Quantum key distribution with bright entangled beams

Details Quantum key distribution with bright entangled beams Quantum key distribution with bright entangled beams

2001-09-03

arxiv.org/abs/quant-ph/0109009v3

Phys. Rev. Lett. 88, 167902 (2002)

Physics

Quantum Physics

4 pages, 1 figure, 1 table

Scientific paper

10.1103/PhysRevLett.88.167902

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 pre-determined information is sent through the quantum channel contributing to the security of the system.

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