Attacking quantum key distribution with single-photon two-qubit quantum logic
Quantum Physics
2009-11-11 v2
Abstract
The Fuchs-Peres-Brandt (FPB) probe realizes the most powerful individual attack on Bennett-Brassard 1984 quantum key distribution (BB84 QKD) by means of a single controlled-NOT (CNOT) gate. This paper describes a complete physical simulation of the FPB-probe attack on polarization-based BB84 QKD using a deterministic CNOT constructed from single-photon two-qubit quantum logic. Adding polarization-preserving quantum nondemolition measurements of photon number to this configuration converts the physical simulation into a true deterministic realization of the FPB attack.
Cite
@article{arxiv.quant-ph/0508051,
title = {Attacking quantum key distribution with single-photon two-qubit quantum logic},
author = {Jeffrey H. Shapiro and Franco N. C. Wong},
journal= {arXiv preprint arXiv:quant-ph/0508051},
year = {2009}
}
Comments
8 pages, 9 figures; references added, 1 new figure, appendix expanded; accepted for publication in Phys. Rev. A