Sagnac interferometry with a single atomic clock

Stevenson, Robin, Hush, Michael R., Bishop, Thomas, Lesanovsky, Igor and Fernholz, Thomas (2015) Sagnac interferometry with a single atomic clock. Physical Review Letters, 115 (16). p. 163001. ISSN 0031-9007

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The Sagnac effect enables interferometric measurements of rotation with high precision. Using matter waves instead of light promises resolution enhancement by orders of magnitude that scales with particle mass. So far, the paradigm for matter wave Sagnac interferometry relies on DeBroglie waves and thus on free propagation of atoms either in free fall or within waveguides. However, the Sagnac effect can be expressed as a propertime difference experienced by two observers moving in opposite directions along closed paths and has indeed been measured with atomic clocks flown around Earth. Inspired by this, we investigate an interferometer comprised of a single atomic clock. The Sagnac effect manifests as a phase shift between trapped atoms in different internal states after transportation along closed paths in opposite directions, without any free propagation. With analytic models, we quantify limitations of the scheme arising from atomic dynamics and finite temperature. Furthermore, we suggest an implementation with previously demonstrated technology.

Item Type: Article
Additional Information: Copyright 2015 American Physical Society.
Schools/Departments: University of Nottingham, UK > Faculty of Science > School of Physics and Astronomy
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Depositing User: Lesanovsky, Igor
Date Deposited: 21 Oct 2015 12:47
Last Modified: 04 May 2020 17:19

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