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    Metropolitan Free-Space Quantum Networks tagged posts

    Toward Metropolitan Free-Space Quantum Networks

    October 13, 2023, Categories  Physics, Technology/Electronics

    Towards metropolitan free-space quantum networks
    Metropolitan entanglement-based free-space network. a) A standardized centrally located entanglement server (ES, black box) is streaming entangled photons into the network. Free-space channels are used to connect distant buildings and parts of a metropolitan area, while fiber connections may still be used in a complementary way, for example, to connect to offices within the central building. Each end user owns an application-specific quantum receiver subsystem (green boxes). b) The corresponding physical layer network topology. At the quantum communication layer, the network is a pairwise connected mesh, so that every end user can communicate with any other (not shown). c) A near-term extension possibility using several ESs and a central trusted node...
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