Nature Podcast Tiny satellite sets new record for secure quantum communication
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Mar 19, 2025 Join Lizzie Gibney, a Nature reporter, as she dives into groundbreaking advancements in quantum communication. A tiny satellite has achieved record distances—sending secure messages over 12,000 km! Hear about the innovative laser-based system that encrypts information, including a photo of the Great Wall of China. Lizzie discusses the potential for a global network of quantum communications, emphasizing the balance between security and international collaboration. Discover how this technology could redefine privacy in our digital age!
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Great Wall Message
- Jianwei Pan and his team sent a secure message via a microsatellite.
- The message, which included a picture of the Great Wall of China, travelled over 12,900 km.
Quantum Network Feasibility
- Smaller, cheaper satellite systems make global quantum communication networks more feasible.
- Current satellite limitations require either a network of satellites or a geostationary satellite for continuous connection.
Building a Quantum Network
- For continuous global quantum communication, develop a network of satellites or use a geostationary satellite.
- Consider the potential for both privacy benefits and military applications of this technology.