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Polaritonic nonlocality in light-matter interaction

Polaritonic nonlocality in light-matter interaction
Polaritonic nonlocality in light-matter interaction
Sub-wavelength electromagnetic field localization has been central in photonic research in the last decade, allowing to enhance sensing capabilities as well as increasing the coupling between photons and material excitations. The strong and ultrastrong light-matter coupling regime in the THz range with split-ring resonators coupled to magnetoplasmons has been widely investigated, achieving successive world-records for the largest light-matter coupling ever achieved Ever shrinking resonators have allowed to approach the regime of few electrons strong coupling, in which single-dipole properties can be modified by the vacuum field.
Here we demonstrate, theoretically and experimentally, the existence of a limit to the possibility of arbitrarily increasing electromagnetic confinement in polaritonic systems. Strongly sub-wavelength fields can excite a continuum of high-momenta propagative magnetoplasmons. This leads to peculiar nonlocal polaritonic effects, as certain polaritonic features disappear and the system enters in the regime of discrete-to-continuum strong coupling
ultrastrong coupling, non locality, Polaritons
1749-4885
1-26
Rajabali, Shima
5d4f7cde-fedf-48b9-8a4e-b8094ac53b8d
Cortese, Erika
3a7d67d1-3321-40b2-91fa-2471dbed7147
Beck, Mattias
303654b1-b879-47b3-98d2-d719846400d5
De Liberato, Simone
5942e45f-3115-4027-8653-a82667ed8473
Faist, Jerome
0b732e4a-5ed3-4b87-b07a-bfc628a1195b
Scalari, Giacomo
af1d74d0-ba4e-4bdf-b490-2ce84fb6ec6a
Rajabali, Shima
5d4f7cde-fedf-48b9-8a4e-b8094ac53b8d
Cortese, Erika
3a7d67d1-3321-40b2-91fa-2471dbed7147
Beck, Mattias
303654b1-b879-47b3-98d2-d719846400d5
De Liberato, Simone
5942e45f-3115-4027-8653-a82667ed8473
Faist, Jerome
0b732e4a-5ed3-4b87-b07a-bfc628a1195b
Scalari, Giacomo
af1d74d0-ba4e-4bdf-b490-2ce84fb6ec6a

Rajabali, Shima, Cortese, Erika, Beck, Mattias, De Liberato, Simone, Faist, Jerome and Scalari, Giacomo (2021) Polaritonic nonlocality in light-matter interaction. Nature Photonics, 1-26. (In Press)

Record type: Article

Abstract

Sub-wavelength electromagnetic field localization has been central in photonic research in the last decade, allowing to enhance sensing capabilities as well as increasing the coupling between photons and material excitations. The strong and ultrastrong light-matter coupling regime in the THz range with split-ring resonators coupled to magnetoplasmons has been widely investigated, achieving successive world-records for the largest light-matter coupling ever achieved Ever shrinking resonators have allowed to approach the regime of few electrons strong coupling, in which single-dipole properties can be modified by the vacuum field.
Here we demonstrate, theoretically and experimentally, the existence of a limit to the possibility of arbitrarily increasing electromagnetic confinement in polaritonic systems. Strongly sub-wavelength fields can excite a continuum of high-momenta propagative magnetoplasmons. This leads to peculiar nonlocal polaritonic effects, as certain polaritonic features disappear and the system enters in the regime of discrete-to-continuum strong coupling

Text
Polaritonic_nonlocality_in_light_matter_interaction - Accepted Manuscript
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More information

Accepted/In Press date: 4 May 2021
Keywords: ultrastrong coupling, non locality, Polaritons

Identifiers

Local EPrints ID: 448941
URI: http://eprints.soton.ac.uk/id/eprint/448941
ISSN: 1749-4885
PURE UUID: ac25c0bc-9973-4354-8ca3-867daf5d156d
ORCID for Simone De Liberato: ORCID iD orcid.org/0000-0002-4851-2633

Catalogue record

Date deposited: 11 May 2021 17:03
Last modified: 26 Jun 2021 01:44

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Contributors

Author: Shima Rajabali
Author: Erika Cortese
Author: Mattias Beck
Author: Jerome Faist
Author: Giacomo Scalari

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