Publications (11)
Radio frequency single electron transmission spectroscopy of a semiconductor Si/SiGe quantum dot
I. Fattal, J. Van Damme, B. Raes +14
Rapid single shot spin readout is a key ingredient for fault tolerant quantum computing with spin qubits. An RF-SET (radio-frequency single electron transistor) is predominantly us…
Local mapping of dissipative vortex motion
B. Raes, J. Van de Vondel, A. V. Silhanek +4
We explore, with unprecedented single vortex resolution, the dissipation and motion of vortices in a superconducting ribbon under the influence of an external alternating magnetic…
Symmetry-induced giant vortex state in a superconducting film with a Penrose array of magnetic pinning centers
R. B. G. Kramer, A. V. Silhanek, J. Van de Vondel +2
A direct visualization of the flux distribution in a Pb film covering a five-fold Penrose array of Co dots is obtained by mapping the local field distribution with a scanning Hall…
Holes in silicon are heavier than expected: transport properties of extremely high mobility electrons and holes in silicon MOSFETs
J. P. Wendoloski, J. Hillier, S. D. Liles +17
The quality of the silicon-oxide interface plays a crucial role in fabricating reproducible silicon spin qubits. In this work we characterize interface quality by performing mobili…
Argon milling induced decoherence mechanisms in superconducting quantum circuits
J. Van Damme, Ts. Ivanov, P. Favia +12
The fabrication of superconducting circuits requires multiple deposition, etch and cleaning steps, each possibly introducing material property changes and microscopic defects. In t…
Spin precession in anisotropic media
B. Raes, A. W. Cummings, F. Bonell +4
We generalize the diffusive model for spin injection and detection in nonlocal spin structures to account for spin precession under an applied magnetic field in an anisotropic medi…
Manufacturing high-Q superconducting α-tantalum resonators on silicon wafers
D. P. Lozano, M. Mongillo, X. Piao +19
The performance of state-of-the-art superconducting quantum devices is currently limited by microwave dielectric losses at different surfaces and interfaces. α-tantalum is a super…
Reversing Hydrogen-Related Loss in -Ta Thin Films for Quantum Device Fabrication
D. P. Lozano, M. Mongillo, B. Raes +10
-Tantalum (-Ta) is an emerging material for superconducting qubit fabrication due to the low microwave loss of its stable native oxide. However, hydrogen absorption during…
A trilinear quantum dot architecture for semiconductor spin qubits
R. Li, V. Levajac, C. Godfrin +10
Semiconductor quantum dot spin qubits hold significant potential for scaling to millions of qubits for practical quantum computing applications, as their structure highly resembles…
The impact of kinetic inductance on the critical current oscillations of nanobridge SQUIDs
H. Dausy, L. Nulens, B. Raes +2
In this work, we study the current phase relation () of lithographically fabricated molybdenum germanium (MoGe) nanobridges, which is intimately linked to the nanobridge kine…
A closer look at the low frequency dynamics of vortex matter
B. Raes, C. de Souza Silva, A. V. Silhanek +3
Using scanning susceptibility microscopy, we shed new light on the dynamics of individual superconducting vortices and examine the hypotheses of the phenomenological models traditi…