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Differential phase shift quantum key distribution using single-photon detectors based on a sinusoidally gated avalanche photodiode
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10.1063/1.2753767
/content/aip/journal/apl/91/1/10.1063/1.2753767
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/1/10.1063/1.2753767
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Experimental setup for the DPS-QKD. IM: intensity modulator; PM: phase modulator; ATT: variable attenuator; PPG: pulse pattern generator; MZI: Mach-Zehnder interferometer; TIA: time interval analyzer; : single-photon detectors based on the SG-APD.

Image of FIG. 2.
FIG. 2.

Diagram of a single-photon detector using a sinusoidally gated APD. BEF: band elimination filter; LPF: low pass filter.

Image of FIG. 3.
FIG. 3.

Histograms of the detected signal at (a) and (b) for a fixed modulation pattern.

Image of FIG. 4.
FIG. 4.

Secure key generation rate as function of communication distance. The open and closed circles show the experimental results of the sifted key generation rates and secure key generation rate, respectively. The dotted and solid curves are numerical results of the sifted key generation rates and secure key generation rate, respectively, where we assumed the following conditions: , , , , and a fiber loss of .

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/content/aip/journal/apl/91/1/10.1063/1.2753767
2007-07-05
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Differential phase shift quantum key distribution using single-photon detectors based on a sinusoidally gated InGaAs∕InP avalanche photodiode
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/1/10.1063/1.2753767
10.1063/1.2753767
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