Modelling the impact of multi-photon source on the performance of quantum key distribution cryptography

Michael Naeem; Mahmoud Taha; Mohamed S. Abdelgawad; Sameh O. Abdellatif

doi:10.1117/12.2572924

20 August 2020 Modelling the impact of multi-photon source on the performance of quantum key distribution cryptography

Michael Naeem, Mahmoud Taha, Mohamed S. Abdelgawad, Sameh O. Abdellatif

Proceedings Volume 11471, Quantum Nanophotonic Materials, Devices, and Systems 2020; 1147112 (2020) https://doi.org/10.1117/12.2572924
Event: SPIE Nanoscience + Engineering, 2020, Online Only

Conference Poster

Abstract

Quantum key distribution introduces a new way of key exchange through a public quantum channel between two communicating nodes. However, the first introduced BB84 protocol was theoretically verifying security based on single photon sources. At this time, it was hard to achieve such device. Therefore, it was a challenging aspect to prove the security of QKD system using coherent light sources or “multi emitting photon source”, which introduces Photon number splitting attacks. We are interested to simulate and investigate the QKD system using coherent laser sources and study the PNS attack. The idea involves that; Eve can crash a beam of light, absorbing some photons using QND measurement and transmit the others. Such attack can make Eve dominant to the situation and gain much information of the key without the fear of getting exposed to the communicating parties. Herein, this paper discusses some useful solution to detect such attack and proves the security of QKD even with weak laser sources.

Conference Presentation

Citation Download Citation

Michael Naeem, Mahmoud Taha, Mohamed S. Abdelgawad, and Sameh O. Abdellatif "Modelling the impact of multi-photon source on the performance of quantum key distribution cryptography", Proc. SPIE 11471, Quantum Nanophotonic Materials, Devices, and Systems 2020, 1147112 (20 August 2020); https://doi.org/10.1117/12.2572924

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