Quantum enigma machine: Experimentally demonstrating quantum data locking
Name
PhysRevA.94.022315.pdf
Size
2.69 MB
Format
Adobe PDF
Checksum (MD5)
82f7c1e2bdc82fa13b3cf4554220c417
Author(s)
Lum, Daniel J.
Howell, John C.
Allman, M. S.
Gerrits, Thomas
Verma, Varun B.
Nam, Sae Woo
Lupo, Cosmo
Lloyd, Seth
Date Issued
August 2016
Journal
Physical Review A
Publisher
American Physical Society
Citation
Lum, Daniel J.; Howell, John C.; Allman, M. S.; Gerrits, Thomas; Verma, Varun B.; Nam, Sae Woo; Lupo, Cosmo and Lloyd, Seth. "Quantum enigma machine: Experimentally demonstrating quantum data locking." Physical Review A 94, 022315 (August 2016): 1-10 © 2016 American Physical Society
Version
Final published version
Abstract
Shannon proved in 1949 that information-theoretic-secure encryption is possible if the encryption key is used only once, is random, and is at least as long as the message itself. Notwithstanding, when information is encoded in a quantum system, the phenomenon of quantum data locking allows one to encrypt a message with a shorter key and still provide information-theoretic security. We present one of the first feasible experimental demonstrations of quantum data locking for direct communication and propose a scheme for a quantum enigma machine that encrypts 6 bits per photon (containing messages, new encryption keys, and forward error correction bits) with less than 6 bits per photon of encryption key while remaining information-theoretically secure.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Massachusetts Institute of Technology. Research Laboratory of Electronics
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevA.94.022315
