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arXiv · 2307.03809

Terahertz-Mediated Microwave-to-Optical Transduction

Furkan Sahbaz·James N. Eckstein·Dale J. Van Harlingen·Simeon I. Bogdanov
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Abstract

Transduction of quantum signals between the microwave and the optical ranges will unlock powerful hybrid quantum systems enabling information processing with superconducting qubits and low-noise quantum networking through optical photons. Most microwave-to-optical quantum transducers suffer from thermal noise due to pump absorption. We analyze the coupled thermal and wave dynamics in electro-optic transducers that use a two-step scheme based on an intermediate frequency state in the THz range. Our analysis, supported by numerical simulations, shows that the two-step scheme operating with a continuous pump offers near-unity external efficiency with a multi-order noise suppression compared to direct transduction. As a result, two-step electro-optic transducers may enable quantum noise-limited interfacing of superconducting quantum processors with optical channels at MHz-scale bitrates.

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Furkan Sahbaz, James N. Eckstein, Dale J. Van Harlingen, Simeon I. Bogdanov. 2023-07-07. Terahertz-Mediated Microwave-to-Optical Transduction. https://arxiv.org/abs/2307.03809

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