Long-range interactions between polar alkali-metal diatoms in external electric fields

Abstract

We computed the long-range interactions between two identical polar bialkali molecules in their rovibronic ground level, for all ten species involving Li, Na, K, Rb and Cs, using accurate quantum chemistry results combined with available spectroscopic data. Huge van der Waals interaction is found for eight species in free space. The competition of the van der Waals interaction with the dipole-dipole interaction induced by an external electric field parallel or perpendicular to the intermolecular axis is investigated by varying the electric field magnitude and the intermolecular distance. Our calculations predict a regime with the mutual orientation of the two molecules but with no preferential direction in the laboratory frame. A mechanism for the stimulated one-photon radiative association of a pair of ultracold polar molecules into ultracold tetramers is proposed, which would open the way towards the optical manipulation of ultracold polyatomic molecules.

9 pages, 5 figures

References in corpus (18)

• A High Phase-Space-Density Gas of Polar Molecules
• Spin-orbit coupling in quantum gases
• Laser-induced alignment and orientation of quantum-state-selected large molecules
• Reactions of ultracold alkali metal dimers
• Cold polar molecules in 2D traps: Tailoring interactions with external fields for novel quantum phases
• Ultracold Fermionic Feshbach Molecules of ${}^{23}$Na${}^{40}$K
• Calculations of static dipole polarizabilities of alkali dimers. Prospects for alignment of ultracold molecules
• The X${}^1{\Sigma }^{+}$ and a${}^3{\Sigma }^{+}$ states of LiCs studied by Fourier-transform spectroscopy
• The coupling of the X${}^1{\Sigma }^{+}$ and a${}^3{\Sigma }^{+}$ states of KRb
• Strong dependence of ultracold chemical rates on electric dipole moments
• Observation of interspecies Li-Cs Feshbach resonances
• Ultracold mixtures of atomic Li-6 and Cs-133 with tunable interactions
• Electric field suppression of ultracold confined chemical rates
• Making the best of mixed-field orientation of polar molecules: A recipe for achieving adiabatic dynamics in an electrostatic field combined with laser pulses
• Van der Waals coefficients for systems with ultracold polar alkali-metal molecules
• Long-range interactions in the ozone molecule: spectroscopic and dynamical points of view
• Long range forces between polar alkali diatoms aligned by external electric fields
• Controllable binding of polar molecules and meta-stability of 1-D gases with attractive dipole forces

Cited by in corpus (28)

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• Creation of an ultracold gas of ground-state ${}^{23}{\mathrm{Na}}^{87}\mathrm{Rb}$ molecules
• Collisions of ultracold ^{23}Na^{87}Rb molecules with controlled chemical reactivities
• Collisions of ultracold molecules in bright and dark optical dipole traps
• Coherent Microwave Control of Ultracold ${}^{23}$Na${}^{40}$K Molecules
• Microwave shielding of bosonic NaRb molecules
• Adimensional theory of shielding in ultracold collisions of dipolar rotors
• Tuning ultracold collisions of excited rotational dipolar molecules
• Dipolar Collisions of Ultracold Ground-state Bosonic Molecules
• Optical shielding of destructive chemical reactions between ultracold ground-state NaRb molecules
• Optical trapping of ultracold dysprosium atoms: transition probabilities, dynamic dipole polarizabilities and van der Waals $C_6$ coefficients
• Ultracold field-linked tetratomic molecules
• Electro-association of ultracold dipolar molecules into tetramer field-linked states
• SU(N) magnetism with ultracold molecules
• Polarizability of ultracold ${\text{Rb}}_2$ molecules in the rovibrational ground state of ${\mathrm{a}}^3{\Sigma }_u^{+}$
• Entanglement via rotational blockade of MgF molecules in a magic potential
• Two-photon optical shielding of collisions between ultracold polar molecules
• Controlling collisional loss and scattering lengths of ultracold dipolar molecules with static electric fields
• Electric field dependence of complex-dominated ultracold molecular collisions
• Controlling the s-wave scattering length with non-resonant light: Predictions of an asymptotic model
• SU($N$) symmetry with ultracold alkali dimers: weak dependence of scattering properties on hyperfine state
• Controlling ultracold $p$-wave collisions with non-resonant light: Predictions of an asymptotic model for the generalized scattering volume
• A Comparative Analysis of Non-relativistic and Relativistic Calculations of Electric Dipole Moments and Polarizabilities of Heteronuclear Alkali Dimers
• Ultracold Interactions between Ions and Polar Molecules
• Rotational properties of two interacting cold polar molecules: linear, symmetric, and asymmetric tops
• Quasi-1D ultracold rigid-rotor collisions : reactive and non-reactive cases
• Model for two-body collisions between ultracold dipolar molecules around a Förster resonance in an electric field
• Strongly dipolar molecular Bose-Einstein condensates: From few- to many-body physics