Attacking quantum key distribution with single-photon two-qubit quantum logic

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.

arXiv comment8 pages, 9 figures; references added, 1 new figure, appendix expanded; accepted for publication in Phys. Rev. A

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Cited by in corpus (7)

• Complete physical simulation of the entangling-probe attack on the BB84 protocol
• Asymptotically Optimal prepare-measure Quantum Key Distribution Protocol
• An entangling-probe attack on Shor's algorithm for factorization
• On the optimality of individual entangling-probe attacks against BB84 quantum key distribution
• On conclusive eavesdropping and measures of mutual information in quantum key distribution
• Mixed basis quantum key distribution with linear optics
• Individual attacks with generalized discrimination and inadequacy of some information measures