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Updated: May 8, 2026

Nanofabrication of Gate-defined GaAs/AlGaAs Lateral Quantum Dots

Nanofabrication of Gate-defined GaAs/AlGaAs Lateral Quantum Dots

Published on: November 1, 2013

Simultaneous deterministic control of distant qubits in two semiconductor quantum dots.

A Gamouras¹, R Mathew, S Freisem

¹Department of Physics and Atmospheric Science, Dalhousie University , Halifax, Nova Scotia B3H4R2, Canada.

|September 5, 2013

Summary

This summary is machine-generated.

Researchers optimized quantum control (OQC) in semiconductor quantum dots. They achieved high-fidelity single qubit gates using engineered femtosecond pulses, enhancing quantum hardware scalability.

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Area of Science:

Quantum physics
Solid-state systems
Quantum information science

Background:

Optimal quantum control (OQC) uses tailored Hamiltonians for precise quantum state manipulation.
OQC is increasingly applied to optimize quantum gates in atomic and molecular systems.

Purpose of the Study:

To experimentally implement OQC in a solid-state system using semiconductor quantum dots.
To demonstrate simultaneous high-fidelity single qubit gates in distinguishable quantum dots.

Main Methods:

Utilized femtosecond pulse-shaping techniques to tailor control Hamiltonians.
Employed adaptive feedback algorithms for optimization.
Implemented OQC in a solid-state system of distinguishable semiconductor quantum dots.

Main Results:

Demonstrated simultaneous high-fidelity π and 2π single qubit gates.
Achieved gate operations in two different quantum dots using a single engineered infrared femtosecond pulse.

Conclusions:

Enhanced the scalability of semiconductor-based quantum hardware.
Laid the foundation for applying pulse shaping to optimize quantum gates in other solid-state systems.