Signatures of inter-sideband coherence in the resonance fluorescence spectrum of an acoustically-modulated quantum dot

Abstract:We theoretically investigate the inter-sideband phase coherence within the resonance fluorescence spectrum of an acoustically modulated quantum dot using a filtered-field formalism for a Mach-Zehnder configuration. We demonstrate that geometric slant of the interferograms provides an indicator of phase coherence that is resilient to environmental white noise. Specifically, noise-induced spectral diffusion reduces the global fringe intensity, while leaving the characteristic inclination strictly invariant. Our findings establish a framework for verifying single-photon coherence between spectral sidebands, essential for frequency-bin encoding and scalable quantum networking in realistic, noisy solid-state architectures.

Mesoscale and Nanoscale Physics (cond-mat.mes-hall); Quantum Physics (quant-ph)

arXiv:2608.30886 [cond-mat.mes-hall]

(or arXiv:2608.30886v1 [cond-mat.mes-hall] for this version)

https://doi.org/10.48550/arXiv.2608.30886 Focus to learn more arXiv-issued DOI via DataCite (pending registration)

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