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Title: Method for adding nodes to a quantum key distribution system

Abstract

An improved quantum key distribution (QKD) system and method are provided. The system and method introduce new clients at intermediate points along a quantum channel, where any two clients can establish a secret key without the need for a secret meeting between the clients. The new clients perform operations on photons as they pass through nodes in the quantum channel, and participate in a non-secret protocol that is amended to include the new clients. The system and method significantly increase the number of clients that can be supported by a conventional QKD system, with only a modest increase in cost. The system and method are compatible with a variety of QKD schemes, including polarization, time-bin, continuous variable and entanglement QKD.

Inventors:
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1170733
Patent Number(s):
8,964,989
Application Number:
14/083,495
Assignee:
UT-Battelle LLC (Oak Ridge, TN) ORO
DOE Contract Number:
AC05-00OR22725
Resource Type:
Patent
Resource Relation:
Patent File Date: 2013 Nov 19
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS

Citation Formats

Grice, Warren P. Method for adding nodes to a quantum key distribution system. United States: N. p., 2015. Web.
Grice, Warren P. Method for adding nodes to a quantum key distribution system. United States.
Grice, Warren P. Tue . "Method for adding nodes to a quantum key distribution system". United States. doi:. https://www.osti.gov/servlets/purl/1170733.
@article{osti_1170733,
title = {Method for adding nodes to a quantum key distribution system},
author = {Grice, Warren P},
abstractNote = {An improved quantum key distribution (QKD) system and method are provided. The system and method introduce new clients at intermediate points along a quantum channel, where any two clients can establish a secret key without the need for a secret meeting between the clients. The new clients perform operations on photons as they pass through nodes in the quantum channel, and participate in a non-secret protocol that is amended to include the new clients. The system and method significantly increase the number of clients that can be supported by a conventional QKD system, with only a modest increase in cost. The system and method are compatible with a variety of QKD schemes, including polarization, time-bin, continuous variable and entanglement QKD.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Feb 24 00:00:00 EST 2015},
month = {Tue Feb 24 00:00:00 EST 2015}
}

Patent:

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