dorsal/arxiv
View SchemaGeneral theory for decoy-state quantum key distribution with arbitrary number of intensities
| Authors | Masahito Hayashi |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0702251 |
| URL | https://arxiv.org/abs/quant-ph/0702251 |
| DOI | 10.1088/1367-2630/9/8/284 |
| Journal | New J. Phys. 9 284 (2007) |
Abstract
We develop a general theory for quantum key distribution (QKD) in both the forward error correction and the reverse error correction cases when the QKD system is equipped with phase-randomized coherent light with arbitrary number of decoy intensities. For this purpose, generalizing Wang's expansion, we derive a convex expansion of the phase-randomized coherent state. We also numerically check that the asymptotic key generation rates are almost saturated when the number of decoy intensities is three.
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"abstract": "We develop a general theory for quantum key distribution (QKD) in both the\nforward error correction and the reverse error correction cases when the QKD\nsystem is equipped with phase-randomized coherent light with arbitrary number\nof decoy intensities. For this purpose, generalizing Wang\u0027s expansion, we\nderive a convex expansion of the phase-randomized coherent state. We also\nnumerically check that the asymptotic key generation rates are almost saturated\nwhen the number of decoy intensities is three.",
"arxiv_id": "quant-ph/0702251",
"authors": [
"Masahito Hayashi"
],
"categories": [
"quant-ph"
],
"doi": "10.1088/1367-2630/9/8/284",
"journal_ref": "New J. Phys. 9 284 (2007)",
"title": "General theory for decoy-state quantum key distribution with arbitrary number of intensities",
"url": "https://arxiv.org/abs/quant-ph/0702251"
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