Stick-Slip Dynamics of a Stressed Ion Crystal
Stick-Slip Dynamics of a Stressed Ion Crystal
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受应力离子晶体的粘滑动力学
DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
D. Dubin
中科院分区：
文献类型：
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作者：
T. Mitchell;J. Bollinger;W. Itano;D. Dubin
我们研究了通过旋转电场扰动控制潘宁陷阱中激光冷却离子晶体的旋转。我们表明，当晶体相对于旋转扰动锁相或“卡住”时，施加小扭矩会产生以一定间隔间隔的晶体取向的突然角度跳跃或“滑动”。角滑移的分布由幂律描述，其中幂律指数取决于所施加的扭矩。我们相信这个系统是由恒定的力驱动的，小的扰动或热效应会触发滑动。
We study the control of the rotation of a laser-cooled ion crystal in a Penning trap by a rotating electric field perturbation. We show that application of a small torque produces sudden angular jumps or “slips” of the crystal orientation spaced by intervals when the crystal is phase locked or “stuck” relative to the rotating perturbation. The distribution of angular slips is described by a power law, where the power-law exponent depends on the applied torque. We believe this system is driven by a constant force and small perturbations or thermal effects trigger the slips.