254 citations · 2k across the 42 of their papers we have counts for
42 papers
Two electrons interacting at a mesoscopic beam splitter
Niels Ubbelohde, Lars Freise, Elina Pavlovska +8
The non-linear response of a beam splitter to the coincident arrival of interacting particles enables numerous applications in quantum engineering and metrology yet poses considera…
Controlling the error mechanism in a tunable-barrier non-adiabatic charge pump by dynamic gate compensation
Frank Hohls, Vyacheslavs Kashcheyevs, Friederike Stein +3
Single-electron pumps based on tunable-barrier quantum dots are the most promising candidates for a direct realization of the unit ampere in the recently revised SI: they are simpl…
Non-adiabatic single-electron pump in a dopant-free GaAs/AlGaAs 2DEG
B. Buonacorsi, F. Sfigakis, A. Shetty +7
We have realized quantized charge pumping using non-adiabatic single-electron pumps in dopant-free GaAs two-dimensional electron gases (2DEGs). The dopant-free III-V platform allow…
Quantum dot state initialization by control of tunneling rates
Tobias Wenz, Jevgeny Klochan, Frank Hohls +3
We study the loading of electrons into a quantum dot with dynamically controlled tunnel barriers. We introduce a method to measure tunneling rates for individual discrete states an…
Trapping and counting ballistic non-equilibrium electrons
L. Freise, T. Gerster, D. Reifert +4
We demonstrate the trapping of electrons propagating ballistically at far-above-equilibrium energies in GaAs/AlGaAs heterostructures in high magnetic field. We find low-loss transp…
Homogeneous Large-area Quasi-freestanding Monolayer and Bilayer Graphene on SiC
Davood Momeni Pakdehi, Klaus Pierz, Stefan Wundrack +9
In this study, we first show that the argon flow during epitaxial graphene growth is an important parameter to control the quality of the buffer and the graphene layer. Atomic forc…