Stationary excitation waves and multimerization in arrays of quantum emitters

Lonigro D, Facchi P, Pascazio S, Pepe FV, Pomarico D (2021)

Publication Type: Journal article

Publication year: 2021

Journal

New Journal of Physics Institute of Physics: Open Access Journals / Institute of Physics (IoP) and Deutsche Physikalische Gesellschaft

Book Volume: 23

Article Number: 103033

Journal Issue: 10

DOI: 10.1088/1367-2630/ac2ce0

Abstract

We explore the features of an equally-spaced array of two-level quantum emitters, that can be either natural atoms (or molecules) or artificial atoms, coupled to a field with a single continuous degree of freedom (such as an electromagnetic mode propagating in a waveguide). We investigate the existence and characteristics of bound states, in which a single excitation is shared among the emitters and the field. We focus on bound states in the continuum, occurring in correspondence of excitation energies in which a single excited emitter would decay. We characterize such bound states for an arbitrary number of emitters, and obtain two main results, both ascribable to the presence of evanescent fields. First, the excitation profile of the emitter states is a sinusoidal wave. Second, we discuss the emergence of multimers, consisting in subsets of emitters separated by two lattice spacings in which the electromagnetic field is approximately vanishing.

Authors with CRIS profile

Davide Lonigro

Involved external institutions

University of Bari Aldo Moro / Università degli Studi di Bari Aldo Moro IT Italy (IT) Istituto Tumori Bari Giovanni Paolo II IT Italy (IT)

How to cite

APA:

Lonigro, D., Facchi, P., Pascazio, S., Pepe, F.V., & Pomarico, D. (2021). Stationary excitation waves and multimerization in arrays of quantum emitters. New Journal of Physics, 23(10). https://doi.org/10.1088/1367-2630/ac2ce0

MLA:

Lonigro, Davide, et al. "Stationary excitation waves and multimerization in arrays of quantum emitters." New Journal of Physics 23.10 (2021).

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