Unit:
Κατεύθυνση Smart Telecom and Sensing Networks
(SMARTNET)Πληροφορική
Supervisors info:
1. Dimitris Syvridis , Professor ,Department of Informatics and Telecommunication ,National and Kapodistrian University of Athens.
2. Dr. Thomas Nikas , External Instrctors, Department of Informatics and Telecommunication ,National and Kapodistrian University of Athens.
3. Dr Aikaterini Mandilara , Senior Researcher,Department of Informatics and Telecommunication ,National and Kapodistrian University of Athens.
Original Title:
Simulating a Classical Analogue of a Quantum Key Distribution Protocol with VPI
Translated title:
English
Summary:
Quantum Key Distribution (QKD) is an evolving research area and receiving growing attention as it provides unconditional security in data communication. The BB84 QKD protocol is a fundamental protocol in quantum communication. In the original BB84 protocol the polarization of the photon is employed as the relevant degree of freedom but since that time more convenient scenarios have emerged. The VPI-Photonics software does not offer the features of quantum, for example a single or few photon source and photo diode that can detect single or few photons. So it is difficult to build a QKD model for the users. Instead of this, they already offer a plethora of built in classical photonic modules with a lack of quantum detail. This Classical analogue model of phase-encoding BB84 QKD protocol helps to understand all the details of original phase-encoding BB84 QKD protocol and explore the sensitivity of to various photonic parameters such as the fiber dispersion, PMD etc. We proved that with the help of experiments, that the functioning of this classical protocol is same as the original QKD protocol except the security feature, as this classical protocol can be easily eavesdropped. The major difference of this classical protocol is that the optical pulses have much higher number of photons then the original QKD protocol where the average number of photons per coherent pulse is less than 1.
Main subject category:
Science
Keywords:
Quantum cryptography (QC), Quantum Key Distribution (QKD), secure Communication
