dorsal/arxiv
View SchemaControlling excess noise in fiber optics continuous variables quantum key distribution
| Authors | Jérôme Lodewyck, Thierry Debuisschert, Rosa Tualle-Brouri, Philippe Grangier |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0511104 |
| URL | https://arxiv.org/abs/quant-ph/0511104 |
| DOI | 10.1103/PhysRevA.72.050303 |
| Journal | PRA, 72, 050303(R) (2005) |
Abstract
We describe a continuous variables coherent states quantum key distribution system working at 1550 nm, and entirely made of standard fiber optics and telecom components, such as integrated-optics modulators, couplers and fast InGaAs photodiodes. The setup is composed of an emitter randomly modulating a coherent state in the complex plane with a doubly Gaussian distribution, and a receiver based on a shot noise limited time-resolved homodyne detector. By using a reverse reconciliation protocol, the device can transfer a raw key rate up to 1 Mb/s, with a proven security against Gaussian or non-Gaussian attacks. The dependence of the secret information rate of the present fiber set-up is studied as a function of the line transmission and excess noise.
{
"annotation_id": "f3598add-26af-4682-93e7-0a56e59afc06",
"date_created": "2026-03-02T18:02:20.422000Z",
"date_modified": "2026-03-02T18:02:20.422000Z",
"file_hash": "2eb16ae5201046ea689125030d6d9d2a6a69a603f1ec4867f4c18a3ab5a4c580",
"private": false,
"record": {
"abstract": "We describe a continuous variables coherent states quantum key distribution\nsystem working at 1550 nm, and entirely made of standard fiber optics and\ntelecom components, such as integrated-optics modulators, couplers and fast\nInGaAs photodiodes. The setup is composed of an emitter randomly modulating a\ncoherent state in the complex plane with a doubly Gaussian distribution, and a\nreceiver based on a shot noise limited time-resolved homodyne detector. By\nusing a reverse reconciliation protocol, the device can transfer a raw key rate\nup to 1 Mb/s, with a proven security against Gaussian or non-Gaussian attacks.\nThe dependence of the secret information rate of the present fiber set-up is\nstudied as a function of the line transmission and excess noise.",
"arxiv_id": "quant-ph/0511104",
"authors": [
"J\u00e9r\u00f4me Lodewyck",
"Thierry Debuisschert",
"Rosa Tualle-Brouri",
"Philippe Grangier"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.72.050303",
"journal_ref": "PRA, 72, 050303(R) (2005)",
"title": "Controlling excess noise in fiber optics continuous variables quantum key distribution",
"url": "https://arxiv.org/abs/quant-ph/0511104"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "df1eec5e-67a4-4d08-88ad-6f0c1fc02c39",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}