  The grating-based magneto-optical trap (GMOT) is a promising approach for
miniaturizing cold-atom systems. However, the power consumption of a GMOT
system dominates its feasibility in practical applications. In this study, we
demonstrated a GMOT system based on planar elements that can operate with low
power consumption. A high-diffraction-efficiency grating chip was used to cool
atoms with a single incident beam. A planar coil chip was designed and
fabricated with a low power consumption nested architecture. The grating and
coil chips were adapted to a passive pump vacuum chamber, and up to 106 87Rb
atoms were trapped. These elements effectively reduce the power consumption of
the GMOT and have great potential for applications in practical cold-atom-based
devices.
