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25 February 2020 Hafele and Keating on a chip: Sagnac interferometry with a single clock
Jamie Johnson, Bethany Foxon, Vilius Atkocius, Fabio Gentile, Sindhu Jammi, Konstantinos Poulios, Thomas Fernholz
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Proceedings Volume 11296, Optical, Opto-Atomic, and Entanglement-Enhanced Precision Metrology II; 1129631 (2020) https://doi.org/10.1117/12.2552686
Event: SPIE OPTO, 2020, San Francisco, California, United States
Abstract
We describe our progress in the development of an atom based rotation sensor, which employs state-dependent trapping potentials to transport ultracold atoms along a closed path and perform Sagnac interferometry. Whilst guided atom interferometers are sought after to build miniaturized devices that overcome size restrictions from free-falling atoms, fully trapped interferometers also remove free-propagation along an atomic waveguide. This provides additional control of motion, e.g. removing wave-packet dispersion and enabling operation that remains independent of external acceleration. Our experimental scheme relies on radio-frequency and microwave-fields, which are partly generated via atom-chip technology, providing a step towards implementing a small, robust, and eventually portable atomic-gyroscope.
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Jamie Johnson, Bethany Foxon, Vilius Atkocius, Fabio Gentile, Sindhu Jammi, Konstantinos Poulios, and Thomas Fernholz "Hafele and Keating on a chip: Sagnac interferometry with a single clock", Proc. SPIE 11296, Optical, Opto-Atomic, and Entanglement-Enhanced Precision Metrology II, 1129631 (25 February 2020); https://doi.org/10.1117/12.2552686
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KEYWORDS
Interferometers
Interferometry
Clocks
Sagnac interferometers
Sensors
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