A Quantum Key as the Fiber Optic Security Sensor
M. Życzkowski, Marcin Kowalski · Acta Physica Polonica A · 2013
The paper describes the methodology of identifying an interference in the optical ber.The paper presents the technology widely known as quantum key distribution.The quantum key distribution is based on the technique of constant comparison of quantum characteristics of the input light source and its characteristics at the end of the ber optic.Methodology of presented work includes the evaluation of the functional objectives through the constructive assumptions for the laboratory models development.This paper presents the model of a system based on the comparison of polarization states of light quanta using two asymmetric MachZender interferometers as transmitting and receiving systems to enable compensation of polarization state changes at the input and output of the ber optics sensing cable.Continuous monitoring of the state of the reference signal, the specic changes of natural or ambient eects on the ber will attempt to identify interference in the optical waveguide as a change of the polarization of the quantum states of the light.The authors indicate the possibility of using such ber optic sensor as a security sensor to protect the extensive critical infrastructure facilities.In this article the future research conception of using compressed sensing algorithms for data compression in quantum key distribution systems is presented.