16 papers
A Voltage-Controlled Josephson Frequency Comb
Giorgio De Simoni, Francesco Giazotto
Microwave frequency combs constitute promising resources for quantum technologies, cryogenic electronics, and multiplexed sensing architectures. In this work, we propose a frequenc…
Superconducting properties of lifted-off Niobium nanowires
A. Kotsovolou, F. Soofivand, P. Singha +7
Hybrid superconductor/semiconductor devices play a crucial role in advancing quantum science and technology by merging the properties of superconductors and semiconductors. To oper…
A Zero-Bias Superconducting Voltage Amplifier Based on the Bipolar Thermoelectric Effect
Giacomo Trupiano, Giorgio De Simoni, Francesco Giazotto
We introduce a zero-bias superconducting voltage amplifier that harvests energy from a thermal gradient by exploiting negative differential resistance (NDR) in an asymmetric tunnel…
Extremely weak electron-phonon coupling in Josephson junctions built on InAs on Insulator
Giorgio De Simoni, Sebastiano Battisti, Alessandro Paghi +2
InAs-on-Insulator (InAsOI) enables an effective superconducting proximity effect and extremely weak electron-phonon (e-ph) coupling, allowing precise electronic-temperature control…
Highly-linear flux-to-voltage transducer based on superconducting quantum interference proximity transistors
Angelo Greco, Giorgio De Simoni, Francesco Giazotto
Superconducting quantum interference devices (SQUIDs) are state-of-the-art in ultra-sensitive magnetometry; however, conventional SQUID devices are fundamentally limited by the inh…
Quantum Bipolar Thermoelectricity
Filippo Antola, Giorgio De Simoni, Francesco Giazotto +1
Thermoelectricity is generally understood as a classical effect emerging from energy-dependent transport asymmetries. Here we uncover a purely quantum mechanism, where a supercondu…