ArticleScientific reports2026
Benchmarking engineered exchange interactions on NISQ hardware.
Article in Scientific reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Engineered exchange interactions, realized through the iSWAP and [Formula: see text] gates, play a fundamental role in entangling operations for quantum algorithms, simulation of spin-exchange dynamics, and optimized qubit connectivity. In this work, we present hardware-aware implementations of the iSWAP and [Formula: see text] gates tailored to superconducting quantum processors, along with comprehensive characterization using both quantum process tomography (QPT) and direct state measurements (DSM). QPT results show process fidelities of 97.32% (iSWAP) and 98.02% ([Formula: see text]) on quantum simulator, decreasing to 89.72% and 87.65% on quantum hardware, respectively. DSM on the [Formula: see text] input state reveals that the iSWAP implementation achieves higher state preservation fidelity on hardware (93.53% vs. 92.44% for [Formula: see text]) but shows higher measured [Formula: see text] population (2.26% vs. 0.38%). These results establish a benchmark for anisotropic exchange gates on noisy intermediate-scale quantum (NISQ) hardware and provide quantitative performance data to inform gate selection for quantum circuit design in the NISQ era.
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