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Multimode entanglement is quintessential for the design and fabrication ofquantum networks, which play a central role in quantum information processingand quantum metrology. However, an experimental setup is generally constructedwith a specific network configuration in mind and therefore exhibits reducedversatility and scalability. The present work demonstrates an on-demand,reconfigurable quantum network simulator, using an intrinsically multimodequantum resource and a homodyne detection apparatus. Without altering eitherthe initial squeezing source or experimen- tal architecture, we realize theconstruction of thirteen cluster states of various size and connectivity aswell as the implementation of a secret sharing protocol. In particular, thissimulator enables the interrogation of quantum correlations and fluctuationsfor a Gaussian quantum network. This initi- ates a new avenue for implementingon-demand quantum information processing by only adapting the measurementprocess and not the experimental layout.

Reconfigurable Optical Quantum Networks Using Multimode Quantum Frequency Combs and Pulse Shaping