Measurement-device-independent quantum communication with an untrusted source
Name
PhysRevA.92.012333.pdf
Size
768.75 KB
Format
Adobe PDF
Checksum (MD5)
526f0f454b35dbc52afcbf703a26457b
Author(s)
Xu, Feihu
Date Issued
July 2015
Journal
Physical Review A
Publisher
American Physical Society
Citation
Xu, Feihu. "Measurement-device-independent quantum communication with an untrusted source." Phys. Rev. A 92, 012333 (July 2015). © 2015 American Physical Society
Version
Final published version
Abstract
Measurement-device-independent quantum key distribution (MDI-QKD) can provide enhanced security compared to traditional QKD, and it constitutes an important framework for a quantum network with an untrusted network server. Still, a key assumption in MDI-QKD is that the sources are trusted. We propose here a MDI quantum network with a single untrusted source. We have derived a complete proof of the unconditional security of MDI-QKD with an untrusted source. Using simulations, we have considered various real-life imperfections in its implementation, and the simulation results show that MDI-QKD with an untrusted source provides a key generation rate that is close to the rate of initial MDI-QKD in the asymptotic setting. Our work proves the feasibility of the realization of a quantum network. The network users need only low-cost modulation devices, and they can share both an expensive detector and a complicated laser provided by an untrusted network server.
MIT Department
Massachusetts Institute of Technology. Research Laboratory of Electronics
Terms of Use
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.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/PhysRevA.92.012333
