Microwave-optical quantum transduction based on three-dimensional microwave cavities*

Microwave-optical quantum transducers that convert quantum information between microwave and optical frequencies with high fidelity play a crucial role in long-distance quantum networks and quantum sensors and detectors R&D. However, high-efficiency and low-noise quantum transduction in the quantum level remains challenging in the current designs and demonstrations. Here, we have developed a solution of microwave-optical transduction using Fermilab’s three-dimensional high-quality microwave cavities with record-high 2 second coherence time, which brings significant improvement to the transduction efficiency [1]. We will present conceptual design optimization for efficient frequency conversion, as well as the preliminary results on microwave-optical transduction.

Funding for the project is provided by Fermilab’s Laboratory Directed Research and Development program.

[1] Romanenko, A., Pilipenko, R., Zorzetti, S., Frolov, D., Awida, M., Belomestnykh, S., Posen, S. & Grassellino, A. (2020). Three-Dimensional Superconducting Resonators at T< 20 mK with Photon Lifetimes up to τ= 2 s. Physical Review Applied, 13(3), 034032.