控制磁悬浮超导体的旋转
Controlling rotations of magnetically levitated superconductors
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中文总结 AI 辅助
该研究针对磁悬浮超导体的旋转控制问题，利用抗磁力矩与 gyromagnetic 耦合实现非球形超导体三维对齐，还提出探测 gyromagnetic 耦合的实验方案。
中文摘要 AI 辅助
磁捕获的I型超导体是量子-经典边界精密实验的有前景候选材料，可应用于力与加速度的量子传感及量子物理基础测试。本文表明，微米级超导体的旋转运动受两方面强烈影响：（i）捕获场梯度产生的抗磁力矩；（ii）爱因斯坦-德哈斯效应与巴尼特效应产生的 gyromagnetic 耦合。研究显示，这可实现非球形超导体在捕获中心的三维对齐，满足未来传感应用与量子实验的需求，并确定了由此产生的 librational 捕获频率。最后，本文提出一项探测悬浮超导体 gyromagnetic 耦合的实验，并讨论其如何用于控制粒子旋转。
英文摘要
Magnetically trapped type-I superconductors are promising candidates for precision experiments at the quantum-to-classical borderline, with applications in quantum sensing of forces and accelerations and fundamental tests of quantum physics. Here, we show how the rotational motion of micron-sized superconductors is strongly affected by (i) the diamagnetic torques due to the gradient of the trapping field and by (ii) the gyromagnetic coupling due to Einstein-de Haas and Barnett effects. We show that this allows the three-dimensional alignment of asperhical superconductors in the trap center, as required for future sensing applications and quantum experiments, and determine the resulting librational trapping frequencies. Finally, we propose an experiment to probe gyromagnetic coupling in levitated superconductors and we discuss how it can be used to control the particle rotation.
