Single-photon emitters based on epitaxial isolated InP/InGaP quantum dots

Asli Ugur*, Stefan Kremling, Fariba Hatami, Sven Höfling, Lukas Worschech, Alfred Forchel, W. Ted Masselink

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


Quantum dots as single-photon sources have several advantages, such as emitting light over a broad spectral range and being photostable. Quantum dots with densities as low as 1 dot/mu m(2) have been achieved using ultra-low-rate epitaxy and single-dot emission measured without apertures or post-growth processing. Both excitionic and biexcitonic emissions are observed from single dots created in this way, appearing as doublets with a fine-structure splitting of 320 mu eV. The polarization of the split states is also investigated. Hanbury Brown-Twiss correlation measurements for the excitonic emission under cw excitation show anti-bunching behavior with an autocorrelation value of g((2))(0) = 0.2. (C) 2012 American Institute of Physics. [doi: 10.1063/1.3676273]

Original languageEnglish
Article number023116
Number of pages3
JournalApplied Physics Letters
Issue number2
Publication statusPublished - 9 Jan 2012




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