Details
| Original language | English |
|---|---|
| Journal | Physical Review Letters |
| Volume | 106 |
| Publication status | Published - 6 Oct 2010 |
Abstract
Keywords
- quant-ph
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In: Physical Review Letters, Vol. 106, 06.10.2010.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Extremal Quantum Correlations and Cryptographic Security
AU - Franz, T.
AU - Furrer, F.
AU - Werner, R. F.
N1 - 7 pages, 2 figures, revised version, accepted for publication in Phys. Rev. Lett
PY - 2010/10/6
Y1 - 2010/10/6
N2 - We investigate a fundamental property of device independent security in quantum cryptography by characterizing probability distributions which are necessarily independent of the measurement results of any eavesdropper. We show that probability distributions that are secure in this sense are exactly the extremal quantum probability distributions. This allows us to give a characterization of security in algebraic terms. We apply the method to common examples for two-party as well as multi-party setups and present a scheme for verifying security of probability distributions with two parties, two measurement settings, and two outcomes.
AB - We investigate a fundamental property of device independent security in quantum cryptography by characterizing probability distributions which are necessarily independent of the measurement results of any eavesdropper. We show that probability distributions that are secure in this sense are exactly the extremal quantum probability distributions. This allows us to give a characterization of security in algebraic terms. We apply the method to common examples for two-party as well as multi-party setups and present a scheme for verifying security of probability distributions with two parties, two measurement settings, and two outcomes.
KW - quant-ph
U2 - 10.1103/PhysRevLett.106.250502
DO - 10.1103/PhysRevLett.106.250502
M3 - Article
VL - 106
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
ER -