US 12,250,301 B2
Method and system for continuous-variable quantum key distribution
Tobias Fehenberger, Meiningen (DE); and Hans Schmiedel, Meiningen (DE)
Assigned to ADVA NETWORK SECURITY GMBH, Berlin (DE)
Filed by ADVA NETWORK SECURITY GMBH, Berlin (DE)
Filed on Apr. 6, 2023, as Appl. No. 18/131,693.
Claims priority of application No. 22172861 (EP), filed on May 11, 2022.
Prior Publication US 2023/0370255 A1, Nov. 16, 2023
Int. Cl. H03M 13/00 (2006.01); H04B 10/70 (2013.01); H04L 1/00 (2006.01); H04L 9/08 (2006.01)
CPC H04L 9/0852 (2013.01) [H04B 10/70 (2013.01); H04L 1/004 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method for continuous-variable quantum key distribution, CVQKD, between a sender sub-system and a receiver sub-system; the method comprising at least the steps of:
transmitting a quantum key distribution, QKD, signal from a quantum communication transmitter to a quantum communication receiver over a quantum communication channel;
performing post-processing including forward error correction, FEC, as a part of reverse reconciliation between the receiver sub-system and the sender sub-system, wherein erroneous frames are discarded for key establishment the reverse reconciliation is performed with a reconciliation efficiency, VRE p,
characterized in that
a value of the reconciliation efficiency, VRE p, is set to be larger than 1.