dorsal/arxiv
View SchemaQuantum key distribution over 122 km of standard telecom fiber
| Authors | C. Gobby, Z. L. Yuan, A. J. Shields |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0412171 |
| URL | https://arxiv.org/abs/quant-ph/0412171 |
| DOI | 10.1063/1.1738173 |
| Journal | Applied Physics Letters 84, 3762-3764(2004) |
Abstract
We report the first demonstration of quantum key distribution over a standard telecom fiber exceeding 100 km in length. Through careful optimisation of the interferometer and single photon detector, we achieve a quantum bit error ratio of 8.9% for a 122km link, allowing a secure shared key to be formed after error correction and privacy amplification. Key formation rates of up to 1.9 kbit/sec are achieved depending upon fiber length. We discuss the factors limiting the maximum fiber length in quantum cryptography.
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"abstract": "We report the first demonstration of quantum key distribution over a standard\ntelecom fiber exceeding 100 km in length. Through careful optimisation of the\ninterferometer and single photon detector, we achieve a quantum bit error ratio\nof 8.9% for a 122km link, allowing a secure shared key to be formed after error\ncorrection and privacy amplification. Key formation rates of up to 1.9 kbit/sec\nare achieved depending upon fiber length. We discuss the factors limiting the\nmaximum fiber length in quantum cryptography.",
"arxiv_id": "quant-ph/0412171",
"authors": [
"C. Gobby",
"Z. L. Yuan",
"A. J. Shields"
],
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"quant-ph"
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"doi": "10.1063/1.1738173",
"journal_ref": "Applied Physics Letters 84, 3762-3764(2004)",
"title": "Quantum key distribution over 122 km of standard telecom fiber",
"url": "https://arxiv.org/abs/quant-ph/0412171"
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