Long-distance practical quantum key distribution by entanglement swapping

Details Long-distance practical quantum key distribution by entanglement swapping Long-distance practical quantum key distribution by entanglement swapping

2010-12-27

arxiv.org/abs/1012.5675v2

Opt. Express 19, 3004-3018 (2011)

Physics

Quantum Physics

14 pages, 9 figures; published in Optics Express

Scientific paper

10.1364/OE.19.003004

We develop a model for practical, entanglement-based long-distance quantum key distribution employing entanglement swapping as a key building block. Relying only on existing off-the-shelf technology, we show how to optimize resources so as to maximize secret key distribution rates. The tools comprise lossy transmission links, such as telecom optical fibers or free space, parametric down-conversion sources of entangled photon pairs, and threshold detectors that are inefficient and have dark counts. Our analysis provides the optimal trade-off between detector efficiency and dark counts, which are usually competing, as well as the optimal source brightness that maximizes the secret key rate for specified distances (i.e. loss) between sender and receiver.

Affiliated with

Also associated with

No associations

Rating

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

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-427588