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Proceedings Paper

Quantum optical effective-medium theory and transformation quantum optics for metamaterials
Author(s): Martijn Wubs; Ehsan Amooghorban; Jingjing Zhang; N. Asger Mortensen
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Paper Abstract

While typically designed to manipulate classical light, metamaterials have many potential applications for quantum optics as well. We argue why a quantum optical effective-medium theory is needed. We present such a theory for layered metamaterials that is valid for light propagation in all spatial directions, thereby generalizing earlier work for one-dimensional propagation. In contrast to classical effective-medium theory there is an additional effective parameter that describes quantum noise. Our results for metamaterials are based on a rather general Lagrangian theory for the quantum electrodynamics of media with both loss and gain. In the second part of this paper, we present a new application of transformation optics whereby local spontaneous-emission rates of quantum emitters can be designed. This follows from an analysis how electromagnetic Green functions trans- form under coordinate transformations. Spontaneous-emission rates can be either enhanced or suppressed using invisibility cloaks or gradient index lenses. Furthermore, the anisotropic material profile of the cloak enables the directional control of spontaneous emission.

Paper Details

Date Published: 16 September 2016
PDF: 9 pages
Proc. SPIE 9918, Metamaterials, Metadevices, and Metasystems 2016, 99180P (16 September 2016); doi: 10.1117/12.2239328
Show Author Affiliations
Martijn Wubs, Technical Univ. of Denmark (Denmark)
Ehsan Amooghorban, Shahrekord Univ. (Iran, Islamic Republic of)
Jingjing Zhang, King's College London (United Kingdom)
Technical Univ. of Denmark (Denmark)
Nanyang Technological Univ. (Singapore)
N. Asger Mortensen, Technical Univ. of Denmark (Denmark)

Published in SPIE Proceedings Vol. 9918:
Metamaterials, Metadevices, and Metasystems 2016
Nader Engheta; Mikhail A. Noginov; Nikolay I. Zheludev, Editor(s)

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