title: Electrically driven single-photon source.
abstract: Electroluminescence from a single quantum dot within the intrinsic region of a p-i-n junction is shown to act as an electrically driven single-photon source. At low injection currents, the dot electroluminescence spectrum reveals a single sharp line due to exciton recombination, while another line due to the biexciton emerges at higher currents. The second-order correlation function of the diode displays anti-bunching under a continuous drive current. Single-photon emission is stimulated by subnanosecond voltage pulses. These results suggest that semiconductor technology can be used to mass-produce a single-photon source for applications in quantum information technology.
authors.affiliation: Toshiba Research Europe Limited, Cambridge Research Laboratory, 260 Cambridge Science Park, Milton Road, Cambridge, CB4 0WE, UK.
authors.forename: Zhiliang
authors.initials: Z
authors.lastname: Yuan
authors.forename: Beata E
authors.initials: BE
authors.lastname: Kardynal
authors.forename: R Mark
authors.initials: RM
authors.lastname: Stevenson
authors.forename: Andrew J
authors.initials: AJ
authors.lastname: Shields
authors.forename: Charlene J
authors.initials: CJ
authors.lastname: Lobo
authors.forename: Ken
authors.initials: K
authors.lastname: Cooper
authors.forename: Neil S
authors.initials: NS
authors.lastname: Beattie
authors.forename: David A
authors.initials: DA
authors.lastname: Ritchie
authors.forename: Michael
authors.initials: M
authors.lastname: Pepper