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Trapped atoms on photonic structures inspire many novel quantum devices forquantum information processing and quantum sensing. Here, we have demonstrateda hybrid photonic-atom chip platform based on a GaN-on-sapphire chip and thetransport of an ensemble of atoms from free space towards the chip with anoptical conveyor belt. The maximum transport efficiency of atoms is about 50%with a transport distance of 500 $\mathrm{\mu m}$. Our results open up a newroute toward the efficiently loading of cold atoms into the evanescent-fieldtrap formed by the photonic integrated circuits, which promises strong andcontrollable interactions between single atoms and single photons.

Transporting cold atoms towards a GaN-on-sapphire chip via an optical conveyor belt