Tiesinga, E.
, Sawyer, B.
, Horvath, M.
, Deb, A.
and Kjaergaard, N.
(2017),
Dispersive optical detection of magnetic Feshbach resonances in ultracold gases, Physical Review A, [online], https://doi.org/10.1103/PhysRevA.96.022705
(Accessed October 8, 2025)
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Dispersive optical detection of magnetic Feshbach resonances in ultracold gases
Published
Author(s)
, B Sawyer, M Horvath, A Deb, N Kjaergaard
Abstract
Magnetically tunable Feshbach resonances in ultracold atomic systems are chiefly identified and characterized through time consuming atom loss spectroscopy. We describe an off-resonant dispersive optical probing technique to rapidly locate Feshbach resonances and demonstrate the method by locating four resonances of 87Rb, between the |F = 1,mF = 1> and |F = 2,mF = 0> states. Despite the loss features being 18 G. The resonances consist of two known s-wave features in the vicinity of 9 G and 18 G and two previously unobserved p-wave features near 5 G and 10 G. We further utilize the dispersive approach to directly characterize the two-body loss dynamics for each Feshbach resonance.Citation
Physical Review A
Volume
96
Pub Type
Journals
Download Paper
Keywords
ultracold atoms, dispersive optical detection, collisional resonances.
Citation
Issues
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Created August 18, 2017, Updated November 10, 2018