Analysis of a High-Dimensional Extended B92 Protocol

Quantum key distribution (QKD) allows two parties to establish a shared secret key that is secure against adversaries with unlimited computational power. One such protocol named B92 is quite appealing due to its simplicity but is highly sensitive to channel noise. In this work, we investigate a high...

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Bibliographic Details
Published inQuantum information processing Vol. 20; no. 10
Main Authors Iqbal, Hasan, Krawec, Walter O.
Format Journal Article
LanguageEnglish
Published New York Springer US 01.10.2021
Springer Nature B.V
Subjects
Channel noise
Channels
Damping
Data Structures and Information Theory
Depolarization
Information theory
Mathematical Physics
Noise sensitivity
Physics
Physics and Astronomy
Quantum Computing
Quantum cryptography
Quantum Information Technology
Quantum Physics
Spintronics
Quantum information
Quantum key distribution
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Summary:Quantum key distribution (QKD) allows two parties to establish a shared secret key that is secure against adversaries with unlimited computational power. One such protocol named B92 is quite appealing due to its simplicity but is highly sensitive to channel noise. In this work, we investigate a high-dimensional variant of an extended version of the B92 protocol and show that it can distill a key over high noise channels. The protocol we consider requires that Alice sends only three high-dimensional states and Bob only performs partial measurements. We perform an information-theoretic security analysis of our protocol and compare its key rate to that of a high-dimensional BB84 protocol over depolarization and amplitude damping channels.
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ISSN:1570-0755
1573-1332
DOI:10.1007/s11128-021-03276-w