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

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Gunay M., Karanikolas V., Şahin R., Ovali R. V., Bek A., Taşgın M. E.

PHYSICAL REVIEW B, cilt.101, sa.16, 2020 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 101 Sayı: 16
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1103/physrevb.101.165412
  • Dergi Adı: PHYSICAL REVIEW B
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED)
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

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.