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Published February 19, 2020 | Version 1
Journal article Open

Subradiant bound dimer excited states of emitter chains coupled to a one dimensional waveguide

  • 1. Aarhus University

Description

This article shows that chains of optical or microwave emitters coupled to a one-dimensional (1D) waveguide support subradiant states with close pairs of excited emitters, which have longer lifetimes than even the most subradiant states with only a single excitation. Exact, analytical expressions for nonradiative excitation dimer states are obtained in the limit of infinite chains. To understand the mechanism underlying these states, we present a formal equivalence between subradiant dimers and single localized excitations around a chain defect (unoccupied site). Our analytical mapping permits extension to emitter chains coupled to the 3D free space vacuum field.

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PhysRevResearch.2.013173.pdf

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Funding

SQUARE – Scalable Rare Earth Ion Quantum Computing Nodes 820391
European Commission
NanOQTech – Nanoscale Systems for Optical Quantum Technologies 712721
European Commission