Publications (6)
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…
Transition-state-theory-based interpretation of Landau double well potential for ferroelectrics
Md Nur K. Alam, S. Clima, B. Kaczer +6
Existence of quasi-static negative capacitance (QSNC) was proposed from an interpretation of the widely accepted Landau model of ferroelectrics. However, many works showed not to s…
Uniform Spin Qubit Devices in an All-Silicon 300 mm Integrated Process
N. I. Dumoulin Stuyck, R. Li, C. Godfrin +12
Larger arrays of electron spin qubits require radical improvements in fabrication and device uniformity. Here we demonstrate excellent qubit device uniformity and tunability from 3…
Low dephasing and robust micromagnet designs for silicon spin qubits
N. I. Dumoulin Stuyck, F. A. Mohiyaddin, R. Li +3
Using micromagnets to enable electron spin manipulation in silicon qubits has emerged as a very popular method, enabling single-qubit gate fidelities larger than 99:9%. However, th…
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…
Auroral, Ionospheric and Ground Magnetic Signatures of Magnetopause Surface Modes
M. O. Archer, M. D. Hartinger, L. Rastaetter +6
Surface waves on Earth's magnetopause have a controlling effect upon global magnetospheric dynamics. Since spacecraft provide sparse in situ observation points, remote sensing thes…