Quantum key distribution with bright entangled beams

Silberhorn, Christine; Korolkova, N; Leuchs, Gerd

doi:10.1103/PhysRevLett.88.167902

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Quantum key distribution with bright entangled beams

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Silberhorn, C., Korolkova, N., & Leuchs, G. (2002). Quantum key distribution with bright entangled beams. PHYSICAL REVIEW LETTERS, 88(16): 167902. doi:10.1103/PhysRevLett.88.167902.

Cite as: https://hdl.handle.net/21.11116/0000-0002-97D4-4

Abstract

We suggest a quantum cryptographic scheme using continuous EPR-like
correlations of bright optical beams. For binary key encoding, the
continuous information is discretized in a novel way by associating a
respective measurement, amplitude, or phase, with a bit value "1" or
"0." The secure key distribution is guaranteed by the quantum
correlations. No predetermined information is sent through the quantum
channel contributing to the security of the system.