QUANTUM KEY DISTRIBUTION LABORATORY DEMONSTRATION
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Authors
Brault, Jack R.
Subjects
secure communication
quantum key distribution
QKD
entanglement
Bennet-Brassard 1984 protocol
BB84
Eckert
quantum key distribution
QKD
entanglement
Bennet-Brassard 1984 protocol
BB84
Eckert
Advisors
Narducci, Francesco A.
Date of Issue
2021-12
Date
Publisher
Monterey, CA; Naval Postgraduate School
Language
Abstract
Quantum key distribution (QKD) is a method of secure key distribution which provides protection against the tampering and interception of information.
Following the Bennet-Brassard 1984 (BB84) protocol of QKD, we select randomly from a set of bases in which to produce polarized photons and send the photons to a receiver, who measures them in a basis randomly selected from the same set. The fact that quantum mechanics prohibits the exact copying of a photon ensures that any eavesdropper who intercepts, measures, and attempts to pass the photons on to the receiver will be unable to faithfully reproduce that signal. The presence of the eavesdropper can then be detected, prior to any exchange of information, by an examination of the error rate between portions of the keys generated by the sender and receiver.
Using a biphoton source, we have constructed a QKD system for use in research towards naval applications.
Type
Thesis
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Series/Report No
Department
Physics (PH)
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NPS Report Number
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Distribution Statement
Approved for public release. Distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.