论文标题
纳米变量的量子持续网球球拍动力学
Quantum persistent tennis racket dynamics of nanorotors
论文作者
论文摘要
不对称刚体的经典旋转在惯性的中间力矩轴周围不稳定，导致转子方向翻转。这种效果被称为网球球拍效应，在经典的合奏中迅速平均降至零，因为翻转时期在分离式的情况下差异很大。在这里，我们探讨了快速旋转热叠层纳米变速器的量子旋转，并表明经典禁止的隧道会导致持续的网球运动动力学，与经典期望形成鲜明对比。我们表征了这种效果，即使量子相干的翻转动力学也可以持续存在，即使在数百万占动动力状态的状态下也可以持续。这种持续的翻转为分子和纳米颗粒的旋转自由度中观察和利用量子效应提供了有前途的途径。
Classical rotations of asymmetric rigid bodies are unstable around the axis of intermediate momentof inertia, causing a flipping of rotor orientation. This effect, known as the tennis racket effect,quickly averages to zero in classical ensembles since the flipping period varies significantly uponapproaching the separatrix. Here, we explore the quantum rotations of rapidly spinning thermalasymmetric nanorotors and show that classically forbidden tunnelling gives rise to persistent tennisracket dynamics, in stark contrast to the classical expectation. We characterise this effect, demon-strating that quantum coherent flipping dynamics can persist even in the regime where millions ofangular momentum states are occupied. This persistent flipping offers a promising route for observ-ing and exploiting quantum effects in rotational degrees of freedom for molecules and nanoparticles.
