Quantum-Secured Surveillance Based on Mach-Zehnder Interferometry

TL;DR

This paper introduces a quantum-based surveillance method utilizing Mach-Zehnder interferometry to detect intrusion attempts through interference pattern analysis, enhancing security against interception and path redirection.

Contribution

The study presents a novel quantum surveillance protocol that leverages Mach-Zehnder interferometry for intrusion detection, capable of identifying sophisticated attack techniques.

Findings

Effective detection of path redirection attacks

Ability to identify intercept-resend intrusion methods

Quantitative analysis of interference patterns under normal and attack conditions

Abstract

We present a method for intrusion detection which is based on the Mach-Zehnder interference effect. This device provides monitored surveillance by continuously measuring the intensity of light collected by a pair of photodetectors. We find that our protocol allows for the detection of intrusion attempts which employ path- redirection and/or intercept-resend techniques. Expectation values for the registered output flux are provided for normal and interrupted operation.