Shielding ${}^2\Sigma$ ultracold dipolar molecular collisions with electric fields

Abstract

The prospects for shielding ultracold, paramagnetic, dipolar molecules from inelastic and chemical collisions are investigated. Molecules placed in their first rotationally excited states are found to exhibit effective long-range repulsion for applied electric fields above a certain critical value, as previously shown for non-paramagnetic molecules. This repulsion can safely allow the molecules to scatter while reducing the risk of inelastic or chemically reactive collisions. Several molecular species of ${}^2\Sigma$ molecules of experimental interest -- RbSr, SrF, BaF, and YO -- are considered, and all are shown to exhibit orders of magnitude suppression in quenching rates in a sufficiently strong laboratory electric field. It is further shown that, for these molecules described by Hund's coupling case b, electronic and nuclear spins play the role of spectator with respect to the shielding.

9 pages, 8 figures

References in corpus (12)

• A High Phase-Space-Density Gas of Polar Molecules
• Magneto-optical trapping of a diatomic molecule
• Quantum Gas of Deeply Bound Ground State Molecules
• Repulsive shield between polar molecules
• Rotational state microwave mixing for laser cooling of complex diatomic molecules
• Ultracold Dipolar Molecules Composed of Strongly Magnetic Atoms
• Cold N+NH Collisions in a Magnetic Trap
• Dynamics of ultracold molecules in confined geometry and electric field
• Improved magneto-optical trapping of a diatomic molecule
• Tuning ultracold collisions of excited rotational dipolar molecules
• Prospects for a Narrow Line MOT in YO
• Dynamics of ultracold dipolar particles in a confined geometry and tilted fields

Cited by in corpus (45)

• Creation of an ultracold gas of ground-state ${}^{23}{\mathrm{Na}}^{87}\mathrm{Rb}$ molecules
• Laser Cooling of Optically Trapped Molecules
• Resonant collisional shielding of reactive molecules using electric fields
• Observation of Collisions between Two Ultracold Ground-State CaF Molecules
• Laser cooled molecules
• Self-bound dipolar droplets and supersolids in molecular Bose-Einstein condensates
• Coherent Microwave Control of Ultracold ${}^{23}$Na${}^{40}$K Molecules
• Adimensional theory of shielding in ultracold collisions of dipolar rotors
• High-resolution Internal State Control of Ultracold ${}^{23}$Na${}^{87}$Rb Molecules
• Two-photon photoassociation spectroscopy of CsYb: ground-state interaction potential and interspecies scattering lengths
• Complete quantum coherent control of ultracold molecular collisions
• Observation of generalized t-J spin dynamics with tunable dipolar interactions
• Microwave shielding with far-from-circular polarization
• Controlling Spin-flips of Molecules in an Electromagnetic Trap
• Spectroscopy of YO from first principles
• High density loading and collisional loss of laser cooled molecules in an optical trap
• Resonant and first-order dipolar interactions between ultracold molecules in static and microwave electric fields
• One dimensional magneto-optical compression of a cold CaF molecular beam
• Shielding collisions of ultracold CaF molecules with static electric fields
• Ab Initio Study of Chemical Reactions of Cold SrF and CaF Molecules with Alkali-Metal and Alkaline-Earth-Metal Atoms
• Ultracold rare-earth magnetic atoms with an electric dipole moment
• Two-photon optical shielding of collisions between ultracold polar molecules
• Four-body singlet potential energy surface for reactions of calcium monofluoride
• Lattice model parameters for ultracold nonreactive molecules: chaotic scattering and its limitations
• Controlling collisional loss and scattering lengths of ultracold dipolar molecules with static electric fields
• Observation of Microwave Shielding of Ultracold Molecules
• Rotational-state dependence of interactions between polar molecules
• ExoMol line lists -- LIII: Empirical Rovibronic spectra of Yttrium Oxide (YO)
• Experimental and theoretical study of the B(2)${}^2{\Sigma }^{+}\to$ X(1)${}^2{\Sigma }^{+}$ system in the KSr molecule
• Type-II Zeeman slowing: Characterization and comparison to conventional radiative beam slowing schemes
• SU($N$) symmetry with ultracold alkali dimers: weak dependence of scattering properties on hyperfine state
• Intercombination line photoassociation spectroscopy of ${}^{87}$Rb${}^{170}$Yb
• Purely long-range polar molecules composed of identical lanthanide atoms
• Engineering long-range interactions between ultracold atoms with light
• An Electro-Optical Trap for Polar Molecules
• The Li + CaF $\to$ Ca + LiF chemical reaction under cold conditions
• Magnetic Feshbach resonances between atoms in ${}^2$S and ${}^3$P${}_0$ states: mechanisms and dependence on atomic properties
• Can Nitric Oxide be Evaporatively Cooled in its Ground State?
• Hyperfine van der Waals repulsion between open-shell polar molecules
• Strongly dipolar molecular Bose-Einstein condensates: From few- to many-body physics
• Efimov Effect in Ultracold Microwave-Shielded Polar Molecules
• Quantum Degenerate Mixtures of Cs and Yb
• Ab initio study of the reactivity of ultracold RbSr$+$RbSr collisions
• Model for two-body collisions between ultracold dipolar molecules around a Förster resonance in an electric field
• Narrowline Laser Cooling and Spectroscopy of Molecules via Stark States