Electric field suppression of ultracold confined chemical rates

Abstract

We consider ultracold collisions of polar molecules confined in a one dimensional optical lattice. Using a quantum scattering formalism and a frame transformation method, we calculate elastic and chemical quenching rate constants for fermionic molecules. Taking KRb molecules as a prototype, we find that the rate of quenching collisions is enhanced at zero electric field as the confinement is increased, but that this rate is suppressed when the electric field is turned on. For molecules with 500 nK of collision energy, for realistic molecular densities, and for achievable experimental electric fields and trap confinements, we predict lifetimes of KRb molecules of 1 s. We find a ratio of elastic to quenching collision rates of about 100, which may be sufficient to achieve efficient experimental evaporative cooling of polar KRb molecules.

arXiv comment4 pages, 3 figures

References in corpus (18)

• A High Phase-Space-Density Gas of Polar Molecules
• Quantum computation with trapped polar molecules
• Cold and Ultracold Molecules: Science, Technology, and Applications
• A toolbox for lattice spin models with polar molecules
• Quantum-State Controlled Chemical Reactions of Ultracold KRb Molecules
• Formation of ultracold polar molecules in the rovibrational ground state
• Dipolar collisions of polar molecules in the quantum regime
• Optical Production of Ultracold Polar Molecules
• Strongly correlated 2D quantum phases with cold polar molecules: controlling the shape of the interaction potential
• Interatomic collisions in a tightly confined Bose gas
• Schemes for robust quantum computation with polar molecules
• Controlling the hyperfine state of rovibronic ground-state polar molecules
• Cold polar molecules in 2D traps: Tailoring interactions with external fields for novel quantum phases
• Strong dependence of ultracold chemical rates on electric dipole moments
• 2-Dimensional Dipolar Scattering
• Quasi-two dimensional dipolar scattering
• Optical Feshbach resonances of Alkaline-Earth atoms in a 1D or 2D optical lattice
• Inelastic Collisions in an Ultracold quasi-2D Gas

Cited by in corpus (44)

• Condensed Matter Theory of Dipolar Quantum Gases
• Controlling the quantum stereodynamics of ultracold bimolecular reactions
• Manipulation of Molecules with Electromagnetic Fields
• Stable dilute supersolid of two-dimensional dipolar bosons
• Production of a dual-species Bose-Einstein condensate of Rb and Cs atoms
• Universal rates for reactive ultracold polar molecules in reduced dimensions
• Three-Body Interacting Bosons in Free Space
• Ultracold Dipolar Molecules Composed of Strongly Magnetic Atoms
• Topological p_x+ip_y Superfluid Phase of Fermionic Polar Molecules
• Universal ultracold collision rates for polar molecules of two alkali-metal atoms
• Collisions of ultracold molecules in bright and dark optical dipole traps
• Self-bound dipolar droplets and supersolids in molecular Bose-Einstein condensates
• 1D Quantum Liquids with Power-Law Interactions: a Luttinger Staircase with Polar Molecules
• Dynamics of ultracold molecules in confined geometry and electric field
• Universalities in ultracold reactions of alkali polar molecules
• Collective modes, stability and superfluid transition of a quasi-two-dimensional dipolar Fermi gas
• Tuning ultracold collisions of excited rotational dipolar molecules
• Reactions Between Layer-Resolved Molecules Mediated by Dipolar Exchange
• Long-range interactions between polar alkali-metal diatoms in external electric fields
• Novel Fermi Liquid of 2D Polar Molecules
• Statistical product distributions for ultracold reactions in external fields
• Emergent structure in a dipolar Bose gas in a one-dimensional lattice
• Evaporative cooling of reactive polar molecules confined in a two-dimensional geometry
• Reactive collisions in confined geometries
• Three-body interaction near a narrow two-body zero crossing
• Collisional Aspects of Bosonic and Fermionic Dipoles in Quasi-Two-Dimensional Confining Geometries
• Two dimensional dipolar scattering with a tilt
• Universal bound and scattering properties for two dipoles
• Resonant control of polar molecules in an optical lattice
• Classical approach to collision complexes in ultracold chemical reactions
• Zero sound in a two-dimensional dipolar Fermi gas
• Dynamics of ultracold dipolar particles in a confined geometry and tilted fields
• Fulde-Ferrell-Larkin-Ovchinnikov state in bilayer dipolar systems
• Ultracold collisions between two light indistinguishable diatomic molecules: elastic and rotational energy transfer in HD+HD
• Reactive collisions of two ultracold particles in a harmonic trap
• Engineering long-range interactions between ultracold atoms with light
• Ultracold and dense samples of ground-state molecules in lattice potentials
• Giant enhancement of photodissociation of polar dimers in electric fields
• Quantum Degenerate Majorana Surface Zero Modes in Two-Dimensional Space
• Ultracold coherent control of molecular collisions at a Förster resonance
• Quantum reactive scattering in the long-range ion-dipole potential
• Strongly dipolar molecular Bose-Einstein condensates: From few- to many-body physics
• Formation of ultracold triatomic molecules by electric microwave association
• Model for two-body collisions between ultracold dipolar molecules around a Förster resonance in an electric field