Complete elimination of information leakage in continuous-variable quantum communication channels

Christian S. Jacobsen, Lars S. Madsen, Vladyslav C. Usenko, Radim Fillip, Ulrik L. Andersen*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

248 Downloads (Pure)

Abstract

In all lossy communication channels realized to date, information is inevitably leaked to a potential eavesdropper. Here we present a communication protocol that does not allow for any information leakage to a potential eavesdropper in a purely lossy channel. By encoding information into a restricted Gaussian alphabet of squeezed states we show, both theoretically and experimentally, that the Holevo information between the eavesdropper and the intended recipient can be exactly zero in a purely lossy channel while minimized in a noisy channel. This result is of fundamental interest, but might also have practical implications in extending the distance of secure quantum key distribution.
Original languageEnglish
Journaln p j Quantum Information
Volume4
Issue number1
Number of pages6
ISSN2056-6387
DOIs
Publication statusPublished - 2018

Fingerprint Dive into the research topics of 'Complete elimination of information leakage in continuous-variable quantum communication channels'. Together they form a unique fingerprint.

Cite this