# Benchmarking an 11-qubit quantum computer

## TL;DR

This paper presents an 11-qubit trapped ion quantum computer with high fidelity gates, demonstrating the execution of benchmark algorithms that outperform other existing hardware, showcasing its potential for quantum computing applications.

## Contribution

The paper introduces a fully-connected 11-qubit trapped ion quantum computer with high gate fidelities and benchmarks its performance using standard algorithms.

## Key findings

- Achieved 99.5% single-qubit gate fidelity
- Achieved 97.5% two-qubit gate fidelity
- Successfully executed benchmark algorithms with high success rates

## Abstract

The field of quantum computing has grown from concept to demonstration devices over the past 20 years. Universal quantum computing offers efficiency in approaching problems of scientific and commercial interest, such as factoring large numbers, searching databases, simulating intractable models from quantum physics, and optimizing complex cost functions. Here, we present an 11-qubit fully-connected, programmable quantum computer in a trapped ion system composed of 13 $^{171}$Yb$^{+}$ ions. We demonstrate average single-qubit gate fidelities of 99.5$\%$, average two-qubit-gate fidelities of 97.5$\%$, and state preparation and measurement errors of 0.7$\%$. To illustrate the capabilities of this universal platform and provide a basis for comparison with similarly-sized devices, we compile the Bernstein-Vazirani (BV) and Hidden Shift (HS) algorithms into our native gates and execute them on the hardware with average success rates of 78$\%$ and 35$\%$, respectively. These algorithms serve as excellent benchmarks for any type of quantum hardware, and show that our system outperforms all other currently available hardware.