Dressed states forming when quantum emitters or atoms couple to a photonic bath underpin a number of phenomena and applications, in particular nonradiating effective interactions occurring within photonic bandgaps. Here, we present a compact formulation of the resolvent-based theory for calculating atom-photon dressed states built on the idea that the atom behaves as an effective impurity. This establishes an explicit connection with the standard impurity problem in condensed matter. Moreover, it allows us to formulate and settle - independently of the bath Hamiltonian - a number of properties previously known only for specific models or not entirely formalized. The framework is next extended to the case of more than one emitter, which is used to derive a general expression of dissipationless effective Hamiltonians explicitly featuring the overlap of single-emitter dressed bound states.
Leonforte L., Valenti D., Spagnolo B., Carollo A., & Ciccarello F. (2021). Dressed emitters as impurities. NANOPHOTONICS, 10(17), 4251-4259 [10.1515/nanoph-2021-0490].
Data di pubblicazione: | 2021-11 | |
Titolo: | Dressed emitters as impurities | |
Autori: | ||
Citazione: | Leonforte L., Valenti D., Spagnolo B., Carollo A., & Ciccarello F. (2021). Dressed emitters as impurities. NANOPHOTONICS, 10(17), 4251-4259 [10.1515/nanoph-2021-0490]. | |
Rivista: | ||
Digital Object Identifier (DOI): | http://dx.doi.org/10.1515/nanoph-2021-0490 | |
Abstract: | Dressed states forming when quantum emitters or atoms couple to a photonic bath underpin a number of phenomena and applications, in particular nonradiating effective interactions occurring within photonic bandgaps. Here, we present a compact formulation of the resolvent-based theory for calculating atom-photon dressed states built on the idea that the atom behaves as an effective impurity. This establishes an explicit connection with the standard impurity problem in condensed matter. Moreover, it allows us to formulate and settle - independently of the bath Hamiltonian - a number of properties previously known only for specific models or not entirely formalized. The framework is next extended to the case of more than one emitter, which is used to derive a general expression of dissipationless effective Hamiltonians explicitly featuring the overlap of single-emitter dressed bound states. | |
Appare nelle tipologie: | 1.01 Articolo in rivista |
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