Could a Quantum Switch Catch Spies Without Spending Key Bits?
A photonic quantum switch flags eavesdropping through interference, hinting at key distribution that preserves key bits—if major security gaps can be closed.
quantum key distribution
Inside a 10-Kilometer Link, Single Photons Shared the Beam
A truck-to-tower experiment sent quantum key material and classical data along one 10.31 km optical path, revealing its promise and bottlenecks.