期刊
PHYSICAL REVIEW LETTERS
卷 85, 期 2, 页码 441-444出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.85.441
关键词
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We prove that the 1984 protocol of Bennett and Brassard (BB84) for quantum key distribution is secure. We first give a key distribution protocol based on entanglement purification, which can be proven secure using methods from Lo and Chau's proof of security for a similar protocol. We then show that the security of this protocol implies the security of BB84. The entanglement purification based protocol uses Calderbank-Shor-Steane codes, and properties of these codes are used to remove the use of quantum computation from the Lo-Chau protocol.
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