Pulse-Level Scheduling of Quantum Circuits for Neutral-Atom Devices

Tsai, Richard Bing-Shiun, Silvério, Henrique, Henriet, Loc · 2022 · Physical Review Applied

| 编号 NA013 | 主题 编译、布局与调度 | DOI 10.1103/physrevapplied.18.064035 |

摘要

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2022 · Physical Review Applied We show how a pulse-level implementation of the multi-qubit gates in neutral-atom device architectures allows for the simultaneous execution of single- and multi-qubit gates acting on overlapping sets of qubits, in a mechanism we name absorption. With absorption as a foundation, we present an algorithm to schedule the execution of a quantum circuit as a pulse sequence on a neutral-atom device with a single channel for single- and multi-qubit gate execution. For any quantum circuit of practical relevance, we observe that the algorithm results in an optimal utilization of the available resources that cannot be surpassed by a different scheduling strategy. Our benchmarks against a custom scheduler attempting to maximize parallelization at the gate level show the time gained by the pulse-level scheduler is proportional to the depth and is most pronounced for quantum circuits with fewer qubits.

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