Fig. 1

Schematic diagram of multi-chip interconnection for energy-time entanglement distribution. The silicon-on-insulator chip is the sender and generates correlated wideband photon pairs via the spontaneous four-wave mixing process. The photons are divided and sent to two receivers of the quantum network. At the receiver terminal, photons are subdivided into different wavelength channels by the AWG. Entanglement preparation and analysis are carried out by the on-chip UMZIs. The energy-time entangled photons are detected by single photon detectors. AWG: arrayed waveguide grating; UMZI: unbalanced Mach-Zander interferometer