Adaptive bandwidth management for entanglement distribution in quantum networks

Flexible-grid wavelength-division multiplexing is a powerful tool in lightwave communications for maximizing spectral efficiency. In the emerging field of quantum networking, need effective resource provisioning particularly acute, given generally lower power levels, higher sensitivity to loss, and inapplicability digital error correction. this Letter, we leverage flex-grid technology demonstrate reconfigurable distribution entanglement four-user tabletop network. By adaptively partitioning bandwidth with single wavelength-selective switch, successfully equalize two-party coincidence rates that initially differ by over two orders magnitude. Our scalable approach introduces loss fixed number users, offering practical path establishment management quality-of-service guarantees large networks.