Citation

Alaghbari, Khaled Ab. Aziz and Rumyantsev, Konstantin and Eltaif, Tawfig and Elmabrok, Osama and Lim, Heng Siong (2021) Adaptive Modulation for Continuous-Variable Quantum Key Distribution With Real Local Oscillators Under Phase Attack. IEEE Photonics Journal, 13 (5). pp. 1-7. ISSN 1943-0647

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Abstract

Continuous-variable quantum key distribution (CV-QKD) with a real local oscillator (LO) experiences a phase attack security challenge due to the reference pulses transmitted along with quantum signals over an unsecure quantum channel. In this paper, a phase attack on reference pulses of CV-QKD with a real LO is investigated. The performance of the discrete-modulated (DM) CV-QKD under this attack is analyzed analytically and by simulation, and compared with the Gaussian-modulated (GM) CV-QKD. It is found that such an attack by an eavesdropper's, significantly reduce the transmission distance for the GM based CV-QKD, whereas, the DM based CV-QKD shows a high tolerance to high phase noise. Based on phase attack monitoring, a new adaptive modulation scheme is proposed for CV-QKD to adaptively switch between GM and DM so as to maintain the optimum secret key rate.

Item Type:	Article
Uncontrolled Keywords:	Cryptography, CV-QKD, quantum cryptography, phase attack, discrete modulation, adaptive modulation
Subjects:	Q Science > QA Mathematics > QA150-272.5 Algebra
Divisions:	Faculty of Engineering and Technology (FET)
Depositing User:	Ms Nurul Iqtiani Ahmad
Date Deposited:	29 Oct 2021 05:01
Last Modified:	29 Oct 2021 05:01
URII:	http://shdl.mmu.edu.my/id/eprint/9731

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