Deep laser cooling and efficient magnetic compression of molecules

Abstract

We introduce a scheme for deep laser cooling of molecules based on robust dark states at zero velocity. By simulating this scheme, we show it to be a widely applicable method that can reach the recoil limit or below. We demonstrate and characterise the method experimentally, reaching a temperature of 5.4(7) $\mu$K. We solve a general problem of measuring low temperatures for large clouds by rotating the phase-space distribution and then directly imaging the complete velocity distribution. Using the same phase-space rotation method, we rapidly compress the cloud. Applying the cooling method a second time, we compress both the position and velocity distributions.

arXiv comment9 pages, 7 figures

References in corpus (27)

• Search for New Physics with Atoms and Molecules
• Quantum computation with trapped polar molecules
• A toolbox for lattice spin models with polar molecules
• Laser cooling of a diatomic molecule
• Magneto-optical trapping of a diatomic molecule
• Molecules cooled below the Doppler limit
• Magneto-optical trapping of diatomic molecules
• Schemes for robust quantum computation with polar molecules
• Laser cooling and slowing of CaF molecules
• Sisyphus Laser Cooling of a Polyatomic Molecule
• Radio Frequency Magneto-Optical Trapping of CaF with High Density
• Laser Cooling of Optically Trapped Molecules
• 3-D Magneto-Optical Trap of Yttrium Monoxide
• Ultracold molecules for measuring the electron's electric dipole moment
• Matter wave lensing to picokelvin temperatures
• Optoelectrical cooling of polar molecules to sub-millikelvin temperatures
• Ultracold molecules for quantum simulation: rotational coherences in CaF and RbCs
• Ultracold Neutral Plasmas
• $\Lambda$-Enhanced Imaging of Molecules in an Optical Trap
• Λ-enhanced Sub-Doppler Cooling of Lithium Atoms in D1 Gray Molasses
• Magnetically-Trapped Molecules Efficiently Loaded from a Molecular MOT
• Magnetic trapping and coherent control of laser-cooled molecules
• Making, probing and understanding Bose-Einstein condensates
• Characteristics of a magneto-optical trap of molecules
• Three-dimensional Doppler, polarization-gradient, and magneto-optical forces for atoms and molecules with dark states
• Laser cooling and magneto-optical trapping of molecules analyzed using optical Bloch equations and the Fokker-Planck-Kramers equation
• Classical and Quantum Analysis of One Dimensional Velocity Selection for Ultracold Atoms

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• Sub-Doppler Cooling and Compressed Trapping of YO Molecules at $\mu$K Temperatures
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• Opportunities for Fundamental Physics Research with Radioactive Molecules
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• Direct laser cooling of calcium monohydride molecules
• Evidence for association of triatomic molecule in ultracold ${}^{23}$Na${}^{40}$K and ${}^{40}$K mixture
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• Sideband cooling of molecules in optical traps
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• Raman Sideband Cooling of Molecules in an Optical Tweezer Array
• Towards improved loading, cooling, and trapping of molecules in magneto-optical traps
• Molecular Collisions: from Near-cold to Ultra-cold
• Three-dimensional modeling magneto-optical trapping of MgF molecule with multilevel rate equations
• Enhancing dipolar interactions between molecules using state-dependent optical tweezer traps
• From megahertz to terahertz qubits encoded in molecular ions: theoretical analysis of dipole-forbidden spectroscopic transitions in N${}_2^{+}$
• Saturated absorption spectroscopy of buffer-gas-cooled Barium monofluoride molecules
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• Blackbody thermalization and vibrational lifetimes of trapped polyatomic molecules
• Intensity-borrowing mechanisms pertinent to laser cooling of linear polyatomic molecules
• Fast optical transport of ultracold molecules over long distances
• Laser cooling of barium monofluoride molecules using synthesized optical spectra
• Microwave trap for atoms and molecules
• Characterizing the Zeeman slowing force for ${}^{40}$Ca${}^{19}$F molecules
• Prospects of forming high-spin polar molecules from ultracold atoms
• Sympathetic cooling and slowing of molecules with Rydberg atoms
• Collisions of Spin-polarized YO Molecules for Single Partial Waves
• Laser cooling of molecules
• Scheme for Deterministic Loading of Laser-Cooled Molecules into Optical Tweezers
• Coherence of Symmetry-Protected Rotational Qubits in Cold Polyatomic Molecules
• An Electro-Optical Trap for Polar Molecules
• Wavelength modulation laser spectroscopy of N${}_2$O at 17 $\mu$m
• CaF+CaF interactions in the ground and excited electronic states: implications for collisional losses
• Translational dynamics of diatomic molecule in magnetic quadrupole trap
• Hyperfine van der Waals repulsion between open-shell polar molecules