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Mitigating Crosstalk in Quantum Computers through Commutativity-Based Instruction Reordering
Time
Location
Event Type
Research Manuscript
Virtual Programs
Hosted in Virtual Platform
Keywords
Quantum Computing
Topics
Design
DescriptionCrosstalk is a major noise type in quantum computers. Previous approaches either rely on hardware innovations that may not be widely applicable or fail to fully explore instruction parallelism. To address these challenges, we propose a commutativity-based instruction reordering approach. We propose a complete set of commutativity rules for main types of quantum gates to reorder error-prone gates for crosstalk mitigation. The approach captures both forward and backward instruction correlation and further considers decoherence. Evaluation of 117 benchmarks shows that our approach can significantly improve program fidelity by up to 120% compared with the state of the art.