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Electrically driven quantum dot single-photon source at 2 GHz excitation repetition rate with ultra-low emission time jitter
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10.1063/1.4774392
/content/aip/journal/apl/102/1/10.1063/1.4774392
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/1/10.1063/1.4774392
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Figures

Image of FIG. 1.
FIG. 1.

(a) Spectra under pulsed electrical excitation with different pulse amplitudes. Identification of the XX emission line due to the superlinear increase of the intensity with the pump power. (b) Schematic of the electrical excitation. Under pulsed excitation, the bias voltage lies shortly below the luminescence threshold of 1.96 V. (c) Schematic of the setup for autocorrelation measurements.

Image of FIG. 2.
FIG. 2.

(a) Electroluminescence spectra under pulsed excitation at 200 MHz ERR, 150 ps pulse width, 2.32 V pulse amplitude, and different bias voltages. Inset: X emission line for 1.900 V DC bias (black) and curve fitting (green) using two Lorentzian functions (red). (b) Corresponding time-resolved measurements for the exciton emission line in (a). Inset: Enlargement of the first 800 ps of TCSPC measurements. Connection between the DC voltage and the count rate (c), the fast decay time and the estimated tunneling time (d).

Image of FIG. 3.
FIG. 3.

(a) Autocorrelation measurements up to 2 GHz ERR. The multi-photon emission is suppressed by a factor up to 11, clearly observable on the -value. We used the HBT setup with high temporal resolution for the measurements from 400 MHz to 2 GHz. (b) Time-resolved measurement for 2 GHz ERR. The lifetime is roughly 40 ps due to the strong non-radiative decay channel.

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/content/aip/journal/apl/102/1/10.1063/1.4774392
2013-01-09
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Electrically driven quantum dot single-photon source at 2 GHz excitation repetition rate with ultra-low emission time jitter
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/1/10.1063/1.4774392
10.1063/1.4774392
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