Optimal quantum gates for semiconductor qubits
Ulrich Hohenester
TL;DR
This paper uses optimal control theory to design quantum gates for semiconductor qubits, effectively reducing decoherence effects from phonon interactions, thus advancing solid-state quantum computing.
Contribution
It introduces a novel application of optimal control to suppress decoherence in semiconductor qubits, demonstrating improved gate performance.
Findings
Decoherence due to phonons can be significantly suppressed.
Optimized gates outperform standard approaches in solid-state qubits.
Broader quantum control strategies are feasible in solid materials.
Abstract
We employ optimal control theory to design optimized quantum gates for solid-state qubits subject to decoherence. At the example of a gate-controlled semiconductor quantum dot molecule we demonstrate that decoherence due to phonon couplings can be strongly suppressed. Our results suggest a much broader class of quantum control strategies in solids.
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Taxonomy
TopicsQuantum Information and Cryptography · Semiconductor Quantum Structures and Devices · Quantum and electron transport phenomena