IBM Quantum Hardware Experiments

Verified quantum computing experiments on real IBM hardware.

• ibm_fez — 156 qubits, Heron R2
• ibm_torino — 133 qubits, Heron R1

Key Results

Experiment	Result
Bell fidelity	94.4% (C=0.888)
BB84 QBER degradation	82×
Reproducibility	χ²=2.70, p=0.44
Total shots	39,010

Note: job d5sd9mveglic739vatm0 (previously reported as 96.3% Bell fidelity) is flagged as anomalous — its measured distribution is concentrated in a single basis state (Shannon entropy 0.278), which is inconsistent with a Bell state in the computational basis. Its fidelity/concurrence metrics are recorded as N/A in the dataset; the best verified Bell result is 94.4% (job d5sd2ioubqnc73c4im80, 4000 shots).

Citation

Hatibović, D. (2026). Verified IBM Quantum Hardware Experiments (Version 1.1.1) [Computer software]. Zenodo. https://doi.org/10.5281/zenodo.21427292

The concept DOI above resolves to the latest archived version. v1.1.1 is a metadata-only patch; the latest Zenodo deposit is v1.1.0 (https://doi.org/10.5281/zenodo.21427293).

See CITATION.cff for machine-readable citation metadata.

Repository Structure

.
├── parse_ibm_json.py          — parser for IBM SamplerV2 result data
├── data/
│   ├── quantum_results_verified.csv  — processed table of experiment metrics
│   ├── results/                — reserved: raw IBM job-*-info.json / job-*-result.json exports
│   ├── circuits/                — reserved: QASM / IBM Quantum Composer circuit files
│   ├── calibration/             — reserved: IBM backend calibration exports
│   ├── raw_bitarrays/           — reserved: raw decoded BitArray dumps
│   └── checksums/               — SHA-256 checksums of tracked release files
├── figures/                    — experiment visualization figures
├── stats_report.pdf            — statistical report generated from decoded IBM result data
├── analysis/                    — reserved for additional analysis scripts (currently empty; see docs/REPOSITORY_MAP.md)
├── notebooks/                   — reserved for exploratory notebooks (currently empty)
├── latex/                       — arXiv preprint source (factual scaffold; narrative sections pending, see docs/ARXIV_PREP.md)
├── scripts/                     — maintenance scripts (smoke test, checksum verification)
├── tests/                       — reserved for automated tests (currently empty)
├── release/                     — per-release notes and manifests
├── docs/                        — repository documentation (see list below)
├── .github/                     — issue/PR templates and CI workflows
├── CHANGELOG.md
├── CITATION.cff
├── CODE_OF_CONDUCT.md
├── CONTRIBUTING.md
├── LICENSE
├── requirements.txt
└── environment.yml / Dockerfile — reproducible environment definitions

Documentation index:

• docs/JOB_IDS.md — IBM Quantum job identifiers.
• docs/PARSER_FUNCTION_MAP.md — parser function index.
• docs/DATA_AVAILABILITY.md — current data availability manifest.
• docs/REPOSITORY_MAP.md — full repository layout.
• docs/CHECKSUMS.md — how release file checksums are generated and verified.
• docs/RUNTIME_SAFETY.md — parser runtime/safety notes.
• docs/ARXIV_PREP.md — honest checklist of what's needed before an arXiv submission.
• docs/NATURE_READINESS.md — honest gap analysis against npj Quantum Information submission guidelines.

Empty reserved directories (analysis/, notebooks/, tests/, data/results/, data/circuits/, data/calibration/, data/raw_bitarrays/) are tracked with .gitkeep and intentionally contain no placeholder code — they are populated only when real content exists (see docs/NATURE_READINESS.md and CHANGELOG.md for the rationale). latex/ is no longer empty (see docs/ARXIV_PREP.md).

Data Availability

This repository currently includes processed CSV results, a statistical PDF report, parser code and experiment figures. Raw IBM JSON exports, QASM circuit files and backend calibration exports are not currently included.

See docs/DATA_AVAILABILITY.md for the current file availability status.

Figures

Experiment figures are available in figures/:

• fig1_bell_state_comparison.png
• fig2_reproducibility.png
• fig3_bb84_d5sd7.png
• fig4_bb84_control_group.png
• fig5_qrng_8bit.png
• fig6_vqc_4qubit.png
• fig7_entanglement_metrics.png
• fig8_timeline_summary.png

Contributing

See CONTRIBUTING.md and CODE_OF_CONDUCT.md.