Reliable multiphoton generation in waveguide QED

Abstract

In spite of decades of effort, it has not yet been possible to create single-mode multiphoton states of light with high success probability and near unity fidelity. Complex quantum states of propagating optical photons would be an enabling resource for diverse protocols in quantum information science, including for interconnecting quantum nodes in quantum networks. Here, we propose several methods to generate heralded mutipartite entangled atomic and photonic states by using the strong and long-range dissipative couplings between atoms emerging in waveguide QED setups. Our theoretical analysis demonstrates high success probabilities and fidelities are possible exploiting waveguide QED properties.

Correction of small typos and reduction of supplementary material

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