A Fermi Degenerate Gas of Polar Molecules

Abstract

It has long been expected that quantum degenerate gases of molecules would open access to a wide range of phenomena in molecular and quantum sciences. However, the very complexity that makes ultracold molecules so enticing has made reaching degeneracy an outstanding experimental challenge over the past decade. We now report the production of a Fermi degenerate gas of ultracold polar molecules of potassium--rubidium (KRb). Through coherent adiabatic association in a deeply degenerate mixture of a rubidium Bose-Einstein condensate and a potassium Fermi gas, we produce molecules at temperatures below 0.3 times the Fermi temperature. We explore the properties of this reactive gas and demonstrate how degeneracy suppresses chemical reactions, making a long-lived degenerate gas of polar molecules a reality.

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• Schemes for robust quantum computation with polar molecules
• Realization of SU(2)*SU(6) Fermi System
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Cited by in corpus (185)

• Quantum Simulators: Architectures and Opportunities
• Tools for quantum simulation with ultracold atoms in optical lattices
• Dipolar physics: A review of experiments with magnetic quantum gases
• Quantum control of molecular rotation
• An Optical Tweezer Array of Ultracold Molecules
• Topology-Induced Spontaneous Non-reciprocal Pumping in Cold-Atom Systems with Loss
• Direct observation of bimolecular reactions of ultracold KRb molecules
• Evaporation of microwave-shielded polar molecules to quantum degeneracy
• Direct Laser Cooling of a Symmetric Top Molecule
• Roadmap on STIRAP applications
• Robust encoding of a qubit in a molecule
• Observation of Bose-Einstein Condensation of Dipolar Molecules
• On-Demand Entanglement of Molecules in a Reconfigurable Optical Tweezer Array
• Resonant collisional shielding of reactive molecules using electric fields
• Sticky collisions of ultracold RbCs molecules
• Probing site-resolved correlations in a spin system of ultracold molecules
• Dipolar evaporation of reactive molecules to below the Fermi temperature
• Loss of ultracold RbCs molecules via optical excitation of long-lived two-body collision complexes
• Quantum state manipulation and cooling of ultracold molecules
• Sub-Doppler Cooling and Compressed Trapping of YO Molecules at $\mu$K Temperatures
• 1D Magneto-Optical Trap of Polyatomic Molecules
• Tuning of dipolar interactions and evaporative cooling in a three-dimensional molecular quantum gas
• Laser cooling of molecules
• Quench Dynamics of a Fermi Gas with Strong Non-Local Interactions
• Many-Body Topological and Skin States without Open Boundaries
• Transition from a polaronic condensate to a degenerate Fermi gas of heteronuclear molecules
• A robust entangling gate for polar molecules using magnetic and microwave fields
• Self-bound dipolar droplets and supersolids in molecular Bose-Einstein condensates
• Molecular assembly of ground state cooled single atoms
• Collisionally Stable Gas of Bosonic Dipolar Ground State Molecules
• Collisions between cold molecules in a superconducting magnetic trap
• Probing photoinduced two-body loss of ultracold non-reactive bosonic ${}^{23}$Na${}^{87}$Rb and ${}^{23}$Na${}^{39}$K molecules
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• Atomic Bose-Einstein condensate to molecular Bose-Einstein condensate transition
• Spectroscopic characterization of aluminum monofluoride with relevance to laser cooling and trapping
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• High Phase-Space Density of Laser-Cooled Molecules in an Optical Lattice
• A Feshbach resonance in collisions between ultracold ground state molecules
• Quantum control of molecules for fundamental physics
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• Evidence for association of triatomic molecule in ultracold ${}^{23}$Na${}^{40}$K and ${}^{40}$K mixture
• Reactions Between Layer-Resolved Molecules Mediated by Dipolar Exchange
• Blue-Detuned Magneto-Optical Trap of Molecules
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• Floquet Hopf Insulators
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• Optical cycling of AlF molecules
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• Topological properties of the long-range Kitaev chain with Aubry-André-Harper modulation
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• Effective potential and superfluidity of microwave-dressed polar molecules
• Electron electric dipole moment searches using clock transitions in ultracold molecules
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• Many-body Chemical Reactions in a Quantum Degenerate Gas
• Optical Trapping of a Polyatomic Molecule in an $\ell$-Type Parity Doublet State
• Observation of unitary p-wave interactions between fermions in an optical lattice
• Thermalization and Sub-Poissonian Density Fluctuations in a Degenerate Molecular Fermi Gas
• Observation of generalized t-J spin dynamics with tunable dipolar interactions
• Theoretical Aspects of Radium-Containing Molecules Amenable to Assembly from Laser-Cooled Atoms for New Physics Searches
• Controlling the ac Stark effect of RbCs with dc electric and magnetic fields
• Spectroscopy on the $A^1\Pi \leftarrow X^1{\Sigma }^{+}$ Transition of Buffer-Gas Cooled AlCl
• Pauli blocking of atomic spontaneous decay
• Collective Dissipative Molecule Formation in a Cavity
• Steering ultracold reactions through long-lived transient intermediates
• Suppression of Unitary Three-body Loss in a Degenerate Bose-Fermi Mixture
• A High Phase-Space Density Gas of NaCs Feshbach Molecules
• Strings of ultracold molecules in a synthetic dimension
• Molecular Laser-Cooling in a Dynamically Tunable Repulsive Optical Trap
• Singlet Pathway to the Ground State of Ultracold Polar Molecules
• Ultracold ${}^{88}{\mathrm{Sr}}_2$ molecules in the absolute ground state
• Floquet Engineering Ultracold Polar Molecules to Simulate Topological Insulators
• Molecular Collisions: from Near-cold to Ultra-cold
• Quantum Many-Body Physics with Ultracold Polar Molecules: Nanostructured Potential Barriers and Interactions
• High-fidelity multistate STIRAP assisted by shortcut fields
• Raman Sideband Cooling of Molecules in an Optical Tweezer Array
• Few-body bound states of two-dimensional bosons
• Realizing Topological Superconductivity in Tunable Bose-Fermi Mixtures with Transition Metal Dichalcogenide Heterostructures
• Collisional losses of ultracold molecules due to intermediate complex formation
• Coherent optical creation of a single molecule
• Magnetism in the two-dimensional dipolar XY model
• Enhancing dipolar interactions between molecules using state-dependent optical tweezer traps
• Chemistry of a light impurity in a Bose-Einstein condensate
• Coherent Manipulation of the Internal State of Ultracold ${}^{87}$Rb${}^{133}$Cs Molecules with Multiple Microwave Fields
• Electro-association of ultracold dipolar molecules into tetramer field-linked states
• Double Microwave Shielding
• Observation of photoassociation resonances in ultracold atom-molecule collisions
• Preparation of a quantum degenerate mixture of ${}^{23}$Na${}^{40}$K molecules and ${}^{40}$K atoms
• Ultralong-range Rydberg bi-molecules
• Phase space structure and escape time dynamics in a Van der Waals model for exothermic reactions
• Blackbody thermalization and vibrational lifetimes of trapped polyatomic molecules
• A digital PID controller for stabilizing large electric currents to the ppm level for Feshbach resonance studies
• Interaction induced fractionalization and topological superconductivity in the polar molecules anisotropic $t-J$ model
• Controlling the dynamics of ultracold polar molecules in optical tweezers
• Probing low-energy Lorentz violation from high-energy modified dispersion in dipolar Bose-Einstein condensates
• Four-body singlet potential energy surface for reactions of calcium monofluoride
• Spin qudit tomography and state reconstruction error
• Photoassociation of ultracold long-range polyatomic molecules
• Microwave trap for atoms and molecules
• Optically trapped Feshbach molecules of fermionic 161Dy and 40K
• Efficient Pathway to NaCs Ground State Molecules
• Enhanced quantum state transfer via feedforward cancellation of optical phase noise
• The ground state of polaron in an ultracold dipolar Fermi gas
• Homogeneous and domain wall topological Haldane conductors with dressed Rydberg atoms
• Rotational-state dependence of interactions between polar molecules
• Observation of Microwave Shielding of Ultracold Molecules
• Thermodynamic stability, compressibility matrix, and effects of mediated interactions in a strongly-interacting Bose-Fermi mixture
• Loading and Cooling in an Optical Trap via Hyperfine Dark States
• Sympathetic cooling and slowing of molecules with Rydberg atoms
• Parametric tuning of quantum phase transitions in ultracold reactions
• Single-Particle properties of a strongly-interacting Bose-Fermi mixture with mass and population imbalance
• Fast loading of a cold mixture of Sodium and Potassium atoms from compact and versatile cold atomic beam sources
• Understanding chemical reactions in a quantum degenerate gas of polar molecules via complex formation
• Nondestructive dispersive imaging of rotationally excited ultracold molecules
• Collisions of Spin-polarized YO Molecules for Single Partial Waves
• Dynamics of a buffer-gas-loaded, deep optical trap for molecules
• Bidirectional, Analog Current Source Benchmarked with Gray Molasses-Assisted Stray Magnetic Field Compensation
• Temperature-Dependent Contact of Weakly Interacting Single-Component Fermi Gases and Loss Rate of Degenerate Polar Molecules
• Evaporative cooling to a Rydberg crystal close to its ground state
• Calibrating the absorption imaging of cold atoms under high magnetic fields
• A Model for Scattering with Proliferating Resonances: Many Coupled Square Wells
• Chiral to helical Majorana fermion transition in a $p$-wave superconductor
• A protocol to realize triatomic ultralong range Rydberg molecules in an ultracold KRb gas
• Hyperfine structure of the ${\mathbf{A}}^1\mathbf{\Pi }$ state of AlCl and its relevance to laser cooling and trapping
• Inelastic collisions in radiofrequency-dressed mixtures of ultracold atoms
• Quantum Zeno-based Detection and State Engineering of Ultracold Polar Molecules
• Intercombination line photoassociation spectroscopy of ${}^{87}$Rb${}^{170}$Yb
• Dipolar Bose-Hubbard Model in finite-size real-space cylindrical lattices
• Stability and Dynamics of Atom-Molecule Superfluids Near a Narrow Feshbach Resonance
• Momentum-selective pair creation of spin excitations in dipolar bilayers
• Spin Squeezing with Itinerant Dipoles: A Case for Shallow Lattices
• Localization of Pairs in One-Dimensional Quasicrystals with Power-Law Hopping
• Ultracold Interactions between Ions and Polar Molecules
• Boson-fermion pairing and condensation in two-dimensional Bose-Fermi mixtures
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• Two ultracold highly magnetic atoms in a one-dimensional harmonic trap
• Dynamics of translational and rotational thermalization of AlF molecules via collisions with cryogenic helium
• Pauli blocking effects in thermalization of relativistic plasma
• Stability of quantum degenerate Fermi gases of tilted polar molecules
• Interplay between shell structure and trap deformation in dipolar fermi gases
• $In$ $situ$ observation of non-polar to strongly polar atom-ion collision dynamics
• Enhanced superconductivity and various edge modes in modulated $t$-$J$ chains
• Feshbach resonances in an ultracold ${}^7$Li-${}^{133}$Cs Bose-Bose mixture
• Rotational properties of two interacting cold polar molecules: linear, symmetric, and asymmetric tops
• Leggett mode in a two-component Fermi gas with dipolar interactions
• Exact Thermodynamics For Weakly Interacting Normal-Phase Quantum Gases: Equations of State For All Partial Waves
• Atom-Molecule Superradiance and Entanglement with Cavity-Mediated Three-Body Interactions
• Mechanical stability of resonant Bose-Fermi mixtures
• Insulator phases of Bose-Fermi mixtures induced by intraspecies next-neighbor interactions
• Highly Efficient Creation and Detection of Deeply-bound Molecules via Invariant-based Inverse Engineering with Feasible Modified Drivings
• Fate of thermalization of ultracold fermions with two-body dissipation
• Dual-species Optical tweezer for Rb and K atoms
• Nuclear-Spin Dependent Parity Violation in Optically Trapped Polyatomic Molecules
• Formation of ultracold ${}^{39}$K${}^{133}$Cs Feshbach molecules
• Phase Transitions of Repulsive Two-Component Fermi Gases in Two Dimensions
• Empirical LiK excited state potentials: connecting short range and near dissociation expansions
• Rydberg dressed spin-1/2 Fermi gases in one dimension
• Propagation of light in cold emitter ensembles with quantum position correlations due to static long-range dipolar interactions
• Ultracold coherent control of molecular collisions at a Förster resonance
• Multiple polaron quasiparticles with dipolar fermions in a bilayer geometry
• A Radio-Frequency Emitter Design for the Low-Frequency Regime in Atomic Experiments
• Multi-state detection and spatial addressing in a microscope for ultracold molecules
• Symmetry and Self-Bound Droplets in Dipolar Molecular Gases
• Harvesting entanglement from the Lorentz-violating quantum field vacuum in a dipolar Bose-Einstein condensate
• Vortex generation in a superfluid gas of dipolar chains in crossed electric and magnetic fields
• Cooling a Fermi gas with three-body recombination near a narrow Feshbach resonance
• Lossy Quantum Defect Theory of Ultracold Molecular Collisions
• Roaming pathways and survival probability in real-time collisional dynamics of cold and controlled bialkali molecules
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• Strongly dipolar molecular Bose-Einstein condensates: From few- to many-body physics
• Quantum Monte Carlo study of few- and many-body Bose systems in one and two dimensions
• Manipulating multimer propagation using lattice modulation
• Automated Graph-Based Detection of Quantum Control Schemes: Application to Molecular Laser Cooling
• Metastable ferromagnetic clusters in dissipative many-body systems of polar molecules
• First-order phase transition in atom-molecule quantum degenerate mixtures with coherent three-body recombination
• Analogue Black Holes in Reactive Molecules
• Higher-order topological quantum paramagnets
• Bogoliubov theory of a Bose-Einstein condensate of rigid rotor molecules
• Quantum walkers in a disordered lattice with power-law hopping
• Thermal liquid-gas phase transition in a quasi-one-dimensional dipolar Fermi gas
• Asymptotic behavior of correlation functions of one-dimensional polar-molecules on optical lattices