Gigahertz quantum key distribution with InGaAs avalanche photodiodes

Details Gigahertz quantum key distribution with InGaAs avalanche photodiodes Gigahertz quantum key distribution with InGaAs avalanche photodiodes

2008-05-22

arxiv.org/abs/0805.3414v1

Appl. Phys. Lett. 92, 201104(2008)

Physics

Quantum Physics

4 pages, 4 figures

Scientific paper

10.1063/1.2931070

We report a demonstration of quantum key distribution (QKD) at GHz clock rates with InGaAs avalanche photodiodes (APDs) operating in a self-differencing mode. Such a mode of operation allows detection of extremely weak avalanches so that the detector afterpulse noise is sufficiently suppressed. The system is characterized by a secure bit rate of 2.37 Mbps at 5.6 km and 27.9 kbps at 65.5 km when the fiber dispersion is not compensated. After compensating the fiber dispersion, the QKD distance is extended to 101 km, resulting in a secure key rate of 2.88 kbps. Our results suggest that InGaAs APDs are very well suited to GHz QKD applications.

Affiliated with

Also associated with

No associations

Rating

Gigahertz quantum key distribution with InGaAs avalanche photodiodes does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Gigahertz quantum key distribution with InGaAs avalanche photodiodes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gigahertz quantum key distribution with InGaAs avalanche photodiodes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-510683