Considerations for satellite QKD in an urban environment

Alexander Ling; Clarence Liu

doi:10.1117/12.2622849

30 May 2022 Considerations for satellite QKD in an urban environment

Alexander Ling, Clarence Liu

Proceedings Volume PC12089, Advanced Photon Counting Techniques XVI; PC1208909 (2022) https://doi.org/10.1117/12.2622849
Event: SPIE Defense + Commercial Sensing, 2022, Orlando, Florida, United States

Abstract

Satellites can act as trusted nodes to link up QKD networks that are far apart. This requires the satellite to be able to communicate with ground receivers that are located near the end-users, typically in an urban environment. Such environments lower the signal-to-noise ratio achievable and can reduce the effectiveness of satellite-based communication. I will discuss the variables that must be considered when discussing satellite-based QKD; these variables are also expected to affect other types of free-space quantum communication. In particular, I will use Singapore as an example of a sea-level dense urban environment, with high humidity and high probability of cloud cover, to discuss the challenges that need to be overcome.

Conference Presentation

Citation Download Citation

Alexander Ling and Clarence Liu "Considerations for satellite QKD in an urban environment", Proc. SPIE PC12089, Advanced Photon Counting Techniques XVI, PC1208909 (30 May 2022); https://doi.org/10.1117/12.2622849

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