Intrusion Detection With Quantum Mechanics: A Photonic Quantum Fence
Travis S. Humble, Ryan S. Bennink, Warren P. Grice, Israel J. Owens · 2008
We describe the use of quantum-mechanically entangled photons for sensing intrusions across a physical perimeter. Our approach to intrusion detection uses the no-cloning principle of quantum information science as protection against an intruder’s ability to spoof a sensor receiver using a ‘classical ’ intercept-resend attack. We explore the bounds on detection using quantum detection and estimation theory, and we experimentally demonstrate the underlying principle of entanglement-based detection using the visibility derived from polarization-correlation measurements.