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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• Realizing Fractional Chern Insulators with Dipolar Spins
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• Squeezing Out the Entropy of Fermions in Optical Lattices
• A Simple Quantum Model of Ultracold Polar Molecule Collisions
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Cited by in corpus (186)

• Quantum Simulators: Architectures and Opportunities
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• 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
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• 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
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• Quantum state manipulation and cooling of ultracold molecules
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• Sub-Doppler Cooling and Compressed Trapping of YO Molecules at $\mu$K Temperatures
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• 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
• Probing photoinduced two-body loss of ultracold non-reactive bosonic ${}^{23}$Na${}^{87}$Rb and ${}^{23}$Na${}^{39}$K molecules
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• Evidence for association of triatomic molecule in ultracold ${}^{23}$Na${}^{40}$K and ${}^{40}$K mixture
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• Thermalization and Sub-Poissonian Density Fluctuations in a Degenerate Molecular Fermi Gas
• Observation of unitary p-wave interactions between fermions in an optical lattice
• Theoretical Aspects of Radium-Containing Molecules Amenable to Assembly from Laser-Cooled Atoms for New Physics Searches
• Observation of generalized t-J spin dynamics with tunable dipolar interactions
• Spectroscopy on the $A^1\Pi \leftarrow X^1{\Sigma }^{+}$ Transition of Buffer-Gas Cooled AlCl
• Controlling the ac Stark effect of RbCs with dc electric and magnetic fields
• Pauli blocking of atomic spontaneous decay
• Molecular Laser-Cooling in a Dynamically Tunable Repulsive Optical Trap
• A High Phase-Space Density Gas of NaCs Feshbach Molecules
• Collective Dissipative Molecule Formation in a Cavity
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• Steering ultracold reactions through long-lived transient intermediates
• Suppression of Unitary Three-body Loss in a Degenerate Bose-Fermi Mixture
• Ultracold ${}^{88}{\mathrm{Sr}}_2$ molecules in the absolute ground state
• Floquet Engineering Ultracold Polar Molecules to Simulate Topological Insulators
• Singlet Pathway to the Ground State of Ultracold Polar Molecules
• Few-body bound states of two-dimensional bosons
• High-fidelity multistate STIRAP assisted by shortcut fields
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• Quantum Many-Body Physics with Ultracold Polar Molecules: Nanostructured Potential Barriers and Interactions
• Raman Sideband Cooling of Molecules in an Optical Tweezer Array
• Collisional losses of ultracold molecules due to intermediate complex formation
• Coherent optical creation of a single molecule
• Realizing Topological Superconductivity in Tunable Bose-Fermi Mixtures with Transition Metal Dichalcogenide Heterostructures
• 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
• A digital PID controller for stabilizing large electric currents to the ppm level for Feshbach resonance studies
• Blackbody thermalization and vibrational lifetimes of trapped polyatomic molecules
• Ultralong-range Rydberg bi-molecules
• Phase space structure and escape time dynamics in a Van der Waals model for exothermic reactions
• Probing low-energy Lorentz violation from high-energy modified dispersion in dipolar Bose-Einstein condensates
• Controlling the dynamics of ultracold polar molecules in optical tweezers
• Interaction induced fractionalization and topological superconductivity in the polar molecules anisotropic $t-J$ model
• Spin qudit tomography and state reconstruction error
• Four-body singlet potential energy surface for reactions of calcium monofluoride
• Photoassociation of ultracold long-range polyatomic molecules
• Microwave trap for atoms and molecules
• 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
• Optically trapped Feshbach molecules of fermionic 161Dy and 40K
• Rotational-state dependence of interactions between polar molecules
• Homogeneous and domain wall topological Haldane conductors with dressed Rydberg atoms
• Observation of Microwave Shielding of Ultracold Molecules
• Thermodynamic stability, compressibility matrix, and effects of mediated interactions in a strongly-interacting Bose-Fermi mixture
• Sympathetic cooling and slowing of molecules with Rydberg atoms
• Loading and Cooling in an Optical Trap via Hyperfine Dark States
• Single-Particle properties of a strongly-interacting Bose-Fermi mixture with mass and population imbalance
• Understanding chemical reactions in a quantum degenerate gas of polar molecules via complex formation
• Parametric tuning of quantum phase transitions in ultracold reactions
• Fast loading of a cold mixture of Sodium and Potassium atoms from compact and versatile cold atomic beam sources
• Dynamics of a buffer-gas-loaded, deep optical trap for molecules
• Bidirectional, Analog Current Source Benchmarked with Gray Molasses-Assisted Stray Magnetic Field Compensation
• Nondestructive dispersive imaging of rotationally excited ultracold molecules
• Collisions of Spin-polarized YO Molecules for Single Partial Waves
• Temperature-Dependent Contact of Weakly Interacting Single-Component Fermi Gases and Loss Rate of Degenerate Polar Molecules
• A Model for Scattering with Proliferating Resonances: Many Coupled Square Wells
• A protocol to realize triatomic ultralong range Rydberg molecules in an ultracold KRb gas
• Calibrating the absorption imaging of cold atoms under high magnetic fields
• Hyperfine structure of the ${\mathbf{A}}^1\mathbf{\Pi }$ state of AlCl and its relevance to laser cooling and trapping
• Evaporative cooling to a Rydberg crystal close to its ground state
• Chiral to helical Majorana fermion transition in a $p$-wave superconductor
• Inelastic collisions in radiofrequency-dressed mixtures of ultracold atoms
• Spin Squeezing with Itinerant Dipoles: A Case for Shallow Lattices
• Momentum-selective pair creation of spin excitations in dipolar bilayers
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• Dipolar Bose-Hubbard Model in finite-size real-space cylindrical lattices
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• Stability of quantum degenerate Fermi gases of tilted polar molecules
• Two ultracold highly magnetic atoms in a one-dimensional harmonic trap
• Pauli blocking effects in thermalization of relativistic plasma
• Ultracold Interactions between Ions and Polar Molecules
• $In$ $situ$ 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
• Interplay between shell structure and trap deformation in dipolar fermi gases
• Exact Thermodynamics For Weakly Interacting Normal-Phase Quantum Gases: Equations of State For All Partial Waves
• Mechanical stability of resonant Bose-Fermi mixtures
• Insulator phases of Bose-Fermi mixtures induced by intraspecies next-neighbor interactions
• Dual-species Optical tweezer for Rb and K atoms
• Leggett mode in a two-component Fermi gas with dipolar interactions
• Fate of thermalization of ultracold fermions with two-body dissipation
• Atom-Molecule Superradiance and Entanglement with Cavity-Mediated Three-Body Interactions
• Nuclear-Spin Dependent Parity Violation in Optically Trapped Polyatomic Molecules
• Highly Efficient Creation and Detection of Deeply-bound Molecules via Invariant-based Inverse Engineering with Feasible Modified Drivings
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• Phase Transitions of Repulsive Two-Component Fermi Gases in Two Dimensions
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• Quantum reactive scattering in the long-range ion-dipole potential
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• 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
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• Symmetry and Self-Bound Droplets in Dipolar Molecular Gases
• Harvesting entanglement from the Lorentz-violating quantum field vacuum in a dipolar Bose-Einstein condensate
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• Bogoliubov theory of a Bose-Einstein condensate of rigid rotor molecules
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• Quantum Monte Carlo study of few- and many-body Bose systems in one and two dimensions
• 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
• Asymptotic behavior of correlation functions of one-dimensional polar-molecules on optical lattices