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2 results on '"S. Sanguinetti2"'

1. Fast emission dynamics in droplet epitaxy GaAs ring-disk nanostructures integrated on Si substrates

Author

L Cavigli1, S Bietti2, M Abbarchi1, C Somaschini2, A Vinattieri1, M Gurioli1, A Fedorov3, G Isella3, E Grilli2, and S Sanguinetti2

Subjects
Condensed Matter::Materials Science, ring-disk nanostructures, GaAs, droplet epitaxy
Abstract

The emission dynamics in GaAs/AlGaAs coupled ring-disk (CRD) quantum structures fabricated on silicon substrates is presented. The CRD structures are self-assembled via droplet epitaxy, a growth technique which, due to its low thermal budget, is compatible with the monolithic integration of III-V devices on Si based electronic circuits. Continuous wave, time resolved photoluminescence and theoretical calculations in the effective mass approximations are presented for the assessment of the electronic and carrier properties of the CRDs. The CRDs show a fast carrier dynamics which

Published
2012
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2. High temperature single photon emitter monolithically integrated on silicon

Author

L. Cavigli, 1 S. Bietti, 2 N. Accanto, 1 S. Minari, 1 M. Abbarchi, 1 G. Isella, 3 C. Frigeri, 4 A. Vinattieri, 1 M. Gurioli, 1, S. Sanguinetti2, Cavigli, L, Bietti, S, Accanto, N, Minari, S, Abbarchi, M, Isella, G, Frigeri, C, Vinattieri, A, Gurioli, M, and Sanguinetti, S

Subjects
Silicon, Photon, Photoluminescence, Physics and Astronomy (miscellaneous), Exciton, chemistry.chemical_element, Gallium arsenide, chemistry.chemical_compound, Optics, Quantum Dots, Microelectronics, Monolithical integration, FIS/03 - FISICA DELLA MATERIA, Common emitter, Physics, business.industry, Condensed Matter::Mesoscopic Systems and Quantum Hall Effect, III-V Semiconductor, Quantum Nanostructure, chemistry, Quantum dot, Optoelectronics, Molecular Beam Epitaxy, Si, business, Single Photon
Abstract

We report on triggered single photon emission from GaAs quantum dots, grown on Si substrates and obtained by means of fabrication protocols compatible with the monolithic integration on Si based microelectronics. Very bright and sharp individual exciton lines are resolved in the spectra and can be followed up to 150 K. The nature of quantum emitters of single photon pulses can be measured up to liquid nitrogen temperature by Hanbury Brown and Twiss interferometric correlations. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4726189]

Published
2012
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