Observation of the Einstein–de Haas effect in a Bose–Einstein condensate · H. Matsui et al.
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Hiroki Matsui1, Yuki Miyazawa1, Ryoto Goto2, Chihiro Nakano2, Yuki Kawaguchi3,4, Masahito Ueda5, Mikio Kozuma1,2* The Einstein–de Haas effect is a phenomenon in which angular momentum is transferred from microscopic spins to mechanical rotation of a macroscopic rigid body. We report an observation of the Einstein–de Haas effect in a spinor- dipolar Bose–Einstein condensate, in which the intrinsic magnetic dipole- dipole interaction mediates coherent transfer of angular momentum from atomic spins to collective circulation of a quantum fluid. The depolarized spinor components displayed ring- shaped density distributions that were confirmed as quantized vortices through matter- wave interferometry, revealing a coherent conversion between spin and orbital angular momentum. …
摘自《科学》(Science)第391卷 第6783期 · 2026年1月22日,H. Matsui et al.。仅引用开头一小段供了解文章,版权归原刊所有,全文请阅读原刊。