Acousto-optical Floquet engineering of a single-photon emitter

Daniel Groll, Daniel Wigger, Matthias Weiß, Mingyun Yuan, Alexander Kuznetsov, Alberto Hernández-Mínguez, Hubert J. Krenner, Tilmann Kuhn, Paweł Machnikowski

公開日: 2025/9/11

Abstract

The combination of solid state single-photon emitters and mechanical excitations into hybrid infrastructures is a promising approach for new developments in quantum technology. Here we investigate theoretically the resonance fluorescence (RF) spectrum of an acoustically modulated single-photon emitter under arbitrarily strong optical driving. In the spectrum, the combination of Mollow triplet physics and phonon sidebands results in a complex structure of crossings, anti-crossings, and line suppressions. We apply Floquet theory to develop an analytical expression for the RF spectrum. Complemented with perturbative and non-perturbative techniques, this allows us to fully understand the underlying acousto-optical double dressing physics of the hybrid quantum system, explaining the observed spectral features. We use these insights to perform an experimental feasibility study of existing emitter-based acousto-optical platforms and come to the conclusion that bulk acoustic waves interfaced with quantum dots render a promising infrastructure to perform acousto-optical Floquet engineering.

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