Electrically driven quantum dot-micropillar single photon source with 34% overall efficiency

T. Heindel*, C. Schneider, M. Lermer, S. H. Kwon, T. Braun, S. Reitzenstein, Sven Höfling, M. Kamp, A. Forchel

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

186 Citations (Scopus)

Abstract

We report on triggered single photon emission from low mode volume electrically driven quantum dot-micropillar cavities at repetition rates of up to 220 MHz. Due to an optimized layout of the doped planar microcavity and an advanced lateral current injection scheme, highly efficient single photon sources are realized. While g((2))(0)-values as low as 0.13 +/- 0.05 and a Purcell factor of 4 are observed for a 2.0 mu m diameter micropillar, single photon emission at a rate of (35 +/- 7) MHz and an overall efficiency of (34 +/- 7)% are demonstrated for a 3.0 mu m device.

Original languageEnglish
Article number011107
Number of pages3
JournalApplied Physics Letters
Volume96
Issue number1
DOIs
Publication statusPublished - 4 Jan 2010

Keywords

  • charge injection
  • electroluminescence
  • g-factor
  • microcavities
  • quantum dots

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