76 citations · 232 across the 9 of their papers we have counts for
6 papers · 1 filter
Automatic tuning of a donor in a silicon quantum device using machine learning
Brandon Severin, Tim Botzem, Federico Fedele +12
Donor spin qubits in silicon offer one- and two-qubit gates with fidelities beyond 99%, coherence times exceeding 30 seconds, and compatibility with industrial manufacturing method…
Coupling a Ge nuclear spin to an electrostatically defined quantum dot
Paul Steinacker, Gauri Goenka, Rocky Yue Su +17
Single nuclear spins in silicon are a promising resource for quantum technologies due to their long coherence times and excellent control fidelities. Qubits and qudits have been en…
Closed-loop control of a GaAs-based singlet-triplet spin qubit with 99.5% gate fidelity and low leakage
Pascal Cerfontaine, Tim Botzem, Julian Ritzmann +6
Semiconductor spin qubits have recently seen major advances in coherence time and control fidelities, leading to a single-qubit performance that is on par with other leading qubit…
Tuning methods for semiconductor spin--qubits
Tim Botzem, Michael D. Shulman, Sandra Foletti +13
We present efficient methods to reliably characterize and tune gate-defined semiconductor spin qubits. Our methods are designed to target the tuning procedures of semiconductor dou…
Feedback-tuned noise-resilient gates for encoded spin qubits
Pascal Cerfontaine, Tim Botzem, Simon Sebastian Humpohl +3
Two level quantum mechanical systems like spin 1/2 particles lend themselves as a natural qubit implementation. However, encoding a single qubit in several spins reduces the resour…
Quadrupolar and anisotropy effects on dephasing in two-electron spin qubits in GaAs
Tim Botzem, Robert P. G. McNeil, Dieter Schuh +2
Understanding the decoherence of electron spins in semiconductors due to their interaction with nuclear spins is of fundamental interest as they realize the central spin model and…