Electrically driven single-photon source.
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.
Yuan
Zhiliang
Z
Toshiba Research Europe Limited, Cambridge Research Laboratory, 260 Cambridge Science Park, Milton Road, Cambridge, CB4 0WE, UK.
Kardynal
Beata E
BE
Stevenson
R Mark
RM
Shields
Andrew J
AJ
Lobo
Charlene J
CJ
Cooper
Ken
K
Beattie
Neil S
NS
Ritchie
David A
DA
Pepper
Michael
M