Cooperative electromagnetic interactions and linewidth narrowing in discrete metamaterial systems

Jenkins, S.D. and Ruostekoski, J. (2013) Cooperative electromagnetic interactions and linewidth narrowing in discrete metamaterial systems. In: CLEO/Europe-IQEC 2013, 2013-05-122013-05-16.

Full text not available from this repository.

Abstract

Multiple scattering of the electromagnetic (EM) field from an ensemble of resonators generates interactions which can lead to a cooperative response. In atomic gases, the cooperative response is often washed out due to fluctuations in atomic positions. When these fluctuations are restricted, as in an optical lattice in a Mott-insulator state with precisely one atom per lattice site, a cooperative response can be observed. The ability to fabricate metamaterials whose constituent circuit elements, meta-atoms at fixed positions, interact in prescribed ways with EM fields also permits the construction of systems in which cooperative phenomena emerge. In this work, we show that the cooperative response of an ensemble of discrete resonators can result in a transmission resonance whose quality factor increases with the size of the system. This behaviour arises from the formation of a collective eigenmode of excitation that possesses a suppressed, or subradiant, emission rate. To describe the metamaterial, we developed a model in which one dynamic variable represents a meta-atom interacting with the EM fields. Collective modes emerge from interactions between meta-atoms mediated by the EM field, each mode with its own resonance frequency and decay rate.

Item Type: Contribution to Conference (Paper)
Journal or Publication Title: CLEO/Europe-IQEC 2013
Additional Information: CJ 12.2 (School of Mathematics and Centre for Photonic Metamaterials, University of Southampton)
Departments: Faculty of Science and Technology > Physics
ID Code: 123704
Deposited By: ep_importer_pure
Deposited On: 27 Feb 2018 11:18
Refereed?: Yes
Published?: Published
Last Modified: 22 Feb 2020 01:05
URI: https://eprints.lancs.ac.uk/id/eprint/123704

Actions (login required)

View Item View Item