Quantum emitter interacting with graphene coating in the strong-coupling regime

Mehmet Günay, Vasilios Karanikolas, Ramazan Sahin, Rasim Volga Ovali, Alpan Bek, and Mehmet Emre Tasgin
Phys. Rev. B 101, 165412 – Published 14 April 2020
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Abstract

We demonstrate the strong coupling of a quantum dot and a graphene spherical shell coating it. Our simulations are based on solutions of three-dimensional Maxwell equations, using a boundary element method approach. Interaction between the nanostructures produces sharp hybrid modes, even when the two are off-resonant. The coupling of the light to these “very sharp” plexcitonic resonances is an order of magnitude larger than its coupling to a quantum dot, and they are voltage tunable (continuously) in an 80-meV interval. Hence, our results are very attractive for sensing applications and graphene display technologies with sharper colors. Moreover, on a simple theoretical model, we explain why such sharp highly tunable hybrid resonances emerge.

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  • Received 15 January 2020
  • Revised 13 February 2020
  • Accepted 20 March 2020

DOI:https://doi.org/10.1103/PhysRevB.101.165412

©2020 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & OpticalPlasma Physics

Authors & Affiliations

Mehmet Günay1,*, Vasilios Karanikolas2, Ramazan Sahin3, Rasim Volga Ovali4, Alpan Bek5,†, and Mehmet Emre Tasgin2,†

  • 1Department of Nanoscience and Nanotechnology, Faculty of Arts and Science, Mehmet Akif Ersoy University, 15030 Burdur, Turkey
  • 2Institute of Nuclear Sciences, Hacettepe University, 06800 Ankara, Turkey
  • 3Faculty of Science, Department of Physics, Akdeniz University, 07058 Antalya, Turkey
  • 4Department of Materials Science and Nanotechnology Engineering, Recep Tayyip Erdogan University, 53100 Rize, Turkey
  • 5Department of Physics, Middle East Technical University, 06800 Ankara, Turkey

  • *gunaymehmt@gmail.com
  • These authors contributed equally to this work.

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Issue

Vol. 101, Iss. 16 — 15 April 2020

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