Light-emitting current of electrically driven single-photon sources

Details Light-emitting current of electrically driven single-photon sources Light-emitting current of electrically driven single-photon sources

2006-05-10

arxiv.org/abs/cond-mat/0605250v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

14 pages, 5 figures

Scientific paper

10.1103/PhysRevB.74.115311

The time-dependent tunnelling current arising from the electron-hole recombination of exciton state is theoretically studied using the nonequilibrium Green's function technique and the Anderson model with two energy levels. The charge conservation and gauge invariance are satisfied in the tunnelling current. Apart from the classical capacitive charging and discharging behavior, interesting oscillations superimpose on the tunnelling current for the applied rectangular pulse voltage.

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