Quantum enhanced measurement of rotations with a spin-1 Bose-Einstein condensate in a ring trap

Nolan, Samuel P, Sabbatini, Jacopo, Bromley, Michael W J, Davis, Matthew J and Haine, Simon A (2016) Quantum enhanced measurement of rotations with a spin-1 Bose-Einstein condensate in a ring trap. Physical Review A, 93 (2). p. 3616. ISSN 2469-9926

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Abstract

We present a model of a spin-squeezed rotation sensor utilizing the Sagnac effect in a spin-1 Bose-Einstein condensate in a ring trap. The two input states for the interferometer are seeded using Raman pulses with Laguerre-Gauss beams and are amplified by the bosonic enhancement of spin-exchange collisions, resulting in spin-squeezing and potential quantum enhancement of the interferometry. The ring geometry has an advantage over separated beam path atomic rotation sensors due to the uniform condensate density. We model the interferometer both analytically and numerically for realistic experimental parameters and find that significant quantum enhancement is possible, but this enhancement is partially degraded when working in a regime with strong atomic interactions.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Research Centres and Groups: Atomic, Molecular and Optical Physics Research Group
Subjects: Q Science > QC Physics
Depositing User: Richard Chambers
Date Deposited: 12 Jan 2017 11:13
Last Modified: 06 Mar 2017 06:42
URI: http://sro.sussex.ac.uk/id/eprint/66135

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