Generation of single and two-mode multiphoton states in waveguide QED

Abstract

Single and two-mode multiphoton states are the cornerstone of many quantum technologies, e.g., metrology. In the optical regime these states are generally obtained combining heralded single-photons with linear optics tools and post-selection, leading to inherent low success probabilities. In a recent paper, we design several protocols that harness the long-range atomic interactions induced in waveguide QED to improve fidelities and protocols of single-mode multiphoton emission. Here, we give full details of these protocols, revisit them to simplify some of their requirements and also extend them to generate two-mode multiphoton states, such as Yurke or NOON states.

arXiv comment16 pages, 8 figures

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• Quantum Hall phase emerging in an array of atoms interacting with photons
• Nondestructive photon counting in waveguide QED
• Classification of three-photon states in waveguide quantum electrodynamics
• High-purity single-photon generation based on cavity QED
• A semiclassical analysis of dark state transient dynamics in waveguide circuit QED
• Weakly invasive metrology: quantum advantage and physical implementations
• Transmon in a semi-infinite high-impedance transmission line -- appearance of cavity modes and Rabi oscillations