This paper demonstrates the observation of chiral edge modes in a rapidly rotating bosonic superfluid confined by an optical boundary. By tuning the wall sharpness, a smooth crossover between soft wall behavior (propagation speed proportional to wall steepness) and the hard wall regime (chiral free particles) is revealed. The energy gap between edge bands is inferred from atomic skipping motion, and the robustness of edge propagation against disorder is shown by introducing an optical obstacle.
Publisher
arXiv
Published On
May 03, 2024
Authors
Ruixiao Yao, Sungjae Chi, Biswaroop Mukherjee, Airlia Shaffer, Martin Zwierlein, Richard J. Fletcher
Tags
chiral edge modes
bosonic superfluid
optical boundary
wall sharpness
propagation speed
energy gap
disorder robustness
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