Blue-Detuned Magneto-Optical Trap of Molecules

Abstract

Direct laser cooling of molecules has reached a phase space density exceeding 10${}^{-6}$ in optical traps, but with rather small molecular numbers. To progress towards quantum degeneracy, a mechanism is needed that combines sub-Doppler cooling and magneto-optical trapping (MOT) to facilitate near unity transfer of ultracold molecules from the MOT to a conservative optical trap. Using the unique energy level structure of YO molecules, we demonstrate the first blue-detuned MOT for molecules that is optimized for both gray-molasses sub-Doppler cooling and relatively strong trapping forces. This first sub-Doppler molecular MOT provides an increase of phase-space density by two orders of magnitude over any previously reported molecular MOT.

6 pages, 6 figures

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Cited by in corpus (24)

• Quantum state manipulation and cooling of ultracold molecules
• Three-dimensional Magneto-optical Trapping of Barium Monofluoride
• High density loading and collisional loss of laser cooled molecules in an optical trap
• Magneto-optical trapping of a heavy polyatomic molecule for precision measurement
• A Blue-Detuned Magneto-Optical Trap of CaF Molecules
• Intensity-borrowing mechanisms pertinent to laser cooling of linear polyatomic molecules
• Three-Body Recombination of Ultracold Microwave-Shielded Polar Molecules
• General classification of qubit encodings in ultracold diatomic molecules
• Simulations of a frequency-chirped magneto-optical trap of MgF
• Magneto-optical trapping of aluminum monofluoride
• Collisions of Spin-polarized YO Molecules for Single Partial Waves
• Hyperfine structure of the ${\mathbf{A}}^1\mathbf{\Pi }$ state of AlCl and its relevance to laser cooling and trapping
• Ultracold molecular collisions in magnetic fields: Efficient incorporation of hyperfine structure in the total rotational angular momentum representation
• Molecular laser cooling using serrodynes: Implementation, characterization and prospects
• Role of spontaneously generated coherence (SGC) in laser cooling of atoms
• Efficient cooling of high-angular-momentum atoms
• Magneto-Optical Trapping of a Metal Hydride Molecule
• Spin--spin interaction and magnetic Feshbach resonances in collisions of high-spin atoms with closed-shell atoms
• Single-photon loading of polar molecules into an optical trap
• Rigorous quantum calculations for atom-molecule chemical reactions in electric fields: from single to multiple partial wave regimes
• Simulated Laser Cooling and Magneto-Optical Trapping of Group IV Atoms
• Narrowline Laser Cooling and Spectroscopy of Molecules via Stark States
• High-sensitivity molecular spectroscopy of SrOH using magneto-optical trapping
• Strongly dipolar molecular Bose-Einstein condensates: From few- to many-body physics