Anapole Meta-Atoms

Nonradiating Electric and Magnetic Sources

authored by

Esmaeel Zanganeh, Andrey Evlyukhin, Andrey Miroshnichenko, Mingzhao Song, Elizaveta Nenasheva, Polina Kapitanova

Abstract

The existence of classical nonradiating electromagnetic sources is one of the puzzling questions to date. Here, we investigate radiation properties of physical systems composed of a single ultrahigh permittivity dielectric hollow disk excited by electric or magnetic pointlike dipole antennas, placed inside the inner bore. Using analytical and numerical methods, we demonstrate that such systems can support anapole states with total suppression of far-field radiation and thereby exhibit the properties of electric or magnetic nonradiating sources. It is shown that the suppression of the far-field radiated power is a result of the destructive interference between radiative contributions of the pointlike dipole antennas and the corresponding induced dipole moments of the hollow disk. The experimental investigation of the nonradiating electric source has been performed to confirm our theoretical predictions. Our results pave the way to create and realize compact nonradiative sources for applications in modern wireless power transfer systems, sensors, RFID tags, and medical technologies.

Organisation(s)

Institute of Quantum Optics
PhoenixD: Photonics, Optics, and Engineering - Innovation Across Disciplines

External Organisation(s)

St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO)
Moscow Institute of Physics and Technology
University of New South Wales (UNSW)
Harbin Engineering University
Ceramics Co. Ltd

Type

Article

Journal

Physical review letters

Volume

127

ISSN

0031-9007

Publication date

27.08.2021

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

General Physics and Astronomy

Electronic version(s)

https://doi.org/10.1103/physrevlett.127.096804 (Access: Closed)