Modeling high quantum bit rate QKD systems over optical fiber

Michal Mlejnek; Nikolay A. Kaliteevskiy; Daniel A. Nolan

doi:10.1117/12.2306875

21 May 2018 Modeling high quantum bit rate QKD systems over optical fiber

Michal Mlejnek, Nikolay A. Kaliteevskiy, Daniel A. Nolan

Proceedings Volume 10674, Quantum Technologies 2018; 1067416 (2018) https://doi.org/10.1117/12.2306875
Event: SPIE Photonics Europe, 2018, Strasbourg, France

Abstract

There is considerable interest in finding conditions under which the quantum key distribution (QKD) propagation distances over fiber and secure key rate (SKR) are maximized for a given acceptable quantum bit error rate. One way to increase the secure key rate is to increase quantum bit rate, i.e. use shorter pulses. Short pulses propagating in a fiber are subject to temporal broadening caused by chromatic dispersion (CD) which leads to inter-symbol-interference and quantum bit-error rate increase. Current commercial QKD systems employ 1 Gb/s quantum bit rate sources, and the transition to 10 Gb/s system is being researched. While not very important in the 1 Gb/s, the effect of CD cannot be neglected in 10 Gb/s or higher quantum bit rate systems.

Citation Download Citation

Michal Mlejnek, Nikolay A. Kaliteevskiy, and Daniel A. Nolan "Modeling high quantum bit rate QKD systems over optical fiber", Proc. SPIE 10674, Quantum Technologies 2018, 1067416 (21 May 2018); https://doi.org/10.1117/12.2306875

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