Dynamics of ultracold molecules in confined geometry and electric field

Abstract

We present a time-independent quantum formalism to describe the dynamics of molecules with permanent electric dipole moments in a two-dimensional confined geometry such as a one-dimensional optical lattice, in the presence of an electric field. Bose/Fermi statistics and selection rules play a crucial role in the dynamics. As examples, we compare the dynamics of confined fermionic and bosonic polar KRb molecules under different confinements and electric fields. We show how chemical reactions can be suppressed, either by a "statistical suppression" which applies for fermions at small electric fields and confinements, or by a "potential energy suppression", which applies for both fermions and bosons at high electric fields and confinements. We also explore collisions that transfer molecules from one state of the confining potential to another. Although these collisions can be significant, we show that they do not play a role in the loss of the total number of molecules in the gas.

13 pages, 6 figures

References in corpus (8)

• A High Phase-Space-Density Gas of Polar Molecules
• Strongly correlated 2D quantum phases with cold polar molecules: controlling the shape of the interaction potential
• Schemes for robust quantum computation with polar molecules
• Reactions of ultracold alkali metal dimers
• Cold polar molecules in 2D traps: Tailoring interactions with external fields for novel quantum phases
• Universal rates for reactive ultracold polar molecules in reduced dimensions
• Strong dependence of ultracold chemical rates on electric dipole moments
• Electric field suppression of ultracold confined chemical rates

Cited by in corpus (16)

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• Reactive collisions in confined geometries
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• Electro-association of ultracold dipolar molecules into tetramer field-linked states
• Shielding collisions of ultracold CaF molecules with static electric fields
• Electric-field-controlled cold dipolar collisions between trapped CH${}_3$F molecules
• Four-body singlet potential energy surface for reactions of calcium monofluoride
• Can the dipolar interaction suppress dipolar relaxation?
• Ultracold Interactions between Ions and Polar Molecules
• Averaged collision and reaction rates in a two-species gas of ultracold fermions
• Strongly dipolar molecular Bose-Einstein condensates: From few- to many-body physics
• Model for two-body collisions between ultracold dipolar molecules around a Förster resonance in an electric field