Giant Rabi Splitting of Whispering Gallery Polaritons in GaN/InGaN Core-Shell Wire

Su-Hyun Gong, Suk Min Ko, Min Ho Jang, Yong Hoon Cho

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

The hybrid nature of exciton polaritons opens up possibilities for developing a new concept nonlinear photonic device (e.g., polariton condensation, switching, and transistor) with great potential for controllability. Here, we proposed a novel type of polariton system resulting from strong coupling between a two-dimensional exciton and whispering gallery mode photon using a core-shell GaN/InGaN hexagonal wire. High quality, nonpolar InGaN multiple-quantum wells (MQWs) were conformally formed on a GaN core nanowire, which was spatially well matched with whispering gallery modes inside the wire. Both high longitudinal-transverse splitting of nonpolar MQWs and high spatial overlap with whispering gallery modes lead to unprecedented large Rabi splitting energy of 180 meV. This structure provides a robust polariton effect with a small footprint; thus, it could be utilized for a wide range of interesting applications.

Original languageEnglish
Pages (from-to)4517-4524
Number of pages8
JournalNano Letters
Volume15
Issue number7
DOIs
Publication statusPublished - 2015 Jul 8
Externally publishedYes

Fingerprint

Whispering gallery modes
Cable cores
polaritons
whispering gallery modes
wire
Wire
Excitons
Semiconductor quantum wells
Photonic devices
excitons
quantum wells
Controllability
Nanowires
Condensation
controllability
Transistors
footprints
Photons
nanowires
transistors

Keywords

  • core'shell wire
  • Exciton polariton
  • microcavity
  • Rabi splitting
  • strong coupling
  • whispering gallery mode

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

Cite this

Giant Rabi Splitting of Whispering Gallery Polaritons in GaN/InGaN Core-Shell Wire. / Gong, Su-Hyun; Ko, Suk Min; Jang, Min Ho; Cho, Yong Hoon.

In: Nano Letters, Vol. 15, No. 7, 08.07.2015, p. 4517-4524.

Research output: Contribution to journalArticle

Gong, Su-Hyun ; Ko, Suk Min ; Jang, Min Ho ; Cho, Yong Hoon. / Giant Rabi Splitting of Whispering Gallery Polaritons in GaN/InGaN Core-Shell Wire. In: Nano Letters. 2015 ; Vol. 15, No. 7. pp. 4517-4524.
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