Physics – Quantum Physics
Scientific paper
2004-05-18
Phys. Rev. Lett. 95, 010503 (2005)
Physics
Quantum Physics
Clarifications and minor revisions in response to comments. Final version; to appear in Phys. Rev. Lett
Scientific paper
10.1103/PhysRevLett.95.010503
Standard quantum key distribution protocols are provably secure against eavesdropping attacks, if quantum theory is correct. It is theoretically interesting to know if we need to assume the validity of quantum theory to prove the security of quantum key distribution, or whether its security can be based on other physical principles. The question would also be of practical interest if quantum mechanics were ever to fail in some regime, because a scientifically and technologically advanced eavesdropper could perhaps use post-quantum physics to extract information from quantum communications without necessarily causing the quantum state disturbances on which existing security proofs rely. Here we describe a key distribution scheme provably secure against general attacks by a post-quantum eavesdropper who is limited only by the impossibility of superluminal signalling. The security of the scheme stems from violation of a Bell inequality.
Barrett Jonathan
Hardy Lucien
Kent Adrian
No associations
LandOfFree
No Signalling and 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 No Signalling and Quantum Key Distribution, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and No Signalling and Quantum Key Distribution will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-366604