利用单离子探针观测空间相关的旋转多普勒频移
Observation of Space-Dependent Rotational Doppler Shifts with a Single Ion Probe
AI总结：
提出用单个被囚禁离子探测两束共轴涡旋激光的旋转多普勒效应，通过空间定位、模拟与解析模型揭示其随靠近光束中心增强且与束腰无关。
摘要：
我们展示了一项利用单个被囚禁离子研究旋转多普勒效应的实验，该离子由两束共轴传播的涡旋激光束激发。该装置隔离了场的方位角梯度，消除了纵向和曲率效应。我们通过在光束之间确定性地定位单个离子，对该现象进行了详细表征，获得了取决于离子角速度以及两束光之间光学轨道角动量之差的信号。测量结果的解释得到了数值模拟和简化解析模型的支持。我们的结果揭示了旋转多普勒效应的关键性质，表明它在接近光束中心时增大，并且与光束束腰无关。这为在传感和操控垂直于光束传播方向的原子运动方面实现超踢或超多普勒频移的可行性提供了见解。
英文摘要：
We present an experiment investigating the rotational Doppler effect using a single trapped ion excited by two copropagating vortex laser beams. The setup isolates the azimuthal gradients of the fields, eliminating longitudinal and curvature effects. We provide a detailed characterization of the phenomenon by deterministically positioning a single ion across the beams, achieving a signal which depends on the angular velocity of the ion and the difference of optical orbital angular momentum between the two beams. The interpretation of the measurements is supported by numerical simulations and by a simplified analytical model. Our results reveal key properties of the rotational Doppler effect, showing that it increases approaching the center of the beam and that it is independent of the waist of the beam. This offers insights into the feasibility of super-kicks or super-Doppler shifts for sensing and manipulating atomic motion transverse to the beams' propagation direction.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
