DOI: 10.22184/2070-8963.2022.108.8.44.51

The prospects for the use of multicore optical fiber for the construction of quantum networks are analyzed. It is shown that such multicore fiber has a number of advantages in implementing the technology of quantum key distribution between several groups of subscribers. Using an interuniversity quantum network with a total length of 17 km, test experiments were carried out on the simultaneous implementation of three quantum and four classical communication channels development through one multicore fiber. The possibility of simultaneous transmission of classical and quantum data through a multicore fiber using both phase and polarization coding has been demonstrated, which made it possible to form quantum keys between three pairs of subscribers.