Electrically driven single-photon source

被引:996
作者
Yuan, ZL
Kardynal, BE
Stevenson, RM
Shields, AJ
Lobo, CJ
Cooper, K
Beattie, NS
Ritchie, DA
Pepper, M
机构
[1] Toshiba Res Europe Ltd, Cambridge Res Lab, Cambridge CB4 0WE, England
[2] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England
关键词
D O I
10.1126/science.1066790
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
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, white another tine 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.
引用
收藏
页码:102 / 105
页数:4
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