发表机构
Friedrich-Alexander-Universität Erlangen-Nürnberg; Max Planck Institute for the Science of Light; TU Darmstadt（埃尔朗根-纽伦堡大学; 马克斯·普朗克光科学研究所; 达姆施塔特工业大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文提出基于光学干涉的技术，在空芯光纤中控制条纹囚禁的二氧化硅纳米粒子，实现轴向退局域化，扩展至13.23 dB，为远距离传感和宏观量子物理提供平台。
AI 中文摘要
空芯光纤中的囚禁粒子能够实现远距离传感，然而对其光纤内运动的先进控制，如多模态冷却和压缩，仍然具有挑战性。在此，我们提出了基于光学干涉的技术，用于控制光纤内被条纹囚禁的二氧化硅纳米粒子。在对其轴向和径向运动进行反馈冷却后，我们通过两种方法诱导轴向退局域化（位置反压缩）。首先，非绝热条纹抑制将位置方差相对于初始冷态扩大了11.83（±0.7）dB，同时保持了高斯统计特性。其次，在暗条纹处进行多通道粒子定位，通过反演势将退局域化相对于冷态方差增加到13.23（±0.5）dB，这与随机理论一致。更强的退局域化产生了非高斯态。我们的结果表明，空芯光纤中的条纹囚禁粒子是用于远距离传感和宏观量子物理的多功能平台。
英文摘要
Trapped particles in hollow-core fibers enable long-range sensing, though advanced control of their in-fiber motion, such as multimodal cooling and squeezing, remains challenging. Here, we present optical interference-based adaptive techniques for controlling the motion of a fringe-trapped silica nanoparticle inside a fiber. After feedback-cooling its axial and radial motion, we induce axial delocalization (position anti-squeezing) via two complementary approaches. First, non-adiabatic fringe suppression expands the position variance by 11.83 ($\pm$0.7) dB to that of the initial cold-state while retaining Gaussian statistics. Second, multi-pass particle positioning at dark fringes increases the delocalization to 13.23 ($\pm$0.5) dB relative to the cold-state's variance via dark inverted optical potentials, in agreement with our Wiener stochastic model. Stronger delocalization produces non-Gaussian states of motion. Unlike prior inverted-trap implementations, our method requires neither auxiliary optical traps nor charged particles in Paul traps. Our results demonstrate fringe-trapped particles in hollow-core fibers as a versatile platform for long-range sensing and macroscopic quantum physics.
