5 papers
Fast two-qubit logic with holes in germanium
N. W. Hendrickx, D. P. Franke, A. Sammak +2
The promise of quantum computation with quantum dots has stimulated widespread research. Still, a platform that can combine excellent control with fast and high-fidelity operation…
Ballistic supercurrent discretization and micrometer-long Josephson coupling in germanium
N. W. Hendrickx, M. L. V. Tagliaferri, M. Kouwenhoven +6
We fabricate Josephson field-effect-transistors in germanium quantum wells contacted by superconducting aluminum and demonstrate supercurrents carried by holes that extend over jun…
Rent's rule and extensibility in quantum computing
David P. Franke, James S. Clarke, Lieven M. K. Vandersypen +1
Quantum computing is on the verge of a transition from fundamental research to practical applications. Yet, to make the step to large-scale quantum computation, an extensible qubit…
Spin lifetime and charge noise in hot silicon quantum dot qubits
L. Petit, J. M. Boter, H. G. J. Eenink +10
We investigate the magnetic field and temperature dependence of the single-electron spin lifetime in silicon quantum dots and find a lifetime of 2.8 ms at a temperature of 1.1 K. W…
Quadrupolar Effects on Nuclear Spins of Neutral Arsenic Donors in Silicon
David P. Franke, Moritz P. D. Pflüger, Pierre-André Mortemousque +2
We present electrically detected electron nuclear double resonance measurements of the nuclear spins of ionized and neutral arsenic donors in strained silicon. In addition to a red…