Trapped-ion Quantum Charge-Coupled Device (QCCD) architectures promise scalability through interconnected trap zones and dynamic ion transport; however, this transport capability creates a complex compilation challenge: how to move qubits efficiently without degrading fidelity. We introduce a routing strategy that turns this challenge into an advantage by exploiting operational parallelism across traps while adapting to both algorithmic structure and device topology through a configurable multi-parameter scoring mechanism. Across a broad suite of benchmarks and QCCD layouts, the method consistently reduces ion-transport overhead and improves execution fidelity, outperforming state-of-the-art routing techniques. These results highlight that explicitly balancing movement overhead and execution parallelism under architectural constraints is key to unlocking the full potential of modular trapped-ion quantum processors.
@article{arxiv.2603.19969,
title = {Adaptive Parallelism-Aware Qubit Routing for Ion Trap QCCD Architectures},
author = {Anabel Ovide and Andreu Angles-Castillo and Carmen G. Almudever},
journal= {arXiv preprint arXiv:2603.19969},
year = {2026}
}