Performance Analysis of Free-space Quantum Key Distribution Using Multiple Spatial Modes
Autor: | He, Wenhua, Guha, Saikat, Shapiro, Jeffrey H., Bash, Boulat A. |
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Rok vydání: | 2021 |
Předmět: | |
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 |
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