Polariton dynamics in one-dimensional arrays of atoms coupled to waveguides

Photons strongly coupled to material systems constitute a novel system for realizing non-linear optics at the level of individual photons and studying the dynamics of non-equilibrium quantum many-body system. We give a simple physical polariton-picture of the dynamics of photons coupled to a one-dim...

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Main Authors: Björn Schrinski, Anders S Sørensen
Format: Article
Language:English
Published: IOP Publishing 2022-01-01
Series:New Journal of Physics
Subjects:
Online Access:https://doi.org/10.1088/1367-2630/acaa4f
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author Björn Schrinski
Anders S Sørensen
author_facet Björn Schrinski
Anders S Sørensen
author_sort Björn Schrinski
collection DOAJ
description Photons strongly coupled to material systems constitute a novel system for realizing non-linear optics at the level of individual photons and studying the dynamics of non-equilibrium quantum many-body system. We give a simple physical polariton-picture of the dynamics of photons coupled to a one-dimensional array of two-level atoms. This picture allows a fully analytical description of the dynamics in terms of polariton scattering inside the medium and reflections of the polaritons from the edge of the array. We show that inelastic collisions, previously identified in small systems, also occur in infinite systems and are related to the existence of multiple bands in the dispersion relation. The developed theory constitutes an effective field theory for the dynamics, which can be used for studies of non-linear optics and many-body dynamics. As a specific example we map the system to the Lieb–Liniger model and show that a so-called Tonks–Girardeau gas of photons is a stable eigenstate of the system in the limit of many emitters.
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spelling doaj.art-d80b7254024d43e29635094098ca1a452023-08-09T14:10:41ZengIOP PublishingNew Journal of Physics1367-26302022-01-01241212302310.1088/1367-2630/acaa4fPolariton dynamics in one-dimensional arrays of atoms coupled to waveguidesBjörn Schrinski0Anders S Sørensen1https://orcid.org/0000-0003-1337-9163Center for Hybrid Quantum Networks (Hy-Q), Niels Bohr Institute, University of Copenhagen , Blegdamsvej 17, DK-2100 Copenhagen, DenmarkCenter for Hybrid Quantum Networks (Hy-Q), Niels Bohr Institute, University of Copenhagen , Blegdamsvej 17, DK-2100 Copenhagen, DenmarkPhotons strongly coupled to material systems constitute a novel system for realizing non-linear optics at the level of individual photons and studying the dynamics of non-equilibrium quantum many-body system. We give a simple physical polariton-picture of the dynamics of photons coupled to a one-dimensional array of two-level atoms. This picture allows a fully analytical description of the dynamics in terms of polariton scattering inside the medium and reflections of the polaritons from the edge of the array. We show that inelastic collisions, previously identified in small systems, also occur in infinite systems and are related to the existence of multiple bands in the dispersion relation. The developed theory constitutes an effective field theory for the dynamics, which can be used for studies of non-linear optics and many-body dynamics. As a specific example we map the system to the Lieb–Liniger model and show that a so-called Tonks–Girardeau gas of photons is a stable eigenstate of the system in the limit of many emitters.https://doi.org/10.1088/1367-2630/acaa4fquantum nonlinear opticswaveguide QEDsubradiancescattering resonancesTonks–Girardeau gas of photons
spellingShingle Björn Schrinski
Anders S Sørensen
Polariton dynamics in one-dimensional arrays of atoms coupled to waveguides
New Journal of Physics
quantum nonlinear optics
waveguide QED
subradiance
scattering resonances
Tonks–Girardeau gas of photons
title Polariton dynamics in one-dimensional arrays of atoms coupled to waveguides
title_full Polariton dynamics in one-dimensional arrays of atoms coupled to waveguides
title_fullStr Polariton dynamics in one-dimensional arrays of atoms coupled to waveguides
title_full_unstemmed Polariton dynamics in one-dimensional arrays of atoms coupled to waveguides
title_short Polariton dynamics in one-dimensional arrays of atoms coupled to waveguides
title_sort polariton dynamics in one dimensional arrays of atoms coupled to waveguides
topic quantum nonlinear optics
waveguide QED
subradiance
scattering resonances
Tonks–Girardeau gas of photons
url https://doi.org/10.1088/1367-2630/acaa4f
work_keys_str_mv AT bjornschrinski polaritondynamicsinonedimensionalarraysofatomscoupledtowaveguides
AT andersssørensen polaritondynamicsinonedimensionalarraysofatomscoupledtowaveguides