Frequency upconversion of infrared signals via molecular cavity optomechanical systems with gain

Abstract:Molecular cavity optomechanical systems have recently emerged as a promising platform for enhancing infrared detection sensitivity, owing to their ability to up-convert low-frequency infrared (IR) photons to visible frequency range. Generally, under red-detuned pumping in such systems, the ideal conversion efficiency of the IR signal approaches 1. To overcome this efficiency constraint, we propose a scheme that incorporates gain into the infrared cavity of a molecular cavity optomechanical system comprising two cavities and an ensemble of N molecules. The upconversion process, which relies on IR absorption and Raman scattering associated with specific vibrational modes, is significantly amplified by the incorporation of gain under the red-detuned conditions. Moreover, our analysis demonstrates that the added noise is maintained near 0.5.

arXiv:2606.17877 [quant-ph]

(or arXiv:2606.17877v1 [quant-ph] for this version)

https://doi.org/10.48550/arXiv.2606.17877 Focus to learn more arXiv-issued DOI via DataCite (pending registration)

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