Randomized benchmarking of single qubit gates in a 2D array of neutral atom qubits

TL;DR

This paper demonstrates high-fidelity single-qubit gate operations in a 2D array of neutral atom qubits using randomized benchmarking, achieving fidelities above 0.99 for both global and site-specific gates, with minimal crosstalk.

Contribution

It introduces a method for high-fidelity, site-selective single-qubit gates in a neutral atom array, with detailed benchmarking and crosstalk analysis.

Findings

Global gate fidelity of 0.9983(14) in a 49-qubit array.

Site-specific gates achieved fidelity of 0.9923(7).

Low crosstalk error of 0.002(9) at Stark-selected sites.

Abstract

We characterize single qubit Clifford gate operations with randomized benchmarking in a 2D array of neutral atom qubits, and demonstrate global and site selected gates with high fidelity. An average fidelity of $F^2=0.9983(14)$ is measured for global microwave driven gates applied to a 49 qubit array. Single site gates are implemented with a focused laser beam to Stark shift the microwaves into resonance at a selected site. At Stark selected single sites we observe $F^2=0.9923(7)$ and an average spin flip crosstalk error at other sites of $0.002(9)$.