Resumen: The one- and two-photon scattering matrix S is obtained analytically for a one-dimensional waveguide and a pointlike scatterer with N excited levels (generalized V-type atom). We argue that the two-photon scattering matrix contains sufficient information to distinguish between different level structures which are equivalent for single-photon scattering, such as a V atom with N=2 excited levels and two two-level systems. In particular, we show that the scattering with the V-type atom exhibits a destructive interference effect leading to two-photon coupled-resonator-induced transparency, where the nonlinear part of the two-photon scattering matrix vanishes when each incident photon fulfills a single-photon condition for transparency. Idioma: Inglés DOI: 10.1103/PhysRevA.94.053857 Año: 2016 Publicado en: PHYSICAL REVIEW A 94, 5 (2016), 053857 [9 pp] ISSN: 1050-2947 Financiación: info:eu-repo/grantAgreement/ES/DGA/FENOL-GROUP Financiación: info:eu-repo/grantAgreement/EU/PROMISCE Financiación: info:eu-repo/grantAgreement/ES/MINECO/FIS2012-33022 Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2014-53432-C5 Tipo y forma: Article (Published version) Área (Departamento): Física de la Materia Condensada (Departamento de Física de la Materia Condensada)
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