Observation of the Einstein-de Haas Effect in a Bose-Einstein condensate
Quantum Gases
2025-10-13 v2
Abstract
The Einstein-de Haas effect is a phenomenon in which angular momentum is transferred from microscopic spins to mechanical rotation of a rigid body. Here, we report the first observation of the Einstein-de Haas effect in a spinor-dipolar Bose-Einstein condensate where quantized vortices emerge in depolarized spinor components through coherent angular-momentum transfer from microscopic atomic spins to macroscopic quantized circulation. Experimental results clearly show that the spherical symmetry of the condensate is dynamically broken into the axisymmetry by an intrinsic magnetic dipole-dipole interaction.
Keywords
Cite
@article{arxiv.2504.17357,
title = {Observation of the Einstein-de Haas Effect in a Bose-Einstein condensate},
author = {Hiroki Matsui and Yuki Miyazawa and Ryoto Goto and Chihiro Nakano and Yuki Kawaguchi and Masahito Ueda and Mikio Kozuma},
journal= {arXiv preprint arXiv:2504.17357},
year = {2025}
}
Comments
12 pages, 6 figures