Multielectron ground state electroluminescence
Multielectron ground state electroluminescence
The ground state of a cavity-electron system in the ultrastrong coupling regime is characterized by the presence of virtual photons. If an electric current flows through this system, the modulation of the light-matter coupling induced by this nonequilibrium effect can induce an extracavity photon emission signal, even when electrons entering the cavity do not have enough energy to populate the excited states. We show that this ground state electroluminescence, previously identified in a single-qubit system [Phys. Rev. Lett. 116, 113601 (2016)PRLTAO0031-900710.1103/PhysRevLett.116.113601] can arise in a many-electron system. The collective enhancement of the light-matter coupling makes this effect, described beyond the rotating wave approximation, robust in the thermodynamic limit, allowing its observation in a broad range of physical systems, from a semiconductor heterostructure with flatband dispersion to various implementations of the Dicke model.
Cirio, Mauro
cc53d4b3-190e-48a2-a65a-020e40865d90
Shammah, Nathan
cefd9591-cc9b-4d59-abf4-1b1f62fc4300
Lambert, Neill
93e3eff9-c570-4e64-ba5d-b84ad715d000
De Liberato, Simone
5942e45f-3115-4027-8653-a82667ed8473
Nori, Franco
a90190de-06f0-4686-9fa6-c4ba705ad014
17 May 2019
Cirio, Mauro
cc53d4b3-190e-48a2-a65a-020e40865d90
Shammah, Nathan
cefd9591-cc9b-4d59-abf4-1b1f62fc4300
Lambert, Neill
93e3eff9-c570-4e64-ba5d-b84ad715d000
De Liberato, Simone
5942e45f-3115-4027-8653-a82667ed8473
Nori, Franco
a90190de-06f0-4686-9fa6-c4ba705ad014
Cirio, Mauro, Shammah, Nathan, Lambert, Neill, De Liberato, Simone and Nori, Franco
(2019)
Multielectron ground state electroluminescence.
Physical Review Letters, 122 (19), [190403].
(doi:10.1103/PhysRevLett.122.190403).
Abstract
The ground state of a cavity-electron system in the ultrastrong coupling regime is characterized by the presence of virtual photons. If an electric current flows through this system, the modulation of the light-matter coupling induced by this nonequilibrium effect can induce an extracavity photon emission signal, even when electrons entering the cavity do not have enough energy to populate the excited states. We show that this ground state electroluminescence, previously identified in a single-qubit system [Phys. Rev. Lett. 116, 113601 (2016)PRLTAO0031-900710.1103/PhysRevLett.116.113601] can arise in a many-electron system. The collective enhancement of the light-matter coupling makes this effect, described beyond the rotating wave approximation, robust in the thermodynamic limit, allowing its observation in a broad range of physical systems, from a semiconductor heterostructure with flatband dispersion to various implementations of the Dicke model.
Text
Multielectron Ground State Electroluminescence
- Accepted Manuscript
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e-pub ahead of print date: 15 May 2019
Published date: 17 May 2019
Identifiers
Local EPrints ID: 431668
URI: http://eprints.soton.ac.uk/id/eprint/431668
ISSN: 0031-9007
PURE UUID: 35f669d3-81bf-489f-8dd6-33f865d3c8d3
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Date deposited: 12 Jun 2019 16:30
Last modified: 16 Mar 2024 04:14
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Contributors
Author:
Mauro Cirio
Author:
Nathan Shammah
Author:
Neill Lambert
Author:
Franco Nori
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