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Physics > Optics

arXiv:2102.03636 (physics)
[Submitted on 6 Feb 2021]

Title:Observation of Toroidal Pulses of Light

Authors:A. Zdagkas, Y. Shen, C. McDonnell, J. Deng, G. Li, T. Ellenbogen, N. Papasimakis, N. I. Zheludev
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Abstract:The transverse electromagnetic waves are major information and energy carriers. In 1996, Hellwarth and Nouchi theoretically identified a radically different, non-transverse type of electromagnetic pulses of toroidal topology. These pulses, which are propagating counterparts of localized toroidal dipole excitations in matter and exhibit unique electromagnetic wave properties, have never been observed before. Here, we report the generation and characterization of such optical and terahertz Toroidal Light Pulses (TLPs), launched from tailored nanostructured metasurfaces comprising toroidal emitters. This achievement paves the way for experimental studies of energy and information transfer with TLPs, their space-time "entanglement", and their light-matter interactions involving anapoles, localized space-time entangled excitations, skyrmions, and toroidal qubits that are of growing interest for the fundamental science of light and applications.
Subjects: Optics (physics.optics)
Cite as: arXiv:2102.03636 [physics.optics]
  (or arXiv:2102.03636v1 [physics.optics] for this version)
  https://doi.org/10.48550/arXiv.2102.03636
Related DOI: https://doi.org/10.1038/s41566-022-01028-5

Submission history

From: Apostolos Zdagkas [view email]
[v1] Sat, 6 Feb 2021 18:38:32 UTC (1,022 KB)
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