A terrestrial BBM92 QKD demonstration with space-qualified entangled photons over 1.8 km produced 7.56 kbps key rate and 4.78% QBER using identical spectral-spatial filtering to the flight model, confirming ground-space segment compatibility.
Villar, inQuantum Computing, Communication, and Simulation VI(SPIE, 2026) p
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Terrestrial readiness campaign for space-to-ground quantum communications with a space-qualified entangled photon-pair system
A terrestrial BBM92 QKD demonstration with space-qualified entangled photons over 1.8 km produced 7.56 kbps key rate and 4.78% QBER using identical spectral-spatial filtering to the flight model, confirming ground-space segment compatibility.