物理
量子纠缠
干扰(通信)
光子
高斯分布
湍流
指数
拓扑(电路)
帕顿
频道(广播)
量子力学
统计物理学
量子
电信
数学
计算机科学
机械
强子
哲学
组合数学
语言学
作者
Xiangjiang Bao,Yun Zhu,Jicheng Wang,Zheng-Da Hu
出处
期刊:Physica Scripta
[IOP Publishing]
日期:2023-01-15
卷期号:98 (3): 035101-035101
标识
DOI:10.1088/1402-4896/acb328
摘要
Abstract We establish propagation models for distributing autofocusing hypergeometric-Gaussian (HyGG) beams via non-Kolmogorov atmospheric turbulence in the single-photon and biphoton cases. Analytical expressions of the channel capacity and entanglement are employed to explore the communication performance in turbulence. It can be demonstrated that in the single-photon case, a lower hollowness parameter and larger topological charge could contribute to the anti-interference ability of HyGG beams. Such an anti-interference ability could be affected by the autofocusing distance more severely for beams with larger topological charges. In addition, the channel capacity of beams at a certain distance decays rapidly at first before it grows steadily with the increase in the power-law exponent of the non-Kolmogorov spectrum. For the biphoton case, the higher hollowness parameter, larger power-law exponent of the non-Kolmogorov spectrum and larger topological charge make HyGG beams maintain a high concurrence at longer distances. We believe that our results could serve as a reference for improving the quality of orbital-angular-momentum communication of HyGG beams via atmospheric turbulence.
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