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Article: Proof of unconditional security of six-state quantum key distribution scheme
Title | Proof of unconditional security of six-state quantum key distribution scheme |
---|---|
Authors | |
Keywords | Security Quantum key distribution Quantum cryptography Six-state scheme |
Issue Date | 2001 |
Citation | Quantum Information and Computation, 2001, v. 1, n. 2, p. 81-94 How to Cite? |
Abstract | We prove the unconditional security of the standard six-state scheme for quantum key distribution (QKD). We demonstrate its unconditional security up to a bit error rate of 12.7 percents, by allowing only one-way classical communications in the error correction/privacy amplification procedure between Alice and Bob. This shows a clear advantage of the six-state scheme over another standard scheme - BB84, which has been proven to be secure up to only about 11 percents, if only one-way classical communications are allowed. Our proof technique is a generalization of that of Shor-Preskill's proof of security of BB84. We show that a advantage of the six-state scheme lies in the Alice and Bob's ability to establish rigorously from their test sample the non-trivial mutual information between the bit-flip and phase error patterns. A modified version of the degenerate quantum codes studied by DiVincenzo, Shor and Smolin is employed in our proof. |
Persistent Identifier | http://hdl.handle.net/10722/285545 |
ISSN | 2023 Impact Factor: 0.7 2023 SCImago Journal Rankings: 0.236 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Lo, Hoi Kwong | - |
dc.date.accessioned | 2020-08-18T04:56:01Z | - |
dc.date.available | 2020-08-18T04:56:01Z | - |
dc.date.issued | 2001 | - |
dc.identifier.citation | Quantum Information and Computation, 2001, v. 1, n. 2, p. 81-94 | - |
dc.identifier.issn | 1533-7146 | - |
dc.identifier.uri | http://hdl.handle.net/10722/285545 | - |
dc.description.abstract | We prove the unconditional security of the standard six-state scheme for quantum key distribution (QKD). We demonstrate its unconditional security up to a bit error rate of 12.7 percents, by allowing only one-way classical communications in the error correction/privacy amplification procedure between Alice and Bob. This shows a clear advantage of the six-state scheme over another standard scheme - BB84, which has been proven to be secure up to only about 11 percents, if only one-way classical communications are allowed. Our proof technique is a generalization of that of Shor-Preskill's proof of security of BB84. We show that a advantage of the six-state scheme lies in the Alice and Bob's ability to establish rigorously from their test sample the non-trivial mutual information between the bit-flip and phase error patterns. A modified version of the degenerate quantum codes studied by DiVincenzo, Shor and Smolin is employed in our proof. | - |
dc.language | eng | - |
dc.relation.ispartof | Quantum Information and Computation | - |
dc.subject | Security | - |
dc.subject | Quantum key distribution | - |
dc.subject | Quantum cryptography | - |
dc.subject | Six-state scheme | - |
dc.title | Proof of unconditional security of six-state quantum key distribution scheme | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.scopus | eid_2-s2.0-0013207242 | - |
dc.identifier.volume | 1 | - |
dc.identifier.issue | 2 | - |
dc.identifier.spage | 81 | - |
dc.identifier.epage | 94 | - |
dc.identifier.isi | WOS:000208901600004 | - |
dc.identifier.partofdoi | 10.26421/QIC1.2 | - |
dc.identifier.issnl | 1533-7146 | - |