In the effort to develop disruptive quantum technologies, germanium is emerging as a
versatile material to realize devices capable of encoding, processing and transmitting …

Abstract This Technical Review collects values of selected performance characteristics of
semiconductor spin qubits defined in electrically controlled nanostructures. The …

Spin qubits are considered to be among the most promising candidates for building a
quantum processor. Group IV hole spin qubits are particularly interesting owing to their ease …

Holes confined in quantum dots have gained considerable interest in the past few years due
to their potential as spin qubits. Here we demonstrate two-axis control of a spin 3/2 qubit in …

Nanowires are natural one-dimensional channels and offer new opportunities for advanced
electronic quantum transport experiments. We review recent progress on the synthesis of …

Operation speed and coherence time are two core measures for the viability of a qubit.
Strong spin-orbit interaction (SOI) and relatively weak hyperfine interaction make holes in …

Hole spin qubits are frontrunner platforms for scalable quantum computers, but state-of-the-
art devices suffer from noise originating from the hyperfine interactions with nuclear defects …

We study theoretically the low-energy hole states in Si, Ge, and Ge/Si core/shell nanowires
(NWs). The NW core in our model has a rectangular cross section, the results for a square …

Hole spin qubits in group-IV semiconductors, especially Ge and Si, are actively investigated
as platforms for ultrafast electrical spin manipulation thanks to their strong spin-orbit …

In recent years, hole-spin qubits based on semiconductor quantum dots have advanced at a
rapid pace. We first review the main potential advantages of these hole-spin qubits with …