2015/11/30 by Samuel P. Nolan, Jacopo Sabbatini, M. W. J. Bromley +3 · 1 citation
Chemistry · Physics and Astronomy · #Advanced Frequency and Time Standards #Atomic and Subatomic Physics Research #Bose–Einstein condensate #Chemistry #Cold Atom Physics and Bose-Einstein Condensates #Physics #Quantum #Quantum mechanics #Ring (chemistry) #Spin (aerodynamics) #Trap (plumbing) #cond-mat.quant-gas #quant-ph
paper · pdf · doi:10.1103/physreva.93.023616
published as Phys. Rev. A 93, 023616 (2016) · 13 pages, 9 figures
openalex publication_date 2016/02/11 · arxiv created 2016/02/12 · arxiv updated 2016/02/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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.