The Air Force Research Laboratory (AFRL) Starfire Optical Range (SOR) recently demonstrated quantum communication in daylight under conditions representative of space-to-Earth satellite links.

“This is the world’s first such demonstration, integrating quantum communication with a novel filtering technique enabled by adaptive optics (AO), a technology pioneered at the SOR,” said Dr. Kelly Hammett, director of the AFRL Directed Energy Directorate. A compact AO system was developed for this demonstration to allow quantum communication through-the-air in daylight. Free-space quantum communication in the daytime has been a challenge for the scientific community as it is often negatively impacted by background light.

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