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This field trial validates a practical architecture for long-distance quantum networks by combining adaptive optics with room-temperature detectors to overcome atmospheric turbulence over an 18-km free-space link. The achievement demonstrates that high-order wavefront correction can efficiently couple free-space signals into standard telecom fibers, enabling direct multiplexing without untrusted intermediate measurements. This progress moves quantum key distribution closer to real-world deployment by reducing reliance on cryogenic cooling for the detection stage while maintaining secure key generation rates.
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University of Padova and ThinkQuantum Demonstrate 18-km Intermodal Free-Space QKD with Room-Temperature Detectors

Quantum Computing Report2 min de cititArticolul și perspectiva sunt în engleză.

Researchers from the University of Padova, Italian photonics firm ThinkQuantum s.r.l., and the National Research Council of Italy (CNR-IFN) have published a real-time field trial of an intermodal quantum key distribution (QKD) system in npj Quantum Information. The experiment connected a remote optical transmitter on Monte Grande to an urban Optical Ground Station (OGS) at [...] The post University of Padova and ThinkQuantum Demonstrate 18-km Intermodal Free-Space QKD with Room-Temperature Detectors appeared first on Quantum Computing Report.

Researchers from the University of Padova, Italian photonics firm ThinkQuantum s.r.l., and the National Research Council of Italy (CNR-IFN) have published a real-time field trial of an intermodal quantum key distribution (QKD)…

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