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Hafele and Keating on a chip: Sagnac interferometry with a single clock

Johnson, Jamie; Foxon, Bethany; Atkocius, Vilius; Gentile, Fabio; Jammi, Sindhu; Poulios, Konstantinos; Fernholz, Thomas


Jamie Johnson

Bethany Foxon

Vilius Atkocius

Fabio Gentile

Sindhu Jammi

Konstantinos Poulios

Thomas Fernholz


Selim M. Shahriar

Jacob Scheuer


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.

Journal Article Type Conference Paper
Publication Date Feb 25, 2020
Journal Proceedings of SPIE
Print ISSN 0277-786X
Electronic ISSN 1996-756X
Publisher Society of Photo-optical Instrumentation Engineers
Peer Reviewed Peer Reviewed
Volume 11296
APA6 Citation Johnson, J., Foxon, B., Atkocius, V., Gentile, F., Jammi, S., Poulios, K., & Fernholz, T. (2020). Hafele and Keating on a chip: Sagnac interferometry with a single clock. Proceedings of SPIE, 11296,
Keywords Atomic sensors, interferometry, inertial sensing, Sagnac interferometer, ring-shaped atom traps, radio-frequency dressed potentials
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Additional Information Copyright 2020 Society of Photo‑Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this publication for a fee or for commercial purposes, and modification of the contents of the publication are prohibited.


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