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Simple proof of security of the BB84 quantum key distribution protocol

Shor1, Preskill

  • 1AT&T Labs Research, Florham Park, New Jersey 07932, USA.

Physical Review Letters
|September 16, 2000
PubMed
Summary

We prove the 1984 Bennett and Brassard (BB84) quantum key distribution protocol is secure. This is achieved by first demonstrating a secure entanglement purification protocol, which then implies the security of BB84.

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