dorsal/arxiv
View SchemaQuantum Key Distribution with High Loss: Toward Global Secure Communication
| Authors | W. -Y. Hwang |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0211153 |
| URL | https://arxiv.org/abs/quant-ph/0211153 |
| DOI | 10.1103/PhysRevLett.91.057901 |
| Journal | Physical Review Letters 91, 057901 (2003) |
Abstract
We propose a decoy-state method to overcome the photon-number-splitting attack for Bennett-Brassard 1984 quantum key distribution protocol in the presence of high loss: A legitimate user intentionally and randomly replaces signal pulses by multi-photon pulses (decoy-states). Then they check the loss of the decoy-states. If the loss of the decoy-states is abnormally less than that of signal pulses, the whole protocol is aborted. Otherwise, to continue the protocol, they estimate loss of signal multi-photon pulses based on that of decoy-states. This estimation can be done with an assumption that the two losses have similar values, that we justify.
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"abstract": "We propose a decoy-state method to overcome the photon-number-splitting\nattack for Bennett-Brassard 1984 quantum key distribution protocol in the\npresence of high loss: A legitimate user intentionally and randomly replaces\nsignal pulses by multi-photon pulses (decoy-states). Then they check the loss\nof the decoy-states. If the loss of the decoy-states is abnormally less than\nthat of signal pulses, the whole protocol is aborted. Otherwise, to continue\nthe protocol, they estimate loss of signal multi-photon pulses based on that of\ndecoy-states. This estimation can be done with an assumption that the two\nlosses have similar values, that we justify.",
"arxiv_id": "quant-ph/0211153",
"authors": [
"W. -Y. Hwang"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevLett.91.057901",
"journal_ref": "Physical Review Letters 91, 057901 (2003)",
"title": "Quantum Key Distribution with High Loss: Toward Global Secure Communication",
"url": "https://arxiv.org/abs/quant-ph/0211153"
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