms
• Dynamics of small trapped one-dimensional Fermi gas under oscillating magnetic fields
• Feshbach molecule formation through an oscillating magnetic field: subharmonic resonances