Optimal trapping wavelengths of Cs${}_2$ molecules in an optical lattice

Abstract

The present paper aims at finding optimal parameters for trapping of Cs${}_2$ molecules in optical lattices, with the perspective of creating a quantum degenerate gas of ground-state molecules. We have calculated dynamic polarizabilities of Cs${}_2$ molecules subject to an oscillating electric field, using accurate potential curves and electronic transition dipole moments. We show that for some particular wavelengths of the optical lattice, called "magic wavelengths", the polarizability of the ground-state molecules is equal to the one of a Feshbach molecule. As the creation of the sample of ground-state molecules relies on an adiabatic population transfer from weakly-bound molecules created on a Feshbach resonance, such a coincidence ensures that both the initial and final states are favorably trapped by the lattice light, allowing optimized transfer in agreement with the experimental observation.

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• Optimal trapping wavelengths of Cs${}_2$ molecules in an optical lattice

Cited by in corpus (9)

• Production of a dual-species Bose-Einstein condensate of Rb and Cs atoms
• Anisotropic optical trapping of ultracold erbium atoms
• Theory of long-range ultracold atom-molecule photoassociation
• Optimal trapping wavelengths of Cs${}_2$ molecules in an optical lattice
• Polarizability of ultracold ${\text{Rb}}_2$ molecules in the rovibrational ground state of ${\mathrm{a}}^3{\Sigma }_u^{+}$
• Lattice model parameters for ultracold nonreactive molecules: chaotic scattering and its limitations
• Triatomic Photoassociation in an Ultracold Atom-Molecule Collision
• Pendular trapping conditions for ultracold polar molecules enforced by external electric fields
• Delta-Kick Collimation of Heteronuclear Feshbach Molecules