282 citations · 566 across the 10 of their papers we have counts for
10 papers
Sweet-spot operation of a germanium hole spin qubit with highly anisotropic noise sensitivity
N. W. Hendrickx, L. Massai, M. Mergenthaler +5
Spin qubits defined by valence band hole states comprise an attractive candidate for quantum information processing due to their inherent coupling to electric fields enabling fast…
Radio-frequency characterization of a supercurrent transistor made from a carbon nanotube
M. Mergenthaler, F. J. Schupp, A. Nersisyan +6
A supercurrent transistor is a superconductor-semiconductor hybrid device in which the Josephson supercurrent is switched on and off using a gate voltage. While such devices have b…
A coherent nanomechanical oscillator driven by single-electron tunnelling
Yutian Wen, N. Ares, F. J. Schupp +3
A single-electron transistor incorporated as part of a nanomechanical resonator represents an extreme limit of electron-phonon coupling. While it allows for fast and sensitive elec…
Radio-frequency reflectometry of a quantum dot using an ultra-low-noise SQUID amplifier
F. J. Schupp, F. Vigneau, Y. Wen +12
Fault-tolerant spin-based quantum computers will require fast and accurate qubit readout. This can be achieved using radio-frequency reflectometry given sufficient sensitivity to t…
Shuttling a single charge across a one-dimensional array of silicon quantum dots
A. R. Mills, D. M. Zajac, M. J. Gullans +3
Significant advances have been made towards fault-tolerant operation of silicon spin qubits, with single qubit fidelities exceeding 99.9%, several demonstrations of two-qubit gates…
Carbon Nanotube Millikelvin Transport and Nanomechanics
K. J. G. Götz, F. J. Schupp, A. K. Hüttel
Single wall carbon nanotubes cooled to cryogenic temperatures are outstanding electronic as well as nano-electromechanical model systems. To probe a largely unperturbed system, we…
Quantum Interference in Silicon 1D Quasi-Ballistic Junctionless Nanowire Field Effect Transistors
Felix J. Schupp, Muhammad M. Mirza, Donald A. MacLaren +3
We investigate the low temperature transport in 8 nm diameter Si junctionless nanowire field effect transistors fabricated by top down techniques with a wrap-around gate and two di…
Nanomechanical characterization of the Kondo charge dynamics in a carbon nanotube
K. J. G. Götz, D. R. Schmid, F. J. Schupp +3
Using the transversal vibration resonance of a suspended carbon nanotube as charge detector for its embedded quantum dot, we investigate the case of strong Kondo correlations betwe…
Secondary electron interference from trigonal warping in clean carbon nanotubes
A. Dirnaichner, M. del Valle, K. J. G. Götz +5
We investigate Fabry-Perot interference in an ultraclean carbon nanotube resonator. The conductance shows a clear superstructure superimposed onto conventional Fabry-Perot oscillat…
Sensitive radio-frequency measurements of a quantum dot by tuning to perfect impedance matching
N. Ares, F. J. Schupp, A. Mavalankar +9
Electrical readout of spin qubits requires fast and sensitive measurements, but these are hindered by poor impedance matching to the device. We demonstrate perfect impedance matchi…