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We are developing an atom interferometer that measures horizontal accelerations to form a component of a quantum inertial measurement unit. Benefitting from the inherent stability of atom interferometry, this points to a navigation system that offers long-term accuracy without recourse to GPS. To aid compactness and transportability, the sub-components of the quantum sensor are mounted in a 19-inch rack. This includes an optical system of two titanium-sapphire lasers that delivers all of the optical pulses required to operate a highly sensitive atom interferometer using 87Rb atoms. Active compensation systems that allow operation of the quantum sensor in the noisy environment of a moving vehicle are described. Finally, we give an account of recent field trials on a variety of test platforms.
Joseph Thom
"Atom interferometers for navigation", Proc. SPIE PC12447, Quantum Sensing, Imaging, and Precision Metrology, PC1244706 (9 March 2023); https://doi.org/10.1117/12.2657366
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Joseph Thom, "Atom interferometers for navigation," Proc. SPIE PC12447, Quantum Sensing, Imaging, and Precision Metrology, PC1244706 (9 March 2023); https://doi.org/10.1117/12.2657366