Highly spin-polarized molecules via collisional microwave pumping

Abstract

We propose a general technique to produce cold spin-polarized molecules, in which rotationally excited states are first populated by coherent microwave excitation, and then allowed to spin-flip and relax via collisional quenching, which populates a single final spin state. We illustrate the high selectivity of the technique for ${}^{13}$C${}^{16}$O molecules immersed in a cold buffer gas of helium atoms, achieving a high degree ($\ge$95\%) of nuclear spin polarization at 1 K.

References in corpus (45)

• The Physical Implementation of Quantum Computation
• Cold and Ultracold Molecules: Science, Technology, and Applications
• Stimulated Raman adiabatic passage in physics, chemistry and beyond
• Laser cooling of a diatomic molecule
• Cold molecules: Progress in Quantum Engineering of Chemistry and Quantum Matter
• Magneto-optical trapping of a diatomic molecule
• The Buffer Gas Beam: An Intense, Cold, and Slow Source for Atoms and Molecules
• Molecules cooled below the Doppler limit
• Optical pumping and vibrational cooling of molecules
• Laser Cooling of Optically Trapped Molecules
• Magneto-Optical Trap for Polar Molecules
• High-flux beam source for cold, slow atoms or molecules
• Magneto-Optical Trapping and Sub-Doppler Cooling of a Polyatomic Molecule
• Optically Polarized ${}^3$He
• Magnetic trapping and Zeeman relaxation of imidogen (NH X-triplet-Sigma)
• Magnetically-Trapped Molecules Efficiently Loaded from a Molecular MOT
• Quantum state resolution of the C${}_{60}$ fullerene
• Bimolecular chemistry in the ultracold regime
• Hyperpolarization-enhanced NMR spectroscopy with femtomole sensitivity using quantum defects in diamond
• Intense Atomic and Molecular Beams via Neon Buffer Gas Cooling
• Collisions between cold molecules in a superconducting magnetic trap
• Rovibrational cooling of molecules by optical pumping
• Orientation-dependent hyperfine structure of polar molecules in a rare-gas matrix: a scheme for measuring the electron electric dipole moment
• Magnetic Trapping of Cold Methyl Radicals
• Oriented polar molecules in a solid inert-gas matrix: a proposed method for measuring the electric dipole moment of the electron
• High Phase-Space Density of Laser-Cooled Molecules in an Optical Lattice
• Mechanism of Collisional Spin Relaxation in Triplet-Sigma Molecules
• Quantum Optimal Control of Nuclear Spin Qudecimals in ${}^{87}\text{Sr}$
• High-resolution optical spectroscopy with a buffer-gas-cooled beam of BaH molecules
• Proposal for a sensitive search for electric dipole moment of electron with matrix-isolated radicals
• Optical cycling of AlF molecules
• Quantum state resolved molecular dipolar collisions over four decades of energy
• Sympathetic cooling of polyatomic molecules with S-state atoms in a magnetic trap
• High Sensitivity Microwave Spectroscopy in a Cryogenic Buffer Gas Cell
• Spectroscopy on the $A^1\Pi \leftarrow X^1{\Sigma }^{+}$ Transition of Buffer-Gas Cooled AlCl
• Dynamics of OH(2Pi)-He collisions in combined electric and magnetic fields
• Multistage Zeeman deceleration of atomic and molecular oxygen
• Robust nuclear spin entanglement via dipolar interactions in polar molecules
• Theory of cavity-assisted microwave cooling of polar molecules
• Precisely Spun Super Rotors
• BaF molecules in neon ice: trapping, spectroscopy and optical control of electron spins
• Collision-induced C_60 rovibrational relaxation probed by state-resolved nonlinear spectroscopy
• Low-energy collisions between carbon atoms and oxygen molecules in a magnetic trap
• Nuclear spin relaxation in cold atom-molecule collisions
• Features of Molecular Structure Beneficial for Optical Pumping