Abstract
We report the experimental demonstration of single-photon and cascaded photon pair emission in the infrared, originating from a single InAsP quantum dot embedded in a standing InP nanowire. A regular array of nanowires is fabricated by epitaxial growth on an electron-beam patterned substrate. Photoluminescence spectra taken on single quantum dots show narrow emission lines. Superconducting single photon detectors, which have a higher sensitivity than avalanche photodiodes in the infrared, enable us to measure auto and cross correlations. Clear antibunching is observed [g (2) (0) =0.12] and we show a biexciton-exciton cascade, which can be used to create entangled photon pairs. © 2010 American Institute of Physics.
Original language | English |
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Article number | 171106 |
Journal | Applied Physics Letters |
Volume | 97 |
Issue number | 17 |
DOIs | |
Publication status | Published - 25 Oct 2010 |