Bose-Einstein condensate comagnetometer
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10.1103/PhysRevLett.124.170401
Inclou dades d'ús des de 2022
Cita com:
hdl:2117/369285
Tipus de documentArticle
Data publicació2020-04-29
EditorAmerican Institute of Physics (AIP)
Condicions d'accésAccés obert
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continguts d'aquesta obra estan subjectes a la llicència de Creative Commons
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Reconeixement-NoComercial-SenseObraDerivada 4.0 Internacional
Abstract
We describe a comagnetometer employing the f ¼ 1 and f ¼ 2 ground state hyperfine manifolds of a
87Rb spinor Bose-Einstein condensate as colocated magnetometers. The hyperfine manifolds feature nearly
opposite gyromagnetic ratios and thus the sum of their precession angles is only weakly coupled to external
magnetic fields, while being highly sensitive to any effect that rotates both manifolds in the same way. The
f ¼ 1 and f ¼ 2 transverse magnetizations and azimuth angles are independently measured by
nondestructive Faraday rotation probing, and we demonstrate a 44.0(8) dB common-mode rejection in
good agreement with theory. We show how the magnetometer coherence time can be extended to ~1 s, by
using spin-dependent interactions to inhibit hyperfine relaxing collisions between f ¼ 2 atoms. The
technique could be used in high sensitivity searches for new physics on submillimeter length scales,
precision studies of ultracold collision physics, and angle-resolved studies of quantum spin dynamics.
CitacióMazzinghi, C. [et al.]. Bose-Einstein condensate comagnetometer. "Physical review letters", 29 Abril 2020, vol. 124, núm. 17, p. 1-6.
ISSN0031-9007
Versió de l'editorhttps://journals.aps.org/prl/abstract/10.1103/PhysRevLett.124.170401
Altres identificadorshttps://arxiv.org/abs/1910.06642
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