dorsal/arxiv
View SchemaQuantum key distribution based on private states: unconditional security over untrusted channels with zero quantum capacity
| Authors | Karol Horodecki, Michal Horodecki, Pawel Horodecki, Debbie Leung, Jonathan Oppenheim |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0608195 |
| URL | https://arxiv.org/abs/quant-ph/0608195 |
| DOI | 10.1109/TIT.2008.921870 |
| Journal | IEEE Transactions on Information Theory Vol 54 Issue 6 p2604-2620 (2008) |
Abstract
We prove unconditional security for a quantum key distribution (QKD) protocol based on distilling pbits (twisted ebits) [quant-ph/0309110] from an arbitrary untrusted state that is claimed to contain distillable key. Our main result is that we can verify security using only public communication -- via parameter estimation of the given untrusted state. The technique applies even to bound entangled states, thus extending QKD to the regime where the available quantum channel has zero quantum capacity. We also show how to convert our purification-based QKD schemes to prepare-measure schemes.
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"abstract": "We prove unconditional security for a quantum key distribution (QKD) protocol\nbased on distilling pbits (twisted ebits) [quant-ph/0309110] from an arbitrary\nuntrusted state that is claimed to contain distillable key. Our main result is\nthat we can verify security using only public communication -- via parameter\nestimation of the given untrusted state. The technique applies even to bound\nentangled states, thus extending QKD to the regime where the available quantum\nchannel has zero quantum capacity. We also show how to convert our\npurification-based QKD schemes to prepare-measure schemes.",
"arxiv_id": "quant-ph/0608195",
"authors": [
"Karol Horodecki",
"Michal Horodecki",
"Pawel Horodecki",
"Debbie Leung",
"Jonathan Oppenheim"
],
"categories": [
"quant-ph"
],
"doi": "10.1109/TIT.2008.921870",
"journal_ref": "IEEE Transactions on Information Theory Vol 54 Issue 6 p2604-2620\n (2008)",
"title": "Quantum key distribution based on private states: unconditional security over untrusted channels with zero quantum capacity",
"url": "https://arxiv.org/abs/quant-ph/0608195"
},
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