Uncoupled Dark States Can Inherit Polaritonic Properties

Carlos Gonzalez-Ballestero, Johannes Feist, Eduardo Gonzalo Badía, Esteban Moreno, and Francisco J. Garcia-Vidal
Phys. Rev. Lett. 117, 156402 – Published 7 October 2016
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Abstract

When a collection of quantum emitters interacts with an electromagnetic field, the whole system can enter into the collective strong coupling regime in which hybrid light-matter states, i.e., polaritons can be created. Only a small portion of excitations in the emitters are coupled to the light field, and there are many dark states that, in principle, retain their pure excitonic nature. Here we theoretically demonstrate that these dark states can have a delocalized character, which is inherent to polaritons, despite the fact that they do not have a photonic component. This unexpected behavior only appears when the electromagnetic field displays a discrete spectrum. In this case, when the main loss mechanism in the hybrid system stems from the radiative losses of the light field, dark states are even more efficient than polaritons in transferring excitations across the structure.

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  • Received 17 June 2016

DOI:https://doi.org/10.1103/PhysRevLett.117.156402

© 2016 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & OpticalCondensed Matter, Materials & Applied Physics

Authors & Affiliations

Carlos Gonzalez-Ballestero1, Johannes Feist1, Eduardo Gonzalo Badía1, Esteban Moreno1, and Francisco J. Garcia-Vidal1,2,*

  • 1Departamento de Física Teórica de la Materia Condensada and Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, E-28049 Madrid, Spain
  • 2Donostia International Physics Center (DIPC), E-20018 Donostia/San Sebastián, Spain

  • *fj.garcia@uam.es

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Issue

Vol. 117, Iss. 15 — 7 October 2016

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