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arXiv · 2607.06888

Correlation Localization in Waveguide QED with Delayed Interactions

N. Vera·F. M. Quinteros·P. Barberis-Blostein·P. Solano
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Abstract

We study the atom-atom correlation length in an atomic array coupled to a waveguide under the Bragg condition with delayed non-Markovian interactions caused by a finite photon propagation time. Starting from a single excited atom, the excitation partially spreads among all atoms, reaching a steady state. The remaining excitation localizes near the initially excited atom, and the atom-atom correlation length decreases as a power law with the interaction delay. This localization phenomenon reveals how the delay-induced non-Markovian behavior affects the correlation transport in waveguide QED systems.

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N. Vera, F. M. Quinteros, P. Barberis-Blostein, P. Solano. 2026-07-08. Correlation Localization in Waveguide QED with Delayed Interactions. https://arxiv.org/abs/2607.06888

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