Abstract
Here, we demonstrate that a practical continuous-variable quantum key distribution (QKD) protocol relying on the Gaussian modulation of coherent states features secret key rates that cannot be achieved with standard qubit discrete-variable QKD protocols. Notably, we report a practical postprocessing that allows us to extract more than 1 bit of secret key per channel use.
5 More- Received 4 June 2014
- Revised 21 September 2014
DOI:https://doi.org/10.1103/PhysRevA.90.042329
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