A dual-region ytterbium tweezer apparatus with an in-vacuum nanofiber cavity

We present a dual-region experimental apparatus for trapping single atoms of the fermionic isotope ytterbium-171 (${}^{171}\mathrm{Y}\mathrm{b}$) with optical tweezers in a science chamber containing an in-vacuum nanofiber cavity. A source region is located approximately $240\mathrm{m}\mathrm{m}$ from the science chamber, preserving optical access around the chamber for high-numerical-aperture tweezer optics. A pulsed transport sequence based on longitudinal moving molasses launches atomic pulses toward the science chamber, where they are decelerated and recaptured in a magneto-optical trap. We subsequently load single atoms into a $2\times 2$ tweezer array located approximately $50\mu \mathrm{m}$ from the nanofiber and measure a $1\mathrm{/}e$ lifetime of $9.5(7)\mathrm{s}$. These results demonstrate that the dual-region architecture provides sufficient ${}^{171}\mathrm{Y}\mathrm{b}$ atoms for single-atom tweezer operation near an in-vacuum nanofiber cavity.