Impacts of low-order aberrations on capacity of orbital-angular-momentum quantum states  

作　　者：Zheng-Da Hu Jicheng Wang Yun Zhu Mengmeng Li Sergei Khakhomov Igor Semchenko 

机构地区：[1]Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology,School of Science,Jiangnan University,Wuxi 214122,China [2]Department of Communication Engineering,Nanjing University of Science and Technology,Nanjing 210000,China [3]Departments of Optics and General Physics,Francisk Skorina Gomel State University,Sovetskaya Str.104,Gomel 246019,Belarus

出　　处：《Communications in Theoretical Physics》2023年第5期97-103,共7页理论物理通讯（英文版）

基　　金：Project supported by the National Key Research and Development Program of China(Grant No.2022YFE0122300);the National Natural Science Foundation of China(Grant Nos.61871202 and 11811530052)

摘　　要：We use Hypergeometric Gaussian-II(HyGG-II)modes to investigate the impacts of non-Kolmogorov atmospheric turbulence on the Holevo channel capacity of a quantum communication scheme.The capacity of HyGG-II modes can be higher than that of Laguerre-Gaussian modes via modulating the hollowness parameter.The influences of low-order turbulence aberrations including tilt,defocus,astigmatism,and coma on the capacity are also explored.Generally,tilt aberration dominates among all low-order aberrations and defocus and astigmatism aberrations are always negligible.By contrast,the effect of coma aberration can be enhanced to be non-negligible when the turbulence strength or the channel zenith angle is enhanced.We also show that only the total and tilt aberrations are sensitive to the non-Kolmogorov power-law exponent.Our results may contribute to the quantum optical communication as well as aberration compensation in turbulent channels utilizing the novel family of vortex beams.

关 键 词：atmospheric turbulence orbital angular momentum hypergeometric-Gaussian-II beam Holevo channel capacity 

分 类 号：O431.2[机械工程—光学工程]