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Título: | Dynamical signatures of bound states in waveguide QED |
Autor: | Sánchez-Burillo, Eduardo; Zueco, David CSIC ORCID; Martín-Moreno, Luis CSIC ORCID ; García-Ripoll, Juan José CSIC ORCID | Fecha de publicación: | 14-ago-2017 | Editor: | American Physical Society | Citación: | Physical Review A 96: 023831 (2017) | Resumen: | We study the spontaneous decay of an impurity coupled to a linear array of bosonic cavities forming a single-band photonic waveguide. The average frequency of the emitted photon is different from the frequency for single-photon resonant scattering, which perfectly matches the bare frequency of the excited state of the impurity. We study how the energy of the excited state of the impurity influences the spatial profile of the emitted photon. The farther the energy is from the middle of the photonic band, the farther the wave packet is from the causal limit. In particular, if the energy lies in the middle of the band, the wave packet is localized around the causal limit. Besides, the occupation of the excited state of the impurity presents a rich dynamics: it shows an exponential decay up to intermediate times, this is followed by a power-law tail in the long-time regime, and it finally reaches an oscillatory stationary regime. Finally, we show that this phenomenology is robust under the presence of losses, both in the impurity and in the cavities. | Versión del editor: | https://doi.org/10.1103/PhysRevA.96.023831 | URI: | http://hdl.handle.net/10261/158973 | DOI: | 10.1103/PhysRevA.96.023831 | Identificadores: | doi: 10.1103/PhysRevA.96.023831 issn: 2469-9934 |
Aparece en las colecciones: | (ICMA) Artículos (CFMAC-IFF) Artículos |
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waweQED.pdf | 1,72 MB | Adobe PDF | Visualizar/Abrir |
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