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Generation, Characterization and Use of Highly Entangled Quantum Frequency Combs

By Claude Fabre, Université Pierre et Marie Curie

We have determined by pulse shaping techniques and frequency multiplexed homodyne detection the full quantum state of a highly multimode, parametrically generated, frequency comb. This has allowed us to characterize its quantum properties in terms of various types of multipartite entanglement. We will also discuss the possible applications of such a highly entangled state to measurement-based quantum computing.