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Related Experiment Video

Updated: Feb 8, 2026

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

Published on: June 3, 2015

A crossbar network for silicon quantum dot qubits.

Ruoyu Li^1,2, Luca Petit^1,2, David P Franke^1,2

¹QuTech, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, Netherlands.

Science Advances

|July 10, 2018

Summary

This summary is machine-generated.

A new quantum computing architecture uses shared control for scalable qubit grids, enabling high-fidelity operations and long coherence times for practical quantum information processing.

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Area of Science:

Quantum Computing
Solid-State Physics
Quantum Information Science

Background:

Single-electron spin states in quantum dots are essential for quantum computation.
Key requirements include long coherence times, high-fidelity operations, and electron shuttling for flying qubits.

Purpose of the Study:

To present a scalable architecture for large-scale quantum computation using shared control.
To enable qubit coupling beyond nearest neighbors for advanced quantum error correction.

Main Methods:

A three-layer fabrication design for defining qubit and tunnel barrier gates.
Utilizing a double stripline for high-fidelity single-qubit rotations.
Employing self-aligned inhomogeneous magnetic fields for qubit addressability and readout.

Main Results:

Demonstrated high-fidelity single-qubit rotations.
Achieved parallel two-qubit gates at a detuning-noise insensitive point via exchange interaction.
Proposed a qubit grid defined by control lines, eliminating local components.

Conclusions:

The proposed architecture offers a simple and scalable approach for near-future quantum computation.
Shared control and a defined qubit grid pave the way for millions of qubits.
Enables advanced protocols like nonplanar quantum error correction.