dorsal/arxiv
View SchemaEnhanced Autocompensating Quantum Cryptography System
| Authors | Donald S. Bethune, Martha Navarro, William P. Risk |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0104089 |
| URL | https://arxiv.org/abs/quant-ph/0104089 |
| DOI | 10.1364/AO.41.001640 |
| Journal | Applied Optics LP 41 (2002) 1640-1648 |
Abstract
We have improved the hardware and software of our autocompensating system for quantum key distribution by replacing bulk optical components at the end stations with fiber-optic equivalents and implementing software that synchronizes end-station activities, communicates basis choices, corrects errors and performs privacy amplification over a local area network. The all fiber-optic arrangement provides stable, efficient and high-contrast routing of the photons. The low bit error rate leads to high error correction efficiency and minimizes data sacrifice during privacy amplification. Characterization measurements made on a number of commercial avalanche photodiodes are presented that highlight the need for improved devices tailored specifically for quantum information applications. A scheme for frequency shifting the photons returning from Alice's station to allow them to be distinguished from backscattered noise photons is also described. OCIS codes: 030.5260, 060.0060, 060.2360, 230.2240, 270.5570.
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"abstract": "We have improved the hardware and software of our autocompensating system for\nquantum key distribution by replacing bulk optical components at the end\nstations with fiber-optic equivalents and implementing software that\nsynchronizes end-station activities, communicates basis choices, corrects\nerrors and performs privacy amplification over a local area network. The all\nfiber-optic arrangement provides stable, efficient and high-contrast routing of\nthe photons. The low bit error rate leads to high error correction efficiency\nand minimizes data sacrifice during privacy amplification. Characterization\nmeasurements made on a number of commercial avalanche photodiodes are presented\nthat highlight the need for improved devices tailored specifically for quantum\ninformation applications. A scheme for frequency shifting the photons returning\nfrom Alice\u0027s station to allow them to be distinguished from backscattered noise\nphotons is also described.\n OCIS codes: 030.5260, 060.0060, 060.2360, 230.2240, 270.5570.",
"arxiv_id": "quant-ph/0104089",
"authors": [
"Donald S. Bethune",
"Martha Navarro",
"William P. Risk"
],
"categories": [
"quant-ph"
],
"doi": "10.1364/AO.41.001640",
"journal_ref": "Applied Optics LP 41 (2002) 1640-1648",
"title": "Enhanced Autocompensating Quantum Cryptography System",
"url": "https://arxiv.org/abs/quant-ph/0104089"
},
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