Method for adding nodes to a quantum key distribution system

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

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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:: Grice, Warren P

Issue Date:: 2015-02-24

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1170733

Patent Number(s):: 8964989

Application Number:: 14/083,495

Assignee:: UT-Battelle LLC (Oak Ridge, TN)

Patent Classifications (CPCs):: H - ELECTRICITY H04 - ELECTRIC COMMUNICATION TECHNIQUE H04L - TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION

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H - ELECTRICITY H04 - ELECTRIC COMMUNICATION TECHNIQUE H04L - TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
H04L9/0852 - {Quantum cryptography
H04L9/0855 - {involving additional nodes, e.g. quantum relays, repeaters, intermediate nodes or remote nodes}
H04L2209/24 - Key scheduling, i.e. generating round keys or sub-keys for block encryption

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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.

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                    Grice, Warren P. Method for adding nodes to a quantum key distribution system.  United States.

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                    Grice, Warren P. Tue .  
        "Method for adding nodes to a quantum key distribution system".  United States.  https://www.osti.gov/servlets/purl/1170733.

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@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         = {2015},

  month        = {2}

}

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