Related papers: High-dimensional quantum key distribution using a multi-plane light converter

High-dimensional quantum key distribution using a multi-plane light converter

URL: http://arxiv.org/abs/2403.04210v2
Date: Tue, 28 May 2024 19:19:45 GMT
Title: High-dimensional quantum key distribution using a multi-plane light converter
Authors: Ohad Lib, Kfir Sulimany, Mateus Araújo, Michael Ben-Or, Yaron Bromberg,
Abstract summary: High-dimensional quantum key distribution (QKD) offers higher information capacity and stronger resilience to noise. These advantages are often hindered by the difficulty of realizing the required high-dimensional measurements and transformations. We implement a large-scale multi-plane light converter (MPLC) and program it as a high-dimensional mode sorter of spatial modes for QKD.
Score: 0.0
License: http://creativecommons.org/licenses/by/4.0/
Abstract: High-dimensional quantum key distribution (QKD) offers higher information capacity and stronger resilience to noise compared to its binary counterpart. However, these advantages are often hindered by the difficulty of realizing the required high-dimensional measurements and transformations. Here, we implement a large-scale multi-plane light converter (MPLC) and program it as a high-dimensional mode sorter of spatial modes for QKD. Using the MPLC, we demonstrate five-dimensional QKD with six mutually unbiased bases and 25-dimensional QKD with two mutually unbiased bases in the same experimental setup. Furthermore, we propose a construction of pairs of mutually unbiased bases that are robust to experimental errors, with measurement complexity scaling only with the square root of the encoded dimension. This approach paves the way for QKD implementations in higher dimensions.

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