A Dielectric Metasurface Optical Chip for the Generation of Cold Atoms

TL;DR

This paper introduces a compact metasurface optical chip that replaces bulky optics to generate cold atoms, achieving high atom numbers and low temperatures suitable for quantum sensing in a more integrated and robust form.

Contribution

It presents a novel metasurface optical chip design that simplifies cold atom production, advancing towards fully integrated quantum devices.

Findings

Achieved ~10^7 atom numbers at 35 μK temperature.

Demonstrated a compact, robust setup replacing traditional optics.

Showcased potential for quantum sensing and computing applications.

Abstract

Compact and robust cold atom sources are increasingly important for quantum research, especially for transferring cutting-edge quantum science into practical applications. In this letter, we report on a novel scheme that utilizes a metasurface optical chip to replace the conventional bulky optical elements used to produce a cold atomic ensemble with a single incident laser beam, which is split by the metasurface into multiple beams of the desired polarization states. Atom numbers $~10^7$ and temperatures (about 35 ${\mu}$K) of relevance to quantum sensing are achieved in a compact and robust fashion. Our work highlights the substantial progress towards fully integrated cold atom quantum devices by exploiting metasurface optical chips, which may have great potential in quantum sensing, quantum computing and other areas.