We report the preparation of Bose-Einstein condensates (BECs) by integrating laser cooling with a grating magneto-optical trap and forced evaporation in a magnetic trap on a single chip. This approach allows us to reach BEC threshold with a BEC of $6\times {10}^4$ 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.

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• Atom & ion cooling
• Bose-Einstein condensates
• Cold atoms & matter waves
• Cooling & trapping
• Quantum sensing
• Ultracold gases