Vacuum Beam Guide for Quantum Communication

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Abstract:: Quantum communication at large distances is pivotal for the advancement of secure communication channels in various fields, offering unparalleled security. This technology's potential is exemplified in applications requiring low photon losses over vast distances, such as long-distance baseline interferometry. Our approach focuses on minimizing these losses through the innovative use of Vacuum Beam Guides. These guides offer a promising alternative to methods like satellite-based systems and quantum repeaters, potentially revolutionizing long-distance quantum communication. A Vacuum Beam Guide functions as a vacuum-sealed pipe that facilitates the transmission of quantum states over long distances with minimal loss. In this study, we focus on determining the optimal parameters for the practical implementation of Vacuum Beam Guides to facilitate quantum communication from the west coast to the east coast of the United States. This research provides key insights into the construction and operation of Vacuum Beam Guides, including critical parameters like lens separation and focal length for a given length of the vacuum tube. By addressing these challenges, we aim to pave the way for a more robust and efficient quantum communication infrastructure.

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LIGO Document T2400254-v1