Single photon emission up to liquid nitrogen temperature from charged excitons confined in GaAs-based epitaxial nanostructures

Ł. Dusanowski, M. Syperek, A. Maryński, L.H. Li, J. Misiewicz, S. Höfling, M. Kamp, A. Fiore, G. Sęk

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Abstract

We demonstrate a non-classical photon emitter at near infrared wavelength based on a single (In,Ga)As/GaAs epitaxially grown columnar quantum dot. Charged exciton complexes have been identified in magneto-photoluminescence. Photon auto-correlation histograms from the recombination of a trion confined in a columnar dot exhibit sub-Poissonian statistics with an antibunching dip yielding g(2)(0) values of 0.28 and 0.46 at temperature of 10 and 80 K, respectively. Our experimental findings allow considering the GaAs-based columnar quantum dot structure as an efficient single photon source operating at above liquid nitrogen temperatures, which in some characteristics can outperform the existing solutions of any material system.
Original languageEnglish
Article number233107
JournalApplied Physics Letters
Volume106
Issue number23
DOIs
Publication statusPublished - 8 Jun 2015

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