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Controlling the dynamical scale factor in a trapped atom Sagnac interferometer

Zhou, Yijia; Lesanovsky, Igor; Fernholz, Thomas; Li, Weibin

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Authors

Yijia Zhou



Abstract

Sagnac interferometers with massive particles promise unique advantages in achieving high-precision measurements of rotation rates over their optical counterparts. Recent proposals and experiments are exploring nonballistic Sagnac interferometers where trapped atoms are transported along a closed path. This is achieved by using superpositions of internal quantum states and their control with state-dependent potentials. We address emergent questions regarding the dynamical behavior of Bose-Einstein condensates in such an interferometer and its impact on rotation sensitivity. We investigate complex dependencies on atomic interactions as well as trap geometries, rotation rates, and speed of operation. We find that temporal transport profiles obtained from a simple optimization strategy for noninteracting particles remain surprisingly robust also in the presence of interactions over a large range of realistic parameters. High sensitivities can be achieved for short interrogation times far from the adiabatic regime. This highlights a route to building fast and robust guided-ring Sagnac interferometers with fully trapped atoms.

Citation

Zhou, Y., Lesanovsky, I., Fernholz, T., & Li, W. (2020). Controlling the dynamical scale factor in a trapped atom Sagnac interferometer. Physical Review A, 101(1), Article 012517. https://doi.org/10.1103/physreva.101.012517

Journal Article Type Article
Acceptance Date Jan 9, 2020
Online Publication Date Jan 29, 2020
Publication Date Jan 29, 2020
Deposit Date Mar 11, 2020
Publicly Available Date Sep 16, 2020
Journal Physical Review A
Print ISSN 2469-9926
Electronic ISSN 2469-9934
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 101
Issue 1
Article Number 012517
DOI https://doi.org/10.1103/physreva.101.012517
Public URL https://nottingham-repository.worktribe.com/output/3842169
Publisher URL https://journals.aps.org/pra/ahttps://journals.aps.org/pra/abstract/10.1103/PhysRevA.101.012517bstract/10.1103/PhysRevA.101.012517
Additional Information ©2020 American Physical Society

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