3 papers
cond-mat.mes-hall2024
Sensing Few Electrons Floating on Helium with High-Electron-Mobility Transistors
Mayer M. Feldman, Gordian Fuchs, Tiffany Liu +4
We report on low-frequency measurements of few electrons floating on superfluid helium using a bespoke cryogenic cascode amplifier circuit built with off-the-shelf GaAs High-Electr…
cond-mat.mes-hall2024
Towards Utilizing Scanning Gate Microscopy as a High-Resolution Probe of Valley Splitting in Si/SiGe Heterostructures
Efe Cakar, H. Ekmel Ercan, Gordian Fuchs +4
A detailed understanding of the material properties that affect the splitting between the two low-lying valley states in Si/SiGe heterostructures will be increasingly important as…
cond-mat.mes-hall2023
Dispersive readout of a silicon quantum device using an atomic force microscope-based rf gate sensor
Artem O. Denisov, Gordian Fuchs, Seong W. Oh +1
We demonstrate dispersive charge sensing of Si/SiGe single and double quantum dots (DQD) by coupling sub-micron floating gates to a radio frequency reflectometry (rf-reflectometry)…