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ibm-150q-ising-hardware-results

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p
int64
job_id
string
quantum_seconds
int64
pubs
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shots_per_pub
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shots
int64
two_qubit_gates
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compiled_depth
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mean_approximation_ratio
float64
best_sample_approximation_ratio
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1
d9gke4bsbqfc73eoovq0
24
10
8,192
81,920
334
381
0.673329
0.847399
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d9gk9kjsbqfc73eoops0
57
50
4,096
204,800
668
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0.690332
0.820809
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57
50
4,096
204,800
1,002
431
0.704814
0.843931
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d9gkj98gk0ls73f1mspg
57
50
4,096
204,800
1,336
456
0.726252
0.857803
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d9gkle3sbqfc73eop9tg
58
50
4,096
204,800
1,670
481
0.73567
0.892486
6
d9gknv4honhs73abouig
58
50
4,096
204,800
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506
0.73905
0.877457
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d9gkq3ogk0ls73f1n5tg
58
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4,096
204,800
2,338
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IBM 150-Qubit Ising Hardware Results

Auditable results from a hardware-native, 150-active-qubit Ising/QAOA study on IBM ibm_fez, accompanied by an exact classical baseline and explicit scientific claim boundaries.

Headline evidence

Item Verified value
Active physical qubits 150
Processor qubits 156
Successful hardware jobs 15
QPU usage 599 seconds
PUBs 547
Shots 2,087,936
QAOA depths p=1 through p=8
Exact classical optimum 865 / 873, MIP gap 0
Replicated best mean p=6, 0.742274
Replicated best sample p=6, 0.915607

The 15 successful jobs consist of the 14 entries in the primary job ledger plus the final p5/p6 confirmation job. Together they reconcile exactly to 599 QPU seconds, 547 PUBs, and 2,087,936 shots.

Configurations

  • depth_curve: compiled circuit size and approximation ratios across QAOA depth p=1…8.
  • mitigation_ablation: raw, dynamical-decoupling, randomized-twirling, and combined settings.
  • replicated_confirmation: 22 independent replicates each for p=5 and p=6.
  • jobs: the complete 15-job successful hardware ledger, including the final confirmation.

The evidence/ directory retains the canonical release summary, experiment ledger, and source manifest. SHA256SUMS covers the packaged evidence and tables.

Findings

The initial sweep reached its best mean approximation ratio at p=6 (0.739050). The independent confirmation again favored p=6 (0.742274 ± 0.000152 standard error). Dynamical decoupling alone slightly improved the p=1 mean, while twirling and the combined setting did not improve this workload.

Truth boundary

  • Hardware execution: verified.
  • Exact classical baseline: verified.
  • Quantum acceleration: not measured.
  • Quantum advantage: not claimed.
  • Production winner for this instance: classical HiGHS.

This is experimental evidence, not a claim that quantum optimization outperformed the exact classical solver.

Provenance and reproducibility

Citation 

@dataset{thakur_2026_ibm_150q_ising,
  author = {Sankalp Thakur},
  title = {IBM 150-Qubit Ising Hardware Results},
  year = {2026},
  publisher = {Hugging Face},
  url = {https://huggingface.co/datasets/sankalpsthakur/ibm-150q-ising-hardware-results}
}
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