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Ground state electroluminescence

Ground state electroluminescence
Ground state electroluminescence
Electroluminescence, the emission of light in the presence of an electric current, provides information on the allowed electronic transitions of a given system. It is commonly used to investigate the physics of strongly coupled light-matter systems, whose eigenfrequencies are split by the strong coupling with the photonic field of a cavity. Here we show that, together with the usual electroluminescence, systems in the ultrastrong light-matter coupling regime emit a uniquely quantum radiation when a flow of current is driven through them. While standard electroluminescence relies on the population of excited states followed by spontaneous emission, the process we describe herein extracts bound photons from the dressed ground state and it has peculiar features that unequivocally distinguish it from usual electroluminescence.
1-7
Cirio, Mauro
cc53d4b3-190e-48a2-a65a-020e40865d90
De Liberato, Simone
5942e45f-3115-4027-8653-a82667ed8473
Lambert, Neill
93e3eff9-c570-4e64-ba5d-b84ad715d000
Nori, Franco
a90190de-06f0-4686-9fa6-c4ba705ad014
Cirio, Mauro
cc53d4b3-190e-48a2-a65a-020e40865d90
De Liberato, Simone
5942e45f-3115-4027-8653-a82667ed8473
Lambert, Neill
93e3eff9-c570-4e64-ba5d-b84ad715d000
Nori, Franco
a90190de-06f0-4686-9fa6-c4ba705ad014

Cirio, Mauro, De Liberato, Simone, Lambert, Neill and Nori, Franco (2016) Ground state electroluminescence. Physical Review Letters, 116 (113601), 1-7. (doi:10.1103/PhysRevLett.116.113601).

Record type: Article

Abstract

Electroluminescence, the emission of light in the presence of an electric current, provides information on the allowed electronic transitions of a given system. It is commonly used to investigate the physics of strongly coupled light-matter systems, whose eigenfrequencies are split by the strong coupling with the photonic field of a cavity. Here we show that, together with the usual electroluminescence, systems in the ultrastrong light-matter coupling regime emit a uniquely quantum radiation when a flow of current is driven through them. While standard electroluminescence relies on the population of excited states followed by spontaneous emission, the process we describe herein extracts bound photons from the dressed ground state and it has peculiar features that unequivocally distinguish it from usual electroluminescence.

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1508.05849v1.pdf - Accepted Manuscript
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Published date: 17 March 2016
Organisations: Quantum, Light & Matter Group

Identifiers

Local EPrints ID: 393655
URI: http://eprints.soton.ac.uk/id/eprint/393655
PURE UUID: 751aeb37-f115-4692-8500-c64d66b1b0a2
ORCID for Simone De Liberato: ORCID iD orcid.org/0000-0002-4851-2633

Catalogue record

Date deposited: 29 Apr 2016 10:24
Last modified: 17 Dec 2019 01:37

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Contributors

Author: Mauro Cirio
Author: Neill Lambert
Author: Franco Nori

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