Multimode entanglement is quintessential for the design and fabrication of quantum networks, which play a central role in quantum information processing and quantum metrology. However, an experimental setup is generally constructed with a specific network configuration in mind and therefore exhibits reduced versatility and scalability. The present work demonstrates an on-demand, reconfigurable quantum network simulator, using an intrinsically multimode quantum resource and a homodyne detection apparatus. Without altering either the initial squeezing source or experimen- tal architecture, we realize the construction of thirteen cluster states of various size and connectivity as well as the implementation of a secret sharing protocol. In particular, this simulator enables the interrogation of quantum correlations and fluctuations for a Gaussian quantum network. This initi- ates a new avenue for implementing on-demand quantum information processing by only adapting the measurement process and not the experimental layout.
@article{arxiv.1605.02303,
title = {Reconfigurable Optical Quantum Networks Using Multimode Quantum Frequency Combs and Pulse Shaping},
author = {Y. Cai and J. Roslund and G. Ferrini and F. Arzani and X. Xu and C. Fabre and N. Treps},
journal= {arXiv preprint arXiv:1605.02303},
year = {2016}
}