Abstract
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 language | English |
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Article number | 023116 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 100 |
Issue number | 2 |
DOIs | |
Publication status | Published - 9 Jan 2012 |
Keywords
- FINE-STRUCTURE
- SPECTROSCOPY
- GENERATION
- CAVITY