Superradiance and anomalous hyperfine splitting in inhomogeneous ensembles

Andrejic P, Pálffy A (2021)

Publication Type: Journal article

Publication year: 2021

Journal

Physical Review A American Physical Society

Book Volume: 104

Journal Issue: 3

DOI: 10.1103/PhysRevA.104.033702

Abstract

Collective effects in the interaction of light with ensembles of identical scatterers play an important role in many fields of physics. However, often the term "identical" is not accurate due to the presence of hyperfine fields which induce inhomogeneous transition shifts and splittings. Here we develop a formalism based on the Green's-function method to model the linear response of such inhomogeneous ensembles in one-dimensional waveguides. We obtain a compact formula for the collective spectrum, which exhibits deviations from the uniform frequency shift and broadening expected of two-level systems. In particular, if the coherent contribution to the collective coupling is large, the effect of inhomogeneous broadening can be suppressed, with the linewidth approaching that of the superradiant value. We apply this formalism to describe collective effects in x-ray scattering off thin-film waveguides for inhomogeneous hyperfine parameters.

Authors with CRIS profile

Adriana Palffy-Buß Lehrstuhl für Theoretische Physik

Additional Organisation(s)

Sonderforschungsbereich/Transregio 306/1: Quantenkooperativität von Licht und Materie - QuCoLiMa

Related research project(s)

X-ray photonic structures for control of cooperative emission from resonant nuclei (C04) TRR 306: Quantenkooperativität von Licht und Materie – QuCoLiMa Jan. 1, 2021 - Dec. 31, 2024

Involved external institutions

Max-Planck-Institut für Kernphysik (MPIK) / Max Planck Institute for Nuclear Physics DE Germany (DE)

How to cite

APA:

Andrejic, P., & Pálffy, A. (2021). Superradiance and anomalous hyperfine splitting in inhomogeneous ensembles. Physical Review A, 104(3). https://dx.doi.org/10.1103/PhysRevA.104.033702

MLA:

Andrejic, Petar, and Adriana Pálffy. "Superradiance and anomalous hyperfine splitting in inhomogeneous ensembles." Physical Review A 104.3 (2021).

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