The germanium quantum information route

G Scappucci, C Kloeffel, FA Zwanenburg… - Nature Reviews …, 2021 - nature.com
In the effort to develop disruptive quantum technologies, germanium is emerging as a
versatile material to realize devices capable of encoding, processing and transmitting …

Review of performance metrics of spin qubits in gated semiconducting nanostructures

P Stano, D Loss - Nature Reviews Physics, 2022 - nature.com
Abstract This Technical Review collects values of selected performance characteristics of
semiconductor spin qubits defined in electrically controlled nanostructures. The …

Fast two-qubit logic with holes in germanium

NW Hendrickx, DP Franke, A Sammak, G Scappucci… - Nature, 2020 - nature.com
Universal quantum information processing requires the execution of single-qubit and two-
qubit logic. Across all qubit realizations, spin qubits in quantum dots have great promise to …

A single-hole spin qubit

NW Hendrickx, WIL Lawrie, L Petit, A Sammak… - Nature …, 2020 - nature.com
Qubits based on quantum dots have excellent prospects for scalable quantum technology
due to their compatibility with standard semiconductor manufacturing. While early research …

Shallow and undoped germanium quantum wells: a playground for spin and hybrid quantum technology

A Sammak, D Sabbagh, NW Hendrickx… - Advanced Functional …, 2019 - Wiley Online Library
Buried‐channel semiconductor heterostructures are an archetype material platform for the
fabrication of gated semiconductor quantum devices. Sharp confinement potential is …

Theory of hole-spin qubits in strained germanium quantum dots

LA Terrazos, E Marcellina, Z Wang, SN Coppersmith… - Physical Review B, 2021 - APS
We theoretically investigate the properties of holes in a Si x Ge 1− x/Ge/Si x Ge 1− x
quantum well in a perpendicular magnetic field that make them advantageous as qubits …

Light effective hole mass in undoped Ge/SiGe quantum wells

M Lodari, A Tosato, D Sabbagh, MA Schubert… - Physical Review B, 2019 - APS
We report density-dependent effective hole mass measurements in undoped germanium
quantum wells. We are able to span a large range of densities (2.0− 11× 10 11 cm− 2) in top …

Optimal operation points for ultrafast, highly coherent Ge hole spin-orbit qubits

Z Wang, E Marcellina, AR Hamilton, JH Cullen… - npj Quantum …, 2021 - nature.com
Strong spin-orbit interactions make hole quantum dots central to the quest for electrical spin
qubit manipulation enabling fast, low-power, scalable quantum computation. Yet it is …

Electrical operation of hole spin qubits in planar MOS silicon quantum dots

Z Wang, A Sarkar, SD Liles, A Saraiva, AS Dzurak… - Physical Review B, 2024 - APS
Silicon hole quantum dots have been the subject of considerable attention thanks to their
strong spin-orbit coupling enabling electrical control, a feature that has been demonstrated …

High quality Ge layers for Ge/SiGe quantum well heterostructures using chemical vapor deposition

A Nigro, E Jutzi, N Forrer, A Hofmann, G Gadea… - Physical Review …, 2024 - APS
A great deal of interest is directed nowadays toward the development of innovative
technologies in the field of quantum information and quantum computing, with emphasis on …