dorsal/arxiv
View SchemaUnconditional privacy over channels which cannot convey quantum information
| Authors | Karol Horodecki, Michal Horodecki, Pawel Horodecki, Debbie Leung, Jonathan Oppenheim |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0702077 |
| URL | https://arxiv.org/abs/quant-ph/0702077 |
| DOI | 10.1103/PhysRevLett.100.110502 |
| Journal | Phys. Rev. Lett. 100, 110502 (2008) |
Abstract
By sending systems in specially prepared quantum states, two parties can communicate without an eavesdropper being able to listen. The technique, called quantum cryptography, enables one to verify that the state of the quantum system has not been tampered with, and thus one can obtain privacy regardless of the power of the eavesdropper. All previous protocols relied on the ability to faithfully send quantum states. In fact, until recently, they could all be reduced to a single protocol where security is ensured though sharing maximally entangled states. Here we show this need not be the case -- one can obtain verifiable privacy even through some channels which cannot be used to reliably send quantum states.
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"abstract": "By sending systems in specially prepared quantum states, two parties can\ncommunicate without an eavesdropper being able to listen. The technique, called\nquantum cryptography, enables one to verify that the state of the quantum\nsystem has not been tampered with, and thus one can obtain privacy regardless\nof the power of the eavesdropper. All previous protocols relied on the ability\nto faithfully send quantum states. In fact, until recently, they could all be\nreduced to a single protocol where security is ensured though sharing maximally\nentangled states. Here we show this need not be the case -- one can obtain\nverifiable privacy even through some channels which cannot be used to reliably\nsend quantum states.",
"arxiv_id": "quant-ph/0702077",
"authors": [
"Karol Horodecki",
"Michal Horodecki",
"Pawel Horodecki",
"Debbie Leung",
"Jonathan Oppenheim"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevLett.100.110502",
"journal_ref": "Phys. Rev. Lett. 100, 110502 (2008)",
"title": "Unconditional privacy over channels which cannot convey quantum information",
"url": "https://arxiv.org/abs/quant-ph/0702077"
},
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