Enabling Efficient Quantum Communications with Adaptive Optics

被引：0

作者：

Martinez, Noelia ^{[1
]}

Torras, Joan ^{[2
]}

Alonso, Angel ^{[2
]}

Magraso Garcia, Carlos ^{[2
]}

Montilla, Iciar ^{[2
]}

Rodriguez Ramos, Luis Fernando ^{[2
]}

Socas Robinson, Jorge ^{[2
]}

机构：

[1] Australian Natl Univ, Res Sch Astron & Astrophys, Mt Stromlo Observ, Cotter Rd, Weston, Australia

[2] Inst Astrofis Canarias IAC, Via Lactea S-N, San Cristobal De La Lagu, Spain

来源：

FREE-SPACE LASER COMMUNICATIONS XXXIV | 2022年 / 11993卷

关键词：

Adaptive Optics; SMF Coupling Efficiency; Quantum Communications; TURBULENCE; LIGHT;

D O I：

10.1117/12.2608420

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

Superconducting nanowire detectors fed by single mode fibres are essential to minimise dark counts in a quantum communication receiver. Efficient coupling of the received light to the single mode fibre is fundamental for the system performance, but it gets deeply affected by the atmospheric turbulence. Adaptive Optics measure and correct for the atmosphere effect on the light optimising the fibre coupling. An Adaptive Optics system is proposed to be installed at the ground station that will receive quantum key distribution from a geostationary satellite. Numerical simulations have been performed for this scenario as well as for a horizontal link on the ground; the improvement in the fibre coupling have been assessed with and without atmospheric turbulence correction. The present paper encapsulates the simulation framework and main findings, showing the potential for this technology in the quantum communications niche.

引用

页数：10

共 12 条

[1]

Buck J., 2004, Fundamentals of Optical Fibers, P352

[2] Experimental demonstration of single-mode fiber coupling over relatively strong turbulence with adaptive optics [J].