Security proof of quantum key distribution with detection efficiency mismatch

Details Security proof of quantum key distribution with detection efficiency mismatch Security proof of quantum key distribution with detection efficiency mismatch

2008-02-26

arxiv.org/abs/0802.3788v2

Quantum Information and Computation, vol. 9, pp. 0131-0165 (2009)

Physics

Quantum Physics

35 pages, 7 figures

Scientific paper

In theory, quantum key distribution (QKD) offers unconditional security based on the laws of physics. However, as demonstrated in recent quantum hacking theory and experimental papers, detection efficiency loophole can be fatal to the security of practical QKD systems. Here, we describe the physical origin of detection efficiency mismatch in various domains including spatial, spectral, and time domains and in various experimental set-ups. More importantly, we prove the unconditional security of QKD even with detection efficiency mismatch. We explicitly show how the key generation rate is characterized by the maximal detection efficiency ratio between the two detectors. Furthermore, we prove that by randomly switching the bit assignments of the detectors, the effect of detection efficiency mismatch can be completely eliminated.

Affiliated with

Also associated with

No associations

Rating

Security proof of quantum key distribution with detection efficiency mismatch 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 Security proof of quantum key distribution with detection efficiency mismatch, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Security proof of quantum key distribution with detection efficiency mismatch will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-606867