Year: 2024
Type: article
Abstract: We demonstrate a microwave power-to-electrical energy conversion in a resonator-coupled double quantum dot. The system, operated as a photodiode, converts individual microwave photons to electrons tunneling through the double dot, resulting in an electrical current flowing against the applied voltage bias at input powers down to 1 fW. The device attains a maximum power harvesting efficiency of 2%, with the photon-to-electron conversion efficiency reaching 12% in the single-photon absorption regime. We find that the power conversion depends on thermal effects showing that thermodynamics plays a crucial role in the single-photon energy conversion. Published by the American Physical Society 2024
Institutions: Lund University, NanoLund, University of Basel
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Funders: National Science Foundation, Silicon Valley Community Foundation, Foundational Questions Institute, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, Chalmers Tekniska Högskola, Knut och Alice Wallenbergs Stiftelse, Vetenskapsrådet, Wallenberg Center for Quantum Technology, Chalmers University of Technology
OpenAlex ID: W4391844337