dorsal/arxiv
View SchemaUnconditional security of coherent-state quantum key distribution with strong phase-reference pulse
| Authors | Masato Koashi |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0403131 |
| URL | https://arxiv.org/abs/quant-ph/0403131 |
| DOI | 10.1103/PhysRevLett.93.120501 |
Abstract
We prove the unconditional security of a quantum key distribution protocol in which bit values are encoded in the phase of a weak coherent-state pulse relative to a strong reference pulse. In contrast to implementations in which a weak pulse is used as a substitute for a single-photon source, the achievable key rate is found to decrease only linearly with the transmission of the channel.
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"abstract": "We prove the unconditional security of a quantum key distribution protocol in\nwhich bit values are encoded in the phase of a weak coherent-state pulse\nrelative to a strong reference pulse. In contrast to implementations in which a\nweak pulse is used as a substitute for a single-photon source, the achievable\nkey rate is found to decrease only linearly with the transmission of the\nchannel.",
"arxiv_id": "quant-ph/0403131",
"authors": [
"Masato Koashi"
],
"categories": [
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],
"doi": "10.1103/PhysRevLett.93.120501",
"title": "Unconditional security of coherent-state quantum key distribution with strong phase-reference pulse",
"url": "https://arxiv.org/abs/quant-ph/0403131"
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