{
  "id": "1608.04220",
  "version": "v1",
  "published": "2016-08-15T09:47:20.000Z",
  "updated": "2016-08-15T09:47:20.000Z",
  "title": "Experimental transmission of quantum digital signatures over 90-km of installed optical fiber using a differential phase shift quantum key distribution system",
  "authors": [
    "Robert J. Collins",
    "Ryan Amiri",
    "Mikio Fujiwara",
    "Toshimori Honjo",
    "Kaoru Shimizu",
    "Kiyoshi Tamaki",
    "Masahiro Takeoka",
    "Erika Andersson",
    "Gerald S. Buller",
    "Masahide Sasaki"
  ],
  "categories": [
    "quant-ph"
  ],
  "abstract": "Quantum digital signatures apply quantum mechanics to the problem of guaranteeing message integrity and non-repudiation with information-theoretical security, which are complementary to the confidentiality realized by quantum key distribution. Previous experimental demonstrations have been limited to transmission distances of less than 5-km of optical fiber in a laboratory setting. Here we report the first demonstration of quantum digital signatures over installed optical fiber as well as the longest transmission link reported to date. This demonstration used a 90-km long differential phase shift quantum key distribution system to achieve approximately one signed bit per second - an increase in the signature generation rate of several orders of magnitude over previous optical fiber demonstrations.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2016-08-15T09:47:20.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "differential phase shift quantum",
      "quantum digital signatures",
      "installed optical fiber",
      "distribution system",
      "experimental transmission"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}