Rotational properties of two interacting cold polar molecules: linear, symmetric, and asymmetric tops

Abstract

We examine the potential-energy curves and polarization of the dipole moments of two static polar molecules under the influence of an external dc electric field and their anisotropic dipole-dipole interaction. We model the molecules as quantum rigid rotors to take their rotational degrees of freedom into account and consider a selection of linear, symmetric, and asymmetric top molecules. We provide a comprehensive examination of the energy curves and polarization of the dipoles for varying inter-molecular separation and direction of the electric field and find that the properties of the molecules depend strongly on the field's direction at short separations, showing the importance of accounting for molecular rotation. The latter provides insight into the possible effects of accounting for rotational degrees of freedom in molecular dipolar gases.

arXiv commentAccepted version. 19 pages, 13 figures

References in corpus (72)

• A High Phase-Space-Density Gas of Polar Molecules
• The physics of dipolar bosonic quantum gases
• Quantum computation with trapped polar molecules
• Cold and Ultracold Molecules: Science, Technology, and Applications
• Order of Magnitude Smaller Limit on the Electric Dipole Moment of the Electron
• Realizing a lattice spin model with polar molecules
• Condensed Matter Theory of Dipolar Quantum Gases
• Dipolar collisions of polar molecules in the quantum regime
• Ultracold dense samples of dipolar RbCs molecules in the rovibrational and hyperfine ground state
• Ultracold Dipolar Gas of Fermionic ${}^{23}$Na${}^{40}$K Molecules in their Absolute Ground State
• Cold molecules: Progress in Quantum Engineering of Chemistry and Quantum Matter
• Creation of ultracold ${}^{87}$RbCs molecules in the rovibrational ground state
• Molecules cooled below the Doppler limit
• Creation of an ultracold gas of ground-state ${}^{23}{\mathrm{Na}}^{87}\mathrm{Rb}$ molecules
• Quantum control of molecular rotation
• Tunable Superfluidity and Quantum Magnetism with Ultracold Polar Molecules
• A new bound on the electron's electric dipole moment
• Schemes for robust quantum computation with polar molecules
• A Fermi Degenerate Gas of Polar Molecules
• Sisyphus Laser Cooling of a Polyatomic Molecule
• New frontiers with quantum gases of polar molecules
• Laser Cooling of Optically Trapped Molecules
• Cold polar molecules in 2D traps: Tailoring interactions with external fields for novel quantum phases
• Ultracold molecules for measuring the electron's electric dipole moment
• Dipolar Exchange Quantum Logic Gate with Polar Molecules
• Magneto-Optical Trapping and Sub-Doppler Cooling of a Polyatomic Molecule
• Direct Laser Cooling of a Symmetric Top Molecule
• Sub-millikelvin dipolar molecules in a radio-frequency magneto-optical trap
• Observation of Bose-Einstein Condensation of Dipolar Molecules
• Laser-Cooled Polyatomic Molecules for Improved Electron Electric Dipole Moment Searches
• Polyatomic candidates for cooling of molecules with lasers from simple theoretical concepts
• On-Demand Entanglement of Molecules in a Reconfigurable Optical Tweezer Array
• Microwave shielding of ultracold polar molecules
• Second-Scale Nuclear Spin Coherence Time of Trapped Ultracold ${}^{23}$Na${}^{40}$K Molecules
• Assembly of a rovibrational ground state molecule in an optical tweezer
• Polyatomic Molecules as Quantum Sensors for Fundamental Physics
• Probing site-resolved correlations in a spin system of ultracold molecules
• Dipolar evaporation of reactive molecules to below the Fermi temperature
• Controlling the scattering length of ultracold dipolar molecules
• Density wave and supersolid phases of correlated bosons in an optical lattice
• Quantum state manipulation and cooling of ultracold molecules
• Sub-Doppler Cooling and Compressed Trapping of YO Molecules at $\mu$K Temperatures
• Laser cooling of molecules
• A Scalable Quantum Computing Platform Using Symmetric-Top Molecules
• Rotational Coherence Times of Polar Molecules in Optical Tweezers
• Universal ultracold collision rates for polar molecules of two alkali-metal atoms
• Molecular Asymmetry and Optical Cycling: Laser Cooling Asymmetric Top Molecules
• Selective Orientation of Chiral Molecules by Laser Fields with Twisted Polarization
• Realizing unconventional quantum magnetism with symmetric top molecules
• Dipolar quantum logic for freely-rotating trapped molecular ions
• Entanglement of polar molecules in pendular states
• Tunable Holstein model with cold polar molecules
• Tuning ultracold collisions of excited rotational dipolar molecules
• Quantum control of molecules for fundamental physics
• Infrared-dressed entanglement of cold open-shell polar molecules for universal matchgate quantum computing
• Emergent Time Scale in Entangled Quantum Dynamics of Ultracold Molecules in Optical Lattices
• Simulating quantum magnets with symmetric top molecules
• Long-range interactions between polar alkali-metal diatoms in external electric fields
• Optical shielding of destructive chemical reactions between ultracold ground-state NaRb molecules
• Enhanced quantum control of individual ultracold molecules using optical tweezer arrays
• Improved setup for producing slow beams of cold molecules using a rotating nozzle
• Controlling the ac Stark effect of RbCs with dc electric and magnetic fields
• Characterizing the Fundamental Bending Vibration of a Linear Polyatomic Molecule for Symmetry Violation Searches
• Ultracold nonreactive molecules in an optical lattice: connecting chemistry to many-body physics
• Chiral Rotational Spectroscopy
• Two interacting ultracold molecules in a one-dimensional harmonic trap
• Controllable binding of polar molecules and meta-stability of 1-D gases with attractive dipole forces
• Microscopic derivation of multi-channel Hubbard models for ultracold nonreactive molecules in an optical lattice
• Controlling the dynamics of ultracold polar molecules in optical tweezers
• Rotational-state dependence of interactions between polar molecules
• Magnetic properties and quench dynamics of two interacting ultracold molecules in a trap
• Electric dipoles vs. magnetic dipoles - for two molecules in a harmonic trap