Performance Analysis of Free-space Quantum Key Distribution Using Multiple Spatial Modes

Autor:	He, Wenhua, Guha, Saikat, Shapiro, Jeffrey H., Bash, Boulat A.
Rok vydání:	2021
Předmět:	Quantum Physics Physics - Optics
Druh dokumentu:	Working Paper
DOI:	10.1364/OE.426556
Popis:	In the diffraction-limited near-field propagation regime, free-space optical quantum key distribution (QKD) systems can employ multiple spatial modes to improve their key rate. Here, we analyze QKD using the non-orthogonal flat-top focused beams. Although they suffer from a rate penalty, their ease of implementation makes them an attractive alternative to the well-studied orthonormal Laguerre-Gauss (LG) modes. Indeed, in the presence of turbulence, the non-orthogonal modes may achieve higher QKD rate than the LG modes. Comment: 13 pages, 5 figures (if I count all the subfigures the total number is 9) submitted to Optics express
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2105.01858 Zobrazit plný text záznamu View this record from Arxiv