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Article: Multi-partite quantum cryptographic protocols with noisy ghz states
Title | Multi-partite quantum cryptographic protocols with noisy ghz states |
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Authors | |
Keywords | Entanglement distillation Entanglement Cryptography Conference key Quantum information Secret sharing Quantum cryptography Key agreement |
Issue Date | 2007 |
Publisher | Rinton Press. The Journal's web site is located at http://www.rintonpress.com/journals/qiconline.html |
Citation | Quantum Information and Computation, 2007, v. 7, n. 8, p. 689-715 How to Cite? |
Abstract | We propose a wide class of distillation schemes for multi-partite entangled states that are CSS-states. Our proposal provides not only superior effciency, but also new insights on the connection between CSS-states and bipartite graph states. We then apply our distillation schemes to the tri-partite case for three cryptographic tasks|namely, (a) conference key agreement, (b) quantum sharing of classical secrets and (c) third-man cryptography. Moreover, we construct \prepare-and-measure" protocols for the above three cryptographic tasks which can be implemented with the generation of only a single entangled pair at a time. This gives significant simplifcation over previous experimental implementations which require two entangled pairs generated simultaneously. We also study the yields of those protocols and the threshold values of the fdelity above which the protocols can function securely. Rather surprisingly, our protocols will function securely even when the initial state does not violate the standard Bell-inequalities for GHZ states. © Rinton Press. |
Persistent Identifier | http://hdl.handle.net/10722/285619 |
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 | Chen, Kai | - |
dc.contributor.author | Lo, Hoi Kwong | - |
dc.date.accessioned | 2020-08-18T04:56:13Z | - |
dc.date.available | 2020-08-18T04:56:13Z | - |
dc.date.issued | 2007 | - |
dc.identifier.citation | Quantum Information and Computation, 2007, v. 7, n. 8, p. 689-715 | - |
dc.identifier.issn | 1533-7146 | - |
dc.identifier.uri | http://hdl.handle.net/10722/285619 | - |
dc.description.abstract | We propose a wide class of distillation schemes for multi-partite entangled states that are CSS-states. Our proposal provides not only superior effciency, but also new insights on the connection between CSS-states and bipartite graph states. We then apply our distillation schemes to the tri-partite case for three cryptographic tasks|namely, (a) conference key agreement, (b) quantum sharing of classical secrets and (c) third-man cryptography. Moreover, we construct \prepare-and-measure" protocols for the above three cryptographic tasks which can be implemented with the generation of only a single entangled pair at a time. This gives significant simplifcation over previous experimental implementations which require two entangled pairs generated simultaneously. We also study the yields of those protocols and the threshold values of the fdelity above which the protocols can function securely. Rather surprisingly, our protocols will function securely even when the initial state does not violate the standard Bell-inequalities for GHZ states. © Rinton Press. | - |
dc.language | eng | - |
dc.publisher | Rinton Press. The Journal's web site is located at http://www.rintonpress.com/journals/qiconline.html | - |
dc.relation.ispartof | Quantum Information and Computation | - |
dc.subject | Entanglement distillation | - |
dc.subject | Entanglement | - |
dc.subject | Cryptography | - |
dc.subject | Conference key | - |
dc.subject | Quantum information | - |
dc.subject | Secret sharing | - |
dc.subject | Quantum cryptography | - |
dc.subject | Key agreement | - |
dc.title | Multi-partite quantum cryptographic protocols with noisy ghz states | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.scopus | eid_2-s2.0-42149136696 | - |
dc.identifier.volume | 7 | - |
dc.identifier.issue | 8 | - |
dc.identifier.spage | 689 | - |
dc.identifier.epage | 715 | - |
dc.identifier.isi | WOS:000251336100001 | - |
dc.identifier.partofdoi | 10.26421/QIC7.8 | - |
dc.identifier.issnl | 1533-7146 | - |