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Title: Long-haul high rate quantum key distribution

Multiple bit values can be encoded on a single photon in a quantum key distribution (QKD) system using a plurality of sidebands of an optical carrier frequency. Computational and conjugate bases can be defined, and photons decoded based on a selected state from either basis. If n sidebands are available, as many as log.sub.2n bits can be encoded on a single photon. Errors in detected bit values due to selection of an incorrect basis state or other errors can be at least partially corrected by bit distillation to identity bit strings for which a transmitter and a receiver record the same values, without insecure transmission of these values.
Inventors:
; ; ; ;
Issue Date:
OSTI Identifier:
1469101
Assignee:
Los Alamos National Security, LLC (Los Alamos, NM) LANL
Patent Number(s):
10,044,504
Application Number:
14/333,419
Contract Number:
AC52-06NA25396
Resource Relation:
Patent File Date: 2014 Jul 16
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
97 MATHEMATICS AND COMPUTING