Broadband Spatio-Spectral Mode Conversion via Four-Wave Mixing

Abstract:We introduce a framework for scalable and broadband free-space phase-matched four-wave mixing in ring resonators. This method for four-wave mixing reduces the complexity of coupling an emitter to a quantum network by combining the spatial and spectral interfaces between them into one nonlinear optical process. The device is compliant with current heterogeneous integration capabilities and has a bandwidth of 165 nm for efficient spatio-spectral conversion. We outline a fabrication-ready diamond-on-insulator pathway towards modular unit cells that natively bridge visible color centers to the infrared spectrum for scalable quantum networks. We also present and analyze an end-to-end framework for considering single-photon coupling efficiency from a color center to a quantum network. This framework represents a step forwards in analyzing and reducing system-scale losses in a spin-photon interface.

Quantum Physics (quant-ph); Applied Physics (physics.app-ph); Optics (physics.optics)

arXiv:2512.10045 [quant-ph]

(or arXiv:2512.10045v2 [quant-ph] for this version)

https://doi.org/10.48550/arXiv.2512.10045 Focus to learn more arXiv-issued DOI via DataCite

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