Bose-Einstein-condensate source on an optical-grating-based atom chip for quantum sensor applications

TL;DR

This paper presents a novel method for creating Bose-Einstein condensates on an atom chip using laser cooling and a grating magneto-optical trap, enhancing cold atom sensor robustness for field applications.

Contribution

It introduces an integrated approach combining laser cooling and magnetic trapping on a chip to produce BECs with a single laser beam, improving sensor reliability.

Findings

Produced a 6×10^4 atom BEC of rubidium-87

Achieved integration of laser cooling with atom chip technology

Enhanced robustness of cold atom sensors for field use

Abstract

We report the preparation of Bose-Einstein condensates (BECs) by integrating laser cooling with a grating magneto-optical trap (GMOT) and forced evaporation in a magnetic trap on a single chip. This new approach allowed us to produce a $6 \times 10^4$ atom Bose-Einstein condensate of rubidium-87 atoms with a single laser cooling beam. Our results represent a significant advance in the robustness and reliability of cold atom-based inertial sensors, especially for applications in demanding field environments.