Bell's shadows from satellites
Stav Haldar, Rachel L. McDonald, Sage Ducoing, Ivan Agullo

TL;DR
This paper simulates satellite-ground quantum links to identify regions where Bell tests can be successfully performed, aiding the development of satellite-based quantum networks and protocols.
Contribution
It introduces the concept of Bell violation shadows, regions on Earth where Bell tests are feasible with satellite constellations, enhancing quantum network planning.
Findings
Bell violation shadows move with satellite constellations
Regions suitable for Bell tests can be predicted and mapped
Insights aid in designing satellite-mediated quantum protocols
Abstract
Establishing reliable quantum links between a network of satellites and ground stations is a crucial step towards realizing a wide range of satellite-based quantum protocols, including global quantum networks, distributed sensing, quantum key distribution, and quantum clock synchronization. In this article, we envision a network of satellites and ground stations where quantum links are created through the exchange of entangled photon pairs. We simulate the dynamics of a satellite constellation and a set of Bell tests between the constellation and ground stations. We identify the regions on Earth where Bell tests can be successfully conducted with a satellite or a set of them, at a specified level of confidence. These regions move with the constellation and will be referred to as "Bell violation shadows". We demonstrate that these shadows provide valuable insights for the study and…
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Taxonomy
TopicsSpace Science and Extraterrestrial Life · Space exploration and regulation
