dorsal/arxiv
View SchemaNoisy Preprocessing and the Distillation of Private States
| Authors | Joseph M. Renes, Graeme Smith |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0603262 |
| URL | https://arxiv.org/abs/quant-ph/0603262 |
| DOI | 10.1103/PhysRevLett.98.020502 |
| Journal | Phys. Rev. Lett. 98, 020502 (2007) |
Abstract
We provide a simple security proof for prepare & measure quantum key distribution protocols employing noisy processing and one-way postprocessing of the key. This is achieved by showing that the security of such a protocol is equivalent to that of an associated key distribution protocol in which, instead of the usual maximally-entangled states, a more general {\em private state} is distilled. Besides a more general target state, the usual entanglement distillation tools are employed (in particular, Calderbank-Shor-Steane (CSS)-like codes), with the crucial difference that noisy processing allows some phase errors to be left uncorrected without compromising the privacy of the key.
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"abstract": "We provide a simple security proof for prepare \u0026 measure quantum key\ndistribution protocols employing noisy processing and one-way postprocessing of\nthe key. This is achieved by showing that the security of such a protocol is\nequivalent to that of an associated key distribution protocol in which, instead\nof the usual maximally-entangled states, a more general {\\em private state} is\ndistilled. Besides a more general target state, the usual entanglement\ndistillation tools are employed (in particular, Calderbank-Shor-Steane\n(CSS)-like codes), with the crucial difference that noisy processing allows\nsome phase errors to be left uncorrected without compromising the privacy of\nthe key.",
"arxiv_id": "quant-ph/0603262",
"authors": [
"Joseph M. Renes",
"Graeme Smith"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevLett.98.020502",
"journal_ref": "Phys. Rev. Lett. 98, 020502 (2007)",
"title": "Noisy Preprocessing and the Distillation of Private States",
"url": "https://arxiv.org/abs/quant-ph/0603262"
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