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Self‐assembled quantum dots as a source of single photons and photon pairs
Author(s) -
Shields A. J.,
Stevenson R. M.,
Thompson R. M.,
Ward M. B.,
Yuan Z.,
Kardynal B. E.,
See P.,
Farrer I.,
Lobo C.,
Cooper K.,
Ritchie D. A.
Publication year - 2003
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200303093
Subject(s) - biexciton , quantum dot , photon , exciton , physics , atomic physics , fine structure , single photon source , laser , molecular physics , optoelectronics , condensed matter physics , quantum mechanics
Abstract We investigate the emission from a single self‐organised InAs/GaAs quantum dots as a potential single or pair photon source. Single photon emission is stimulated by exciting the dot with ps laser pulses and collecting either the exciton or biexciton emission line. A more convenient and practical arrangement is to excite the quantum dot electrically by growing it inside a p–i–n structure. Photon pairs are generated through collecting both the exciton and biexciton emissions. We show a strong correlation in the emission times of the exciton and biexciton photon from the dot, as well as in their linear polarisations.