Publications (10)
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…
Back-hopping in Spin-Transfer-Torque switching of perpendicularly magnetized tunnel junctions
T. Devolder, O. Bultynck, P. Bouquin +7
We analyse the phenomenon of back-hopping in spin-torque induced switching of the magnetization in perpendicularly magnetized tunnel junctions. The analysis is based on single-shot…
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…
Investigation of microwave loss induced by oxide regrowth in high-Q Nb resonators
J. Verjauw, A. PotoÄnik, M. Mongillo +16
The coherence of state-of-the-art superconducting qubit devices is predominantly limited by two-level-system defects, found primarily at amorphous interface layers. Reducing microw…
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…
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…
Path toward manufacturable superconducting qubits with relaxation times exceeding 0.1 ms
J. Verjauw, R. Acharya, J. Van Damme +11
As the superconducting qubit platform matures towards ever-larger scales in the race towards a practical quantum computer, limitations due to qubit inhomogeneity through lack of pr…
Ultra-high Q-factor superconducting tantalum resonators on 300 mm Si wafers
R. Acharya, D. Perez Lozano, Ts. Ivanov +13
Superconducting resonators are central to superconducting quantum information technologies and essential for bosonic qubit architectures, where long-lived storage modes enable hard…
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…