Volume 84, Number 2, October 2008
|Number of page(s)||6|
|Published online||14 October 2008|
Quantum direct communication with continuous variables
MIT - Research Laboratory of Electronics - Cambridge MA 02139, USA
2 Computer Science, University of York - YO10 5DD York, UK, EU
3 CNISM and Dipartimento di Fisica, Università di Camerino - I-62032 Camerino, Italy, EU
4 MIT - Department of Mechanical Engineering - Cambridge MA 02139, USA
Corresponding author: email@example.com
Accepted: 12 September 2008
We show how continuous-variable systems can allow the direct communication of messages with an acceptable degree of privacy. This is possible by combining a suitable phase-space encoding of the plain message with real-time checks of the quantum communication channel. The resulting protocol works properly when a small amount of noise affects the quantum channel. If this noise is non-tolerable, the protocol stops leaving a limited amount of information to a potential eavesdropper.
PACS: 03.67.Dd – Quantum cryptography and communication security / 03.67.Hk – Quantum communication / 42.50.-p – Quantum optics
© EPLA, 2008
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.