Using quantum entanglement to secure ground-to-satellite timing

Researchers at MIT have proposed a novel method to secure ground-to-satellite timing signals using quantum entanglement, a phenomenon where particles remain interconnected regardless of distance. This approach aims to enhance the reliability of Global Navigation Satellite Systems (GNSS), which underpin critical infrastructure like mobile networks, financial transactions, and emergency services. By leveraging entangled particles, the system could resist tampering or spoofing, a growing concern as GNSS signals become increasingly vital yet vulnerable. The method builds on existing atomic clock technology but introduces quantum principles to fortify timing accuracy and security.