A reconfigurable ground-to-satellite quantum network
Satellite-based quantum communication channels are important for ultra-long distances. However, their limited availability and substantial attenuation present challenges in efficiently connecting multiple users within a city-wide network during the satellite pass.
To circumvent these limitations, we propose a reconfigurable quan-tum network with dual-functionality. While the satellite is in range, the network is configured in a multipoint-to-point topology where all ground nodes establish entanglement with the satellite receiver using time multiplexingto optimize long-distance transmission.
During times when this satellite is not available, the satellite up-link isrerouted via a single optical switch to the ground nodes to form a pair-wise ground network leveraging wave-length multiplexing to share resources with the preexisting telecommunication infrastructure. The scalability,simple reconfigurability, and easy integration with fibre networks make this architecture a promising candidatefor global quantum communication.
Location
QNC 1201