Unconditional Security of Practical Quantum Key Distribution

Details Unconditional Security of Practical Quantum Key Distribution Unconditional Security of Practical Quantum Key Distribution

2004-02-23

arxiv.org/abs/quant-ph/0402170v1

Physics

Quantum Physics

36 pages

Scientific paper

We present an extension of the first proof for the unconditional security of the BB84 quantum key distribution protocol which was given by Mayers. We remove the constraint that a perfect BB84 quantum source is required and the proof given here covers a range of practical quantum sources. Nothing is assumed about the detector except that the efficiency with which signals are detected is basis independent.

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