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Researchers have demonstrated a method to generate quantum-entangled photons directly from sunlight using a specialized solar concentrator, potentially reducing reliance on energy-intensive lasers for satellite-based secure communications. This breakthrough suggests that abundant natural light sources can match the performance of traditional laser approaches in bandwidth-adjusted metrics, paving the way for more sustainable and accessible quantum networks.
Researchers generate quantum entanglement using sunlight
image: Using a new cone-shaped solar concentrator, researchers showed that sunlight can be used to create entangled photons. This could one day enable satellites to create secure encryption keys using the sunlight already abundant in space view more Credit: Florian Sterl Using a new cone-shaped solar concentrator, researchers showed that sunlight can be used to create entangled photons. This could one day enable satellites to create secure encryption keys using the sunlight already abundant in space WASHINGTON — Today’s quantum technologies rely on energy-intensive lasers, raising concerns that scaling…
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