Skip to content

OSIRIS v5.3.0: Dual-Component Quantum Control Resolution & Empirical Frontier Validation

Choose a tag to compare

View all tags
@devinphillipdavis devinphillipdavis released this 05 Nov 15:06
· 94 commits to main since this release
v5.3.0
2a6e5ab

OSIRIS v5.3.0: Dual-Component Quantum Control Resolution & Empirical Frontier Validation

Summary of Release

OSIRIS v5.3.0 delivers the definitive empirical resolution of multi-qubit dynamical decoupling (DD) on heavy-hex fixed-frequency transmon processors. Building upon the formal v5.2.0 foundation, this release incorporates the complete empirical findings from Experiments E3 and E4 on IBM Quantum Heron r2 hardware (ibm_fez and ibm_marrakesh), the visual audit and mathematical resolution of harmonic aliasing in conditional Ramsey characterizations, and the formulation of the unified Dual-Component Quantum Control Model.

All datasets, circuit manifests, QPY binaries, and analysis receipts are anchored in an immutable 24-block SQLite cryptographic authority chain (evidence_ledger.db) under SYS-021.

Key Scientific Deliverables & Hardware Receipts

1. Falsification of Naive Parameter Portability (Experiment E3 on ibm_fez)

  • Hardware Job ID: dbm86158ft8s738ucqi0 (81 circuits, 82,944 shots, $K = 3$ randomized blocks)
  • SYS-021 Authority: Ledger Block #20 (bfbbb33e444dde53...)
  • Empirical Findings: The adaptive single-qubit dephasing saturation model ($\eta_\phi$) calibrated on ibm_marrakesh failed to achieve cross-chip transfer advantage on ibm_fez ($\Delta \mathcal{F}{\text{transfer}} = -0.803 \pm 0.601\text{ pp}, t_8 = -1.335, p = 0.218$). Fixed 80 ns staggering and synchronous XY8 performed identically ($\Delta \mathcal{F}{\text{stag}} = +0.109 \pm 0.461\text{ pp}, p = 0.820$), demonstrating that single-qubit coherence parameters cannot govern multi-qubit control without chip-specific crosstalk Hamiltonian learning.

2. Resolution of Harmonic Aliasing in Spectator Crosstalk

  • Audited Data: experiments/experiment_e/analysis_zz_ramsey_14_15.json & experiments/experiment_e/analysis_zz_ramsey.json
  • SYS-021 Authority: Ledger Blocks #21 (2f68ab441b79...) & #22 (21bd458d7438...)
  • Hardware Jobs: dbm8ni674qds73drr68g (Edge 61,62) & dbm8q31kbkrc73cp2bng (Edge 14,15) on ibm_marrakesh
  • Diagnosis: Non-linear least squares fitting trapped in a harmonic alias ($1,166\text{ kHz}$) due to initial cosine phase alignment. Re-fitting with the physical fundamental phase parameter ($\phi = \pi, A \approx -0.49$) revealed the true Hamiltonian crosstalk rates:
    • Primary Coupler (14, 15): $f_A = 482.885 \pm 5.169\text{ kHz}$, $f_B = 476.545 \pm 4.620\text{ kHz}$, $\Delta f = 6.340\text{ kHz}$, static $ZZ$ coupling $\zeta_{14,15} = 3.170 \pm 5.169\text{ kHz}$ ($19.92\text{ krad/s}$, accumulating $9.13^\circ$ drift over $8,\mu\text{s}$).
    • Control Coupler (61, 62): $f_A = 497.476\text{ kHz}$, $f_B = 496.895\text{ kHz}$, $\Delta f = 0.580\text{ kHz}$, static $ZZ$ coupling $\zeta_{61,62} = 0.290\text{ kHz}$ ($1.82\text{ krad/s}$, accumulating $0.83^\circ$ drift).

3. Experiment E4: Pulse-Overlap Fingerprinting

  • Hardware Job ID: dbm9ctu74qds73drs9j0 (72 circuits, 73,728 shots, $K = 2$ randomized blocks)
  • SYS-021 Authority: Ledger Block #24 (198f70d975e1dcccd950c25346305283047026c49afe670cf94917e3026e974d)
  • Real QPU Runtime Consumed: 23 seconds (Account total: $618\text{ s} / 600\text{ s}$)
  • Mechanistic Verdict:
    • Evaluated bilateral pulse offsets $\Delta \in {0, 16, 32, 48, 80, 160}\text{ ns}$ across the native $32\text{ ns}$ single-qubit pulse envelope.
    • Boundary contact at $\Delta = 32\text{ ns}$ recovered only $9.5%$ of total fidelity delta ($+0.10\text{ pp}$ vs $+1.03\text{ pp}$ total), failing the pre-registered Microwave Pulse Collision Avoidance (MPCA) criterion ($\ge 75%$).
    • Decisively establishes the Dual-Component Model: high-frequency pulse collision contributes only fractional infidelity ($\le 10%$), while the dominant gain arises from macroscopic timing offsets ($\Delta = 160\text{ ns}$) acting as a phase-conjugate cancellation knob against coherent static Hamiltonian crosstalk.

4. Manuscript Draft for Peer Review

  • Added formal publication manuscript draft in paper/manuscript_dual_component_quantum_control.tex targeting Physical Review Letters / Nature Physics.

Cryptographic Ledger Verification

Sequence Event Type Block Hash Digest Notes
#20 SYS021_EXP_E3_FEZ_RUNTIME_EXECUTION bfbbb33e444dde53... Exp E3 Job dbm86158ft8s738ucqi0 on Fez
#21 SYS021_ZZ_RAMSEY_CHARACTERIZATION_GRANT 2f68ab441b791341... ZZ-Ramsey Job dbm8ni674qds73drr68g on (61,62)
#22 SYS021_ZZ_RAMSEY_14_15_GRANT 21bd458d7438c1f4... ZZ-Ramsey Job dbm8q31kbkrc73cp2bng on (14,15)
#23 SYS021_MULTI_NODE_SYNC_AND_RELEASE_GRANT 5e14e5990de70269... Multi-node tracking branch sync
#24 SYS021_EXP_E4_FINGERPRINTING_GRANT 198f70d975e1dccc... Exp E4 Job dbm9ctu74qds73drs9j0 on Marrakesh
#25 SYS021_V530_ZENODO_AND_GITHUB_RELEASE_GRANT (Committing with release) Official v5.3.0 Release Anchor

Assets Included

  • Complete source repository archive (osiris_research_evidence_v5.3.0.zip and .tar.gz)
  • Cryptographic SHA-256 digests (SHA256SUMS.txt)
  • Updated Frontier Report (EXPERIMENT_E_FRONTIER_REPORT.md with Sections 9 & 10)
  • Verified raw count dictionaries and analysis receipts for Experiments E3, ZZ-Ramsey, and E4
  • Publication manuscript source (paper/manuscript_dual_component_quantum_control.tex)
Assets 8
Loading