Optimal resource allocation in practical quantum key distribution optical networks

In the application research of large-scale quantum communication network, one generally realizes resource allocation by constructing virtual service network and mapping it to actual physical space. this process, some assumptions are often made simplify model. For example, key in topology is assumed be a fixed value, that is, conditions performance differences supply caused different protocols ignored. This assumption may lead fail run appropriately practical applications. order solve above problems, from perspective link mapping, paper proposes an improved model algorithm with distribution optical as underlying which makes closer scenario. On hand, increasing constraints geographical location, range nodes mappable reasonably restricted. other hardware cost generation rate, evaluation index proposed allocate manage resources. addition, combining three mainstream (BB84, measurement-device-independent, twin-field), we construct universal realize recommendation optimal protocol management