Quantum data locking for high-rate private communication
Author(s)
Lupo, Cosmo; Lloyd, Seth
DownloadLupo-2015-Quantum data locking.pdf (931.5Kb)
PUBLISHER_CC
Publisher with Creative Commons License
Creative Commons Attribution
Terms of use
Metadata
Show full item recordAbstract
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.
Date issued
2015-03Department
Massachusetts Institute of Technology. Department of Mechanical Engineering; Massachusetts Institute of Technology. Research Laboratory of ElectronicsJournal
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
ISSN
1367-2630