{
  "id": "2308.05071",
  "version": "v1",
  "published": "2023-08-09T17:02:55.000Z",
  "updated": "2023-08-09T17:02:55.000Z",
  "title": "Benchmarking a trapped-ion quantum computer with 29 algorithmic qubits",
  "authors": [
    "Jwo-Sy Chen",
    "Erik Nielsen",
    "Matthew Ebert",
    "Volkan Inlek",
    "Kenneth Wright",
    "Vandiver Chaplin",
    "Andrii Maksymov",
    "Eduardo Páez",
    "Amrit Poudel",
    "Peter Maunz",
    "John Gamble"
  ],
  "comment": "12 pages, 9 figures",
  "categories": [
    "quant-ph"
  ],
  "abstract": "Quantum computers are rapidly becoming more capable, with dramatic increases in both qubit count and quality. Among different hardware approaches, trapped-ion quantum processors are a leading technology for quantum computing, with established high-fidelity operations and architectures with promising scaling. Here, we demonstrate and thoroughly benchmark the IonQ Forte system: configured here as a single-chain 30-qubit trapped-ion quantum computer with all-to-all operations. We assess the performance of our quantum computer operation at the component level via direct randomized benchmarking (DRB) across all 30 choose 2 = 435 gate pairs. We then show the results of application-oriented benchmarks, indicating that the system passes the suite of algorithmic qubit (AQ) benchmarks up to #AQ 29. Finally, we use our component-level benchmarking to build a system-level model to predict the application benchmarking data through direct simulation, including error mitigation. We find that the system-level model correlates well with the observations in many cases, though in some cases out-of-model errors lead to higher predicted performance than is observed. This highlights that as quantum computers move toward larger and higher-quality devices, characterization becomes more challenging, suggesting future work required to push performance further.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2023-08-09T17:02:55.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "trapped-ion quantum computer",
      "algorithmic qubit",
      "cases out-of-model errors",
      "system-level model correlates",
      "quantum computers move"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 12,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}