Quantum Jamming Reveals Eavesdropping Through Entanglement Collapse

Researchers at the University of Hong Kong and Jagiellonian University have advanced quantum jamming—a technique that detects intrusions on quantum-encrypted communications by identifying when adversaries destroy particle entanglement. When eavesdroppers attempt to intercept quantum key distribution systems, the measurement necessarily collapses entanglement states, creating detectable signatures. The work builds on growing research into quantum cryptographic defenses as quantum computing capabilities mature.