Photon addition-subtraction distillation protocol improves quantum teleportation fidelity by 7.7% and entanglement by ~105% over satellite FSO downlinks, enabling more robust long-distance quantum communication in realistic atmospheric conditions.

#QuantumTeleportation #SatelliteQuantum #Research

First free-space twin-field QKD demonstration over 14.2 km urban channels achieving repeaterless capacity—eliminating auxiliary phase-stabilization, enabling satellite-based quantum networks with resilience to atmospheric fluctuations.

#QuantumCryptography #QuantumNetworking #SatelliteQuantum