Iterative Secret Key Rate Adapting with Error Minimization for Continuous-Variable Quantum Key Distribution

Laszlo Gyongyosi

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arXiv · 1610.02823

Iterative Secret Key Rate Adapting with Error Minimization for Continuous-Variable Quantum Key Distribution

Laszlo Gyongyosi

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Abstract

We define an iterative error-minimizing secret key adapting method for multicarrier CVQKD. A multicarrier CVQKD protocol uses Gaussian subcarrier quantum continuous variables (CVs) for the transmission. The proposed method allows for the parties to reach a given target secret key rate with minimized error rate through the Gaussian sub-channels by a sub-channel adaption procedure. The adaption algorithm iteratively determines the optimal transmit conditions to achieve the target secret key rate and the minimal error rate over the sub-channels. The solution requires no complex calculations or computational tools, allowing for easy implementation for experimental CVQKD scenarios.

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Laszlo Gyongyosi. 2016-10-10. Iterative Secret Key Rate Adapting with Error Minimization for Continuous-Variable Quantum Key Distribution. https://arxiv.org/abs/1610.02823

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