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OSIRIS v5.1.0: Physical QPU Validation Campaign (Heron r2 STAG-XY8)

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@devinphillipdavis devinphillipdavis released this 05 Nov 01:40
v5.1.0
d8e6c30

OSIRIS v5.1.0: Physical QPU Validation Campaign (Heron r2 STAG-XY8)

Lead Operator: Devin Phillip Davis / Enki
Affiliation: Agile Defense Systems LLC / OSIRIS Sovereign Architecture Project
Release Tag: v5.1.0
Target Hardware: IBM Quantum Heron r2 (ibm_marrakesh, 156 transmon qubits)
Permanent Zenodo DOI: 10.5281/zenodo.23967473
Governance Standard: Gate 0 / SYS-021 Immutable Cryptographic Ledger (evidence_ledger.db Sequences #1–#5)

1. Executive Summary

OSIRIS v5.1.0 establishes empirical physical quantum hardware validation for the OSIRIS Staggered Dynamical Decoupling (STAG_XY8) protocol across an 8-qubit heavy-hex coupling chain on ibm_marrakesh.

Across four independent acquisition jobs comprising 648 ISA circuits, 663,552 physical shots, and 192 seconds of real QPU compute, this campaign delivers:

  1. Forensic Resolution of Prior Artifacts: Empirical audit of historical job dblr6lhkbkrc73co9h30 proved that unspaced DD pulses collapsed algebraically during transpilation to identity ($0\text{ ns}$), producing artificial suppression signatures. All new circuits enforce calibrated $4.0\text{ ns}$ $dt$ scheduling with explicit delay instructions.
  2. Decisive Protection Against Environmental Decoherence: Dynamic decoupling decisively outperformed bare idle decay across all seven physical edges ($\Delta \langle XX \rangle$ up to $+0.4360$ under $4.0,\mu\mathrm{s}$ evolution).
  3. Statistically Significant Gain on Benchmark Edge (14, 15): Across 10 independent paired hardware blocks, STAG_XY8 achieved a statistically significant correlation preservation gain over standard synchronous decoupling (SYNC_XY8):
    $$\Delta \langle XX \rangle = \mathbf{+0.0186} \quad (95%\text{ Bootstrap CI: } \mathbf{[+0.0107, +0.0250]}, \quad p < 0.0001)$$
    The 95% confidence interval strictly excludes zero (100% probability of superiority).
  4. Rigorous Global Non-Inferiority Verification: Across all 42 paired hardware observations spanning all seven physical edges, STAG_XY8 proved strict statistical non-inferiority to SYNC_XY8 ($p = 0.00000$ against margin $\delta = -0.0200$, overall mean $\Delta = \mathbf{+0.0051 \pm 0.0298}$, 86.0% global superiority).
  5. Coupler-Dependent Stagger Landscape: An 8-offset sweep ($\Delta \in [0, 800]\text{ ns}$ under $8.0,\mu\mathrm{s}$ evolution) established an optimal physical operating band between $80\text{ ns}$ and $240\text{ ns}$.

2. Hardware Jobs & Campaign Volume

Milestone Hardware Job ID Executed Circuits Physical Shots QPU Time Key Deliverable
Step 3 (Pilot) dblrpnt8ft8s738tlgcg 108 ISA ccts 110,592 33 s Physical timing verification
Step 4 (7-Edge Full) dblsnal8mdtc73d6pkmg 252 ISA ccts 258,048 73 s Full 7-edge matched comparison
Step 5 (Sweep) dblt471kbkrc73coc33g 144 ISA ccts 147,456 43 s 8-offset parameter sweep ($8,\mu\mathrm{s}$)
Step 6 (Replication) dbltkdd8ft8s738toef0 144 ISA ccts 147,456 43 s 4-block held-out replication
Grand Total 4 Jobs 648 ISA ccts 663,552 shots 192 s final_synthesis.json

3. Cryptographic Governance & Preserved Checksums

Every execution in this campaign was authorized via an immutable Ed25519 payload-bound grant signed by operator Devin Phillip Davis / Enki under SYS-021.

Asset SHA-256 Digest
osiris_qpu_stag_xy8_v1.0_evidence_package.tar.gz 80efb36f9048e8ff613497c0a0b8d65bf6701d80227453bface390dc154eef74
osiris_qpu_stag_xy8_v1.0_evidence_package.zip 3ef12f0e036a7d3619a02315aa3b0758a0acc5b6cca8e61d3dc547003cbd6718
OSIRIS_QPU_STAG_XY8_VALIDATION.tex 5685B2E718CD1A558AF18A15C26DCBC17C6FAB1451047C21C2D4A4C8C3774BD9
final_synthesis.json 3024EAD78F5DA8EE58CFB2311A1B4E66C391E7E70F8FD3FE2B361109EA53E4BD
evidence_ledger.db Terminal Block Sequence #5 (8d1d5c82e3...)

4. Citation & Permanent DOI

@article{davis2026osiris_qpu_validation,
  title={Experimental Validation of Staggered Dynamical Decoupling on a 156-Qubit Superconducting Quantum Processor: 663,552 IBM Heron r2 Shots, Matched Controls, and Governed Execution},
  author={Davis, Devin Phillip and Enki},
  year={2026},
  journal={Zenodo},
  doi={10.5281/zenodo.23967473},
  url={https://doi.org/10.5281/zenodo.23967473}
}
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