Large atom number dual-species magneto-optical trap for fermionic 6Li and 40K atoms

Abstract

We present the design, implementation and characterization of a dual-species magneto-optical trap (MOT) for fermionic 6Li and 40K atoms with large atom numbers. The MOT simultaneously contains 5.2x10^9 6Li-atoms and 8.0x10^9 40K-atoms, which are continuously loaded by a Zeeman slower for 6Li and a 2D-MOT for 40K. The atom sources induce capture rates of 1.2x10^9 6Li-atoms/s and 1.4x10^9 40K-atoms/s. Trap losses due to light-induced interspecies collisions of ~65% were observed and could be minimized to ~10% by using low magnetic field gradients and low light powers in the repumping light of both atomic species. The described system represents the starting point for the production of a large-atom number quantum degenerate Fermi-Fermi mixture.

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• Intense slow beams of bosonic potassium isotopes
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Cited by in corpus (27)

• Sub-Doppler laser cooling of fermionic 40K atoms in three-dimensional gray optical molasses
• Low-temperature, high-density magneto-optical trapping of potassium using the open 4S-5P transition at 405 nm
• Production of a degenerate Fermi-Fermi mixture of dysprosium and potassium atoms
• Simultaneous sub-Doppler laser cooling of fermionic ${}^6$Li and ${}^{40}$K on the D${}_1$ line: Theory and Experiment
• Two-photon photoassociation spectroscopy of CsYb: ground-state interaction potential and interspecies scattering lengths
• Photoassociative creation of ultracold heteronuclear 6Li40K* molecules
• Thermodynamics of the two-component Fermi gas with unequal masses at unitarity
• Photoassociative production of ultracold heteronuclear YbLi* molecules
• Interspecies thermalization in an ultracold mixture of Cs and Yb in an optical trap
• Two-stage magneto-optical trapping and narrow-line cooling of ${}^6$Li atoms to high phase-space density
• Towards improved loading, cooling, and trapping of molecules in magneto-optical traps
• A quantum degenerate Bose-Fermi mixture of ${}^{41}$K and ${}^6$Li
• Interspecies collision-induced losses in a dual species 7Li-85Rb magneto-optical trap
• An all-optical atom trap as a target for MOTRIMS-like collision experiments
• Ion friction at small values of the Coulomb logarithm
• An Adaptable Dual Species Effusive Source and Zeeman Slower Design Demonstrated with Rb and Li
• Fermi gases with imaginary mass imbalance and the sign problem in Monte Carlo calculations
• Phases of spin- and mass-imbalanced ultracold Fermi gases in harmonic traps
• Analog Simulation of Weyl Particles with Cold Atoms
• Zero-temperature phase diagram of Yukawa bosons
• Quasienergy operators and generalized squeezed states for systems of trapped ions
• Fast and High-Yield Loading of a D${}_2$ MOT of Potassium from a Cryogenic Buffer Gas Beam
• Electronic structure and rovibrational predissociation of the 2sPi state in KLi
• Landau-like states in neutral particles
• Squeezing giant spin states via geometric phase control in cavity-assisted Raman transitions
• Preparation of quasi-two-dimensional Bose mixture of ultracold ${}^{23}$Na and ${}^{87}$Rb atoms
• High-flux cold lithium-6 and rubidium-87 atoms from compact two-dimensional magneto-optical traps