We show that the epitaxial growth of thin layers of AlGaAs on Ge and Si substrates allows to obtain single photon sources by exploiting the sparse and unintentional contamination with acceptors of the AlGaAs. Very bright and sharp single photoluminescence lines are observed in confocal microscopy. These lines behave very much as single excitons in quantum dots, but their implementation is by far much easier, since it does not require 3D nucleation. The photon antibunching is demonstrated by time resolved Hanbury Brown and Twiss measurements

Minari, S., Cavigli, L., Sarti, F., Abbarchi, M., Accanto, N., Muñoz Matutano, G., et al. (2012). Single photon emission from impurity centers in AlGaAs epilayers on Ge and Si substrates. APPLIED PHYSICS LETTERS, 101(17) [10.1063/1.4761939].

Single photon emission from impurity centers in AlGaAs epilayers on Ge and Si substrates

BIETTI, SERGIO;SANGUINETTI, STEFANO;
2012

Abstract

We show that the epitaxial growth of thin layers of AlGaAs on Ge and Si substrates allows to obtain single photon sources by exploiting the sparse and unintentional contamination with acceptors of the AlGaAs. Very bright and sharp single photoluminescence lines are observed in confocal microscopy. These lines behave very much as single excitons in quantum dots, but their implementation is by far much easier, since it does not require 3D nucleation. The photon antibunching is demonstrated by time resolved Hanbury Brown and Twiss measurements
Articolo in rivista - Articolo scientifico
Single photon emitter; quantum dots; GaAs; Droplet Epitaxy
English
2012
101
17
none
Minari, S., Cavigli, L., Sarti, F., Abbarchi, M., Accanto, N., Muñoz Matutano, G., et al. (2012). Single photon emission from impurity centers in AlGaAs epilayers on Ge and Si substrates. APPLIED PHYSICS LETTERS, 101(17) [10.1063/1.4761939].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/38422
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