Low-noise optical lattices for ultracold ${}^6$Li

Abstract

We demonstrate stable, long-term trapping of fermionic ${}^6$Li atoms in an optical lattice with MHz trap frequencies for use in a quantum gas microscope. Adiabatic release from the optical lattice in the object plane of a high-numerical-aperture imaging system allows a measurement of the population distribution among the lowest three bands in both radial directions with atom numbers as low as $7\times 10^2$. We measure exponential ground band heating rates as low as 0.014(1) s${}^{-1}$ corresponding to a radial ground state $1/e$ lifetime of 71(5) s, fundamentally limited by scattering of lattice photons. For all lattice depths above 2 recoil, we find radial ground state lifetimes $\ge 1.6\times 10^6$ recoil times.

5 pages, 4 figures, 3 pages supplemental material

References in corpus (5)

• Many-Body Physics with Ultracold Gases
• Single-Atom Resolved Fluorescence Imaging of an Atomic Mott Insulator
• Precision Spectroscopy of Polarized Molecules in an Ion Trap
• Dressed, noise- or disorder- resilient optical lattices
• Achieving very long lifetimes in optical lattices with pulsed cooling

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