论文标题
观察强和可调的光诱导的偶极 - 偶极相互作用之间的光学悬浮纳米颗粒之间的相互作用
Observation of strong and tunable light-induced dipole-dipole interactions between optically levitated nanoparticles
论文作者
论文摘要
光学捕获的纳米颗粒的阵列已成为研究复杂非平衡现象的有前途的平台。与原子多体系统相似，关键成分之一是能够精确控制颗粒之间的相互作用的能力。但是，到目前为止所研究的光学相互作用仅提供有限可调性的保守光学结合力。在这里，我们演示了一种耦合机制，该机制是强度强的阶数，并具有新的定性特征。这些效果来自驱动光诱导的偶极 - 偶极相互作用的光场之间先前未开发的相位相干性。此外，极化控制使我们能够观察到阵列中带电颗粒之间的静电耦合。我们的结果为完全可编程的多体系统与可调式耗散和非偏置相互作用相互作用的多体系统铺平了道路，这对探索悬浮纳米颗粒阵列中的纠缠和拓扑阶段来说是有用的。
Arrays of optically trapped nanoparticles have emerged as a promising platform for the study of complex non-equilibrium phenomena. Analogous to atomic many-body systems, one of the crucial ingredients is the ability to precisely control the interactions between particles. However, the optical interactions studied thus far only provide conservative optical binding forces of limited tunability. Here we demonstrate a coupling mechanism that is orders of magnitude stronger and has new qualitative features. These effects arise from the previously unexplored phase coherence between the optical fields that drive the light-induced dipole-dipole interaction. In addition, polarization control allows us to observe electrostatic coupling between charged particles in the array. Our results pave the way for a fully programmable many-body system of interacting nanoparticles with tunable dissipative and nonreciprocal interactions, which are instrumental for exploring entanglement and topological phases in arrays of levitated nanoparticles.
