Strong coupling between a single quantum dot and an L4/3 photonic crystal nanocavity

Kazuhiro Kuruma, Yasutomo Ota, Masahiro Kakuda, Satoshi Iwamoto, Yasuhiko Arakawa

Research output: Contribution to journalArticlepeer-review

Abstract

We demonstrate strong coupling between a single quantum dot (QD) and a GaAs-based L4/3-type photonic crystal nanocavity. The L4/3 cavity supports a high theoretical Q factor (∼8 106), a small mode volume [∼0.32 (λ/n)3], and an electric field distribution with the maximum electric field lying within the host dielectric material, which facilitates strong coupling with a QD. We fabricated L4/3 cavities and observed a high Q factor over 80 000 using photoluminescence measurement. We confirmed strong coupling between a single QD and an L4/3 cavity with a Q factor of 33 000 by observing a clear anti-crossing in the spectra.

Original languageEnglish
Article number082009
JournalApplied Physics Express
Volume13
Issue number8
DOIs
Publication statusPublished - 2020 Aug 1
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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