The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 18, 2014
Filed:
Nov. 04, 2005
Yoshihisa Yamamoto, Stanford, CA (US);
Eleni Diamanti, Paris, FR;
Edo Waks, Gaithersburg, MD (US);
Kyo Inoue, Tokyo, JP;
Hiroki Takesue, Kanagawa, JP;
Toshimori Honjo, Kanagawa, JP;
Yoshihisa Yamamoto, Stanford, CA (US);
Eleni Diamanti, Paris, FR;
Edo Waks, Gaithersburg, MD (US);
Kyo Inoue, Tokyo, JP;
Hiroki Takesue, Kanagawa, JP;
Toshimori Honjo, Kanagawa, JP;
The Board of Trustees of the Leland Stanford Junior University, Palo Alto, CA (US);
NTT Corporation, Kanagawa, unknown;
Abstract
Differential phase shift (DPS) quantum key distribution (QKD) is provided, where the average number of photons per transmitted pulse is predetermined such that the secure key generation rate is maximal or nearly maximal, given other system parameters. These parameters include detector quantum efficiency, channel transmittance and pulse spacing (or clock rate). Additional system parameters that can optionally be included in the optimization include baseline error rate, sifted key error rate, detector dead time, detector dark count rate, and error correction algorithm performance factor. The security analysis leading to these results is based on consideration of a hybrid beam splitter and intercept-resend attack.