Long distance entanglement based quantum key distribution

Details Long distance entanglement based quantum key distribution Long distance entanglement based quantum key distribution

2000-08-08

arxiv.org/abs/quant-ph/0008039v2

Physics

Quantum Physics

19 pages, 1 table, 8 figures. Typos corrected, reference updated

Scientific paper

10.1103/PhysRevA.63.012309

A detailled analysis of quantum key distribution employing entangled states is presented. We tested a system based on photon pairs entangled in energy-time optimized for long distance transmission. It is based on a Franson type set-up for monitoring quantum correlations, and uses a protocol analogous to BB84. Passive state preparation is implemented by polarization multiplexing in the interferometers. We distributed a sifted key of 0.4 Mbits at a raw rate of 134 Hz and with an error rate of 8.6% over a distance of 8.5 kilometers. We discuss thoroughly the noise sources and practical difficulties associated with entangled states systems. Finally the level of security offered by this system is assessed and compared with that of faint laser pulses systems.

Affiliated with

Also associated with

No associations

Rating

Long distance entanglement based quantum key distribution 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 Long distance entanglement based quantum key distribution, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Long distance entanglement based quantum key distribution will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-429394