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

Spin Qubit is a semiconducting qubit approach for quantum computing hardware. Source: latex text.

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.

Key Findings

Links

• arXiv: 2608.30886

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