Quantum data locking for high-rate private communication
Name
Lupo-2015-Quantum data locking.pdf
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931.55 KB
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Adobe PDF
Checksum (MD5)
2dfca699e3dea7fe5f6b1c4e90424ef4
Author(s)
Lupo, Cosmo
Lloyd, Seth
Date Issued
March 2015
Journal
New Journal of Physics
Publisher
IOP Publishing
Citation
Lupo, Cosmo, and Seth Lloyd. “Quantum Data Locking for High-Rate Private Communication.” New Journal of Physics 17, no. 3 (March 1, 2015): 033022. © 2015 IOP Publishing Ltd and Deutsche Physikalische Gesellschaft
Version
Final published version
Abstract
We show that, if the accessible information is used as a security quantifier, quantum channels with a certain symmetry can convey private messages at a tremendously high rate, as high as less than one bit below the rate of non-private classical communication. This result is obtained by exploiting the quantum data locking effect. The price to pay to achieve such a high private communication rate is that accessible information security is in general not composable. However, composable security holds against an eavesdropper who is forced to measure her share of the quantum system within a finite time after she gets it.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Massachusetts Institute of Technology. Research Laboratory of Electronics
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Creative Commons Attribution
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1088/1367-2630/17/3/033022
