Hilma Karlsson

The main goal of the NQCIS project is to build a quantum key distribution (QKD) network centered in Stockholm and that is adapted to the particular geographical properties of Sweden. The center of the network will be the AlbaNova hub, which will also be open to selected users to test the QKD technology. From there, fiber links will reach two nodes in the metropolitan area (<20 km in length) and two longer distance points (80-150 km-long links), which will require also a trusted node. The network will use both continuous and discrete-variable devices, the latter being augmented by superconducting nanowire detectors. Furthermore, we are refurbishing an astronomical telescope to serve as an optical ground station for QKD, giving satellite-tracking capabilities. The project has also goals that go beyond deployment. One is advancing research in quantum communication with a study of stabilization techniques for twin field QKD and of noise contribution hindering different QKD protocols, and the other is forming the Swedish quantum work force through coordinated courses, seminars, and outreach events. This poster gives an overview of the entire project.