  Cold atoms are important for precision atomic applications including
timekeeping and sensing. The 3D magneto-optical trap (3D-MOT), used to produce
cold atoms, will benefit from photonic integration to improve reliability and
reduce size, weight, and cost. These traps require the delivery of multiple,
large area, collimated laser beams to an atomic vacuum cell. Yet, to date, beam
delivery using an integrated waveguide approach has remained elusive. We report
the demonstration of a 87Rb 3D-MOT using a fiber-coupled photonic integrated
circuit to deliver all beams to cool and trap > 1 x 10^6 atoms to near 200
{\mu}K. The silicon nitride photonic circuit transforms fiber-coupled 780 nm
cooling and repump light via waveguides to three mm-width non-diverging
free-space cooling and repump beams directly to the rubidium cell. This planar,
CMOS foundry-compatible integrated beam delivery is compatible with other
components, such as lasers and modulators, promising system-on-chip solutions
for cold atom applications.
