Triggered indistinguishable single photons with narrow line widths from site-controlled quantum dots.
basic_science · Level V
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- Record sourced from PubMed, PMID 23198958.
- Also identified by DOI 10.1021/nl303668z.
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Abstract
In this Letter, we present narrow line width (7 μeV), nearly background-free single-photon emission (g((2))(0) = 0.02) and highly indistinguishable photons (V = 0.73) from site-controlled In(Ga)As/GaAs quantum dots. These excellent properties have been achieved by combining overgrowth on ex situ pit-patterned substrates with vertical stacking of spectrally distinct quantum dot layers. Our study paves the way for large-scale integration of quantum dots into quantum photonic circuits as indistinguishable single-photon sources.