Non-Hermitian dynamics and non-reciprocity of optically coupled nanoparticles

IF 17.6 1区 物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY
Manuel Reisenbauer, Henning Rudolph, Livia Egyed, Klaus Hornberger, Anton V. Zasedatelev, Murad Abuzarli, Benjamin A. Stickler, Uroš Delić
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引用次数: 0

Abstract

Non-Hermitian dynamics, as observed in photonic, atomic, electrical and optomechanical platforms, holds great potential for sensing applications and signal processing. Recently, fully tuneable non-reciprocal optical interaction has been demonstrated between levitated nanoparticles. Here we use this tunability to investigate the collective non-Hermitian dynamics of two non-reciprocally and nonlinearly interacting nanoparticles. We observe parity–time symmetry breaking and, for sufficiently strong coupling, a collective mechanical lasing transition in which the particles move along stable limit cycles. This work opens up a research avenue of non-equilibrium multi-particle collective effects, tailored by the dynamic control of individual sites in a tweezer array. The tuneable and nonlinear nature of the interactions between two optically levitated nanoparticles allows the observation of the system’s non-Hermitian dynamics and a mechanical lasing transition.

Abstract Image

Abstract Image

光学耦合纳米粒子的非赫米梯动力学和非互斥性
在光子、原子、电子和光学机械平台中观察到的非赫米梯动力学,在传感应用和信号处理方面具有巨大的潜力。最近,悬浮纳米粒子之间完全可调的非互易光学相互作用得到了证实。在这里,我们利用这种可调性来研究两个非互惠和非线性相互作用纳米粒子的集体非赫米梯动力学。我们观察到奇偶时对称性破缺,以及在耦合足够强的情况下,粒子沿着稳定的极限周期运动的集体机械激光转变。这项工作开辟了一条通过动态控制镊子阵列中的单个位点来实现非平衡多粒子集体效应的研究途径。
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来源期刊
Nature Physics
Nature Physics 物理-物理:综合
CiteScore
30.40
自引率
2.00%
发文量
349
审稿时长
4-8 weeks
期刊介绍: Nature Physics is dedicated to publishing top-tier original research in physics with a fair and rigorous review process. It provides high visibility and access to a broad readership, maintaining high standards in copy editing and production, ensuring rapid publication, and maintaining independence from academic societies and other vested interests. The journal presents two main research paper formats: Letters and Articles. Alongside primary research, Nature Physics serves as a central source for valuable information within the physics community through Review Articles, News & Views, Research Highlights covering crucial developments across the physics literature, Commentaries, Book Reviews, and Correspondence.
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