Journal
PHYSICAL REVIEW LETTERS
Volume 120, Issue 15, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.120.153602
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Funding
- MINECO/FEDER [FIS2015-70856-P]
- CAM PRICYT [QUITEMAD+ S2013/ICE-2801]
- European Union Integrated project Simulators and Interfaces with Quantum Systems (SIQS)
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We study the scattering of individual photons by a two-level system ultrastrongly coupled to a waveguide. The scattering is elastic for a broad range of couplings and can be described with an effective U(1)-symmetric Hamiltonian. This simple model allows the prediction of scattering resonance line shapes, validated up to alpha = 0.3, and close to the Toulouse point alpha = 1/2, where inelastic scattering becomes relevant. Our predictions model experiments with superconducting circuits [P. Forn-Diaz et al.,Nat.Phys.13, 39 (2017)] and can be extended to study multiphoton scattering.
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