Fast loading of a cold mixture of Sodium and Potassium atoms from compact and versatile cold atomic beam sources

Abstract

We present the design, implementation and detailed experimental characterization of two-dimensional Magneto-optical traps (MOT) of bosonic ${}^{23}$Na and ${}^{39}$K atoms for loading the cold atomic mixture in a dual-species 3DMOT with a large number of atoms. We report our various measurements pertaining to the characterisation of the two 2D${}^{+}$MOTs via the capture rate in the 3DMOT and also present the optimised parameters for the best performance of the system of the cold atomic mixture. In the optimised condition, we capture more than $3\times 10^{10}$ ${}^{39}$K atoms and $5.8\times 10^8$ ${}^{23}$Na atoms in the 3DMOT simultaneously from the individual 2D${}^{+}$MOTs with the capture rate of $5\times 10^{10}$ atoms/sec and $3.5\times 10^8$ atoms/sec for ${}^{39}$K and ${}^{23}$Na, respectively. We also demonstrate improvements of more than a factor of 5 in the capture rate into the 3DMOT from the cold atomic sources when a relatively high-power ultra-violet light is used to cause light-induced atomic desorption (LIAD) in the 2D${}^{+}$MOT glass cells. The cold atomic mixture would be useful for further experiments on Quantum simulation with ultra-cold quantum mixtures in optical potentials.

References in corpus (47)

• Many-Body Physics with Ultracold Gases
• Quantum Simulation
• Observation of resonance condensation of fermionic atom pairs
• The physics of dipolar bosonic quantum gases
• Spin domains in ground state spinor Bose-Einstein condensates
• The dynamics of component separation in a binary mixture of Bose-Einstein condensates
• Quantum-State Controlled Chemical Reactions of Ultracold KRb Molecules
• Quantum Mechanical Stabilization of a Collapsing Bose-Bose Mixture
• Quantum liquid droplets in a mixture of Bose-Einstein condensates
• Self-bound quantum droplets in atomic mixtures
• Ultracold dense samples of dipolar RbCs molecules in the rovibrational and hyperfine ground state
• Ultracold Dipolar Gas of Fermionic ${}^{23}$Na${}^{40}$K Molecules in their Absolute Ground State
• Two-species mixture of quantum degenerate Bose and Fermi gases
• Tools for quantum simulation with ultracold atoms in optical lattices
• A two atomic species superfluid
• A Bose-Einstein condensate in an optical lattice
• Observation of Quantum Droplets in a Heteronuclear Bosonic Mixture
• Bose-Fermi Mixtures in a Three-dimensional Optical Lattice
• A Fermi Degenerate Gas of Polar Molecules
• Localization of bosonic atoms by fermionic impurities in a 3d optical lattice
• A Mixture of Bose and Fermi Superfluids
• Quantum degenerate two-species Fermi-Fermi mixture coexisting with a Bose-Einstein condensate
• Reactions of ultracold alkali metal dimers
• Degenerate Bose-Bose mixture in a three-dimensional optical lattice
• Suppression and enhancement of impurity scattering in a Bose-Einstein condensate
• Dual-Species Bose-Einstein Condensate of ${}^{87}$Rb and ${}^{133}$Cs
• Evaporation of microwave-shielded polar molecules to quantum degeneracy
• Creation of a dipolar superfluid in optical lattices
• Quantum-degenerate mixture of fermionic lithium and bosonic rubidium gases
• Quantum degenerate mixtures of strontium and rubidium atoms
• Tunable dual-species Bose-Einstein condensates of ${}^{39}$K and ${}^{87}$Rb
• Random bosonic states for robust quantum metrology
• Coherent Microwave Control of Ultracold ${}^{23}$Na${}^{40}$K Molecules
• Observation of a smooth polaron-molecule transition in a degenerate Fermi gas
• Production of a degenerate Fermi-Fermi mixture of dysprosium and potassium atoms
• Large atom number Bose-Einstein condensate of sodium
• Transport of strong-coupling polarons in optical lattices
• A compact high-flux source of cold sodium atoms
• Intense slow beams of bosonic potassium isotopes
• A new quantum gas apparatus for ultracold mixtures of K and Cs and KCs ground-state molecules
• Light-induced atomic desorption in a compact system for ultracold atoms
• Quantum sensing using imbalanced counter-rotating Bose--Einstein condensate modes
• Light-Induced Atomic Desorption for loading a Sodium Magneto-Optical Trap
• A high-flux, adjustable, compact cold-atom source
• A compact experimental machine for studying tunable Bose-Bose superfluid mixtures
• Model-independent measurements of the sodium magneto-optical trap's excited-state population
• Measurements and analysis of response function of cold atoms in optical molasses

Cited by in corpus (3)

• Effect of light-assisted tunable interaction on the position response function of cold atoms
• Non-resonant inter-species interaction and its effect on the position response function of cold atoms
• High-flux cold lithium-6 and rubidium-87 atoms from compact two-dimensional magneto-optical traps