Charge fluctuations in superconducting single electron transistors (A02)

• Subject Area: Experimental Condensed Matter Physics ; Theoretical Condensed Matter Physics
• Term: from 2021 to 2024
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 425217212

In this project, we will study the interplay between quantum charge fluctuations and electromagnetic fields. The goal is to elucidate both theoretically and experimentally the role of charge fluctuations in the electronic transport through metallic and superconducting single-electron transistors far away from equilibrium. Experimentally, the nonequilibrium will be induced by microwave irradiation and probed by DC transport measurements at very low temperatures. The theoretical study is performed using a Keldysh real-time Green’s function approach.

• DFG Programme: Collaborative Research Centres
• Subproject of: SFB 1432: Fluctuations and Nonlinearities in Classical and Quantum Matter beyond Equilibrium
• Major Instrumentation: Network analyzer
• Instrumentation Group: 6380 Frequenzanalysatoren, Schwingungsanalysatoren
• Applicant Institution: Universität Konstanz
• Project Heads: Professor Dr. Wolfgang Belzig; Professorin Dr. Elke Scheer