High-dimensional encoding in entanglement-based QKD achieves optimal efficiency at finite photon pair production rates, boosting secret key rates by up to ten times compared to single-qubit approaches in low-signal satellite scenarios.
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Photon Efficiency of High-Dimensional Quantum Key Distribution
High-dimensional encoding in entanglement-based QKD achieves optimal efficiency at finite photon pair production rates, boosting secret key rates by up to ten times compared to single-qubit approaches in low-signal satellite scenarios.