Bound states in the continuum for an array of quantum emitters
Authors: Facchi P., Lonigro D., Pascazio S., Pepe FV., Pomarico D.
Autors Affiliation: Univ Bari, Dipartimento Fis & MECENAS, I-70126 Bari, Italy; Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy; CNR, INO, I-50125 Florence, Italy
Abstract: We study the bound states in the continuum for a system of n two-level quantum emitters, coupled with a one-dimensional photon field, when a single excitation is shared among the different components of the system. The emitters are equally spaced at fixed positions. We first consider the approximation of distant emitters and exhibit degenerate eigenspaces of bound states corresponding to resonant discrete values of the energy. We then consider the full form of the eigenvalue equation, in which the effects of the finite spacing and the field dispersion relation become relevant, yielding significant nonperturbative effects that can lift some degeneracies. We explicitly solve the cases n = 3 and n = 4 emitters.
Journal/Review: PHYSICAL REVIEW A
Volume: 100 (2) Pages from: 023834-1 to: 023834-15
KeyWords: PHOTON; DYNAMICS; ATOMDOI: 10.1103/PhysRevA.100.023834Citations: 15data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2022-01-16References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here