A finite-size security analysis shows how phase imbalance in heterodyne receivers limits CVQKD key rates, and a local data transformation partially restores the lost performance.
Gaussian quantum information,
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Finite-size security of continuous-variable quantum key distribution with imperfect heterodyne measurement
A finite-size security analysis shows how phase imbalance in heterodyne receivers limits CVQKD key rates, and a local data transformation partially restores the lost performance.