Quantum optimal control in quantum technologies. Strategic report on current status, visions and goals for research in Europe

CP Koch, U Boscain, T Calarco, G Dirr… - EPJ Quantum …, 2022 - epjqt.epj.org
Quantum optimal control, a toolbox for devising and implementing the shapes of external
fields that accomplish given tasks in the operation of a quantum device in the best way …

Semiconductor spin qubits

G Burkard, TD Ladd, A Pan, JM Nichol, JR Petta - Reviews of Modern Physics, 2023 - APS
The spin degree of freedom of an electron or a nucleus is one of the most basic properties of
nature and functions as an excellent qubit, as it provides a natural two-level system that is …

Semiconductor qubits in practice

A Chatterjee, P Stevenson, S De Franceschi… - Nature Reviews …, 2021 - nature.com
In the past decade, semiconducting qubits have made great strides in overcoming
decoherence, improving the prospects for scalability and have become one of the leading …

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 …

Universal control of four singlet–triplet qubits

X Zhang, E Morozova, M Rimbach-Russ… - Nature …, 2024 - nature.com
The coherent control of interacting spins in semiconductor quantum dots is of strong interest
for quantum information processing and for studying quantum magnetism from the bottom …

A singlet-triplet hole spin qubit in planar Ge

D Jirovec, A Hofmann, A Ballabio, PM Mutter… - Nature Materials, 2021 - nature.com
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 …

Charge-noise spectroscopy of Si/SiGe quantum dots via dynamically-decoupled exchange oscillations

EJ Connors, J Nelson, LF Edge, JM Nichol - Nature communications, 2022 - nature.com
Electron spins in silicon quantum dots are promising qubits due to their long coherence
times, scalable fabrication, and potential for all-electrical control. However, charge noise in …

The SpinBus architecture for scaling spin qubits with electron shuttling

M Künne, A Willmes, M Oberländer, C Gorjaew… - Nature …, 2024 - nature.com
Quantum processor architectures must enable scaling to large qubit numbers while
providing two-dimensional qubit connectivity and exquisite operation fidelities. For …

Roadmap on quantum nanotechnologies

A Laucht, F Hohls, N Ubbelohde… - …, 2021 - iopscience.iop.org
Quantum phenomena are typically observable at length and time scales smaller than those
of our everyday experience, often involving individual particles or excitations. The past few …

99.92%-Fidelity cnot Gates in Solids by Noise Filtering

T Xie, Z Zhao, S Xu, X Kong, Z Yang, M Wang… - Physical Review Letters, 2023 - APS
Inevitable interactions with the reservoir largely degrade the performance of entangling
gates, which hinders practical quantum computation from coming into existence. Here, we …