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

Journal Article · Sun Jan 15 00:00:00 EST 2006 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.73.0· OSTI ID:20786660

Shapiro, Jeffrey H; Wong, Franco N. C. ^[1]

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1. Massachusetts Institute of Technology, Research Laboratory of Electronics, Cambridge, Massachusetts 02139 (United States)

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.

• OSTI ID: 20786660
• Journal Information: Physical Review. A, Vol. 73, Issue 1; Other Information: DOI: 10.1103/PhysRevA.73.012315; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
DISTRIBUTION
GATING CIRCUITS
LOGIC CIRCUITS
OPTICS
PHOTONS
POLARIZATION
QUANTUM CRYPTOGRAPHY
QUBITS
SIMULATION