IBM Quantum Resource Reduction, Standard-PC Quantum-Emulation Kernels and Rigetti Workflows, and OUXCHEM Chemistry Screening on HPC Systems

Abstract

This publication freezes the first completed evidence block of a joint Adriano Ciardo Labs (ACL) - TERRA-OUX validation programme spanning quantum-hardware resource use, classical quantum-emulation/QEC kernels, real-QPU context, and high-throughput chemistry screening on Aurora. The purpose is not to combine heterogeneous performance numbers into a single universal acceleration claim. Instead, each result is preserved within the computational boundary in which it was measured, and ACL terminology distinguishes independent verification of supplied execution evidence from independent re-execution. For the IBM Quantum line, the archived matched A/B record on backend ibm_marrakesh compares a RAW compiled Shor-15 order-readout run using 128 shots with a TERRA-OUX preconfigured run using 8 shots. Both passed the same predefined peak-mass threshold; the TERRA-OUX run therefore records an exact 16.0x shot-count ratio for this component. The compiled ISA depth changed from 104 to 63 and CZ operations from 27 to 18. Client wall time was approximately 16.59 s versus 16.84 s, so the result is explicitly not a 16x wall-clock speedup. Classical closure recovered order r=4 and factors 3 and 5. For the standard-PC QCEA line, ACL protocol-locked the frozen dense-GF(2)-reference versus sparse/vectorized syndrome benchmark. The locked local measurement files record a dense median reference time of 0.190476750 s, a vector median display time of 0.000021000 s, 1000 timed repetitions, exact bit-for-bit syndrome equality and a recorded median acceleration factor of 9070.353x. The acceleration applies only to the defined GF(2) component kernel. A historical matched whole-emulator A/B measurement remains separately recorded at 2.538x. For the OUXCHEM line, ACL independently verified the consolidated execution evidence for predeclared staged-spectrum workflows. Aurora results were 12.313x, 23.749x and 52.812x when detailed surrogate spectra were retained for 10%, 5% and 2% of candidates respectively, with corresponding local reference values of 21.038x, 58.162x and 119.584x. These are staged screening/routing measurements under changed predeclared output contracts, not identical-output speedups over VASP, Quantum ESPRESSO, CP2K, PySCF or another high-fidelity electronic-structure package. A later corrected Aurora R4 run established 11.275x 12-tile kernel scaling with 93.9585% efficiency; the earlier malformed rank-mapping subtest is retained as invalid for distributed-scaling claims. The accompanying Zenodo deposit includes reader-executable IBM and QCEA source code without source-code comments, extensive README and user-manual files, machine/protocol evidence, SHA-256 manifests and a non-commercial research-use license. Readers are encouraged to rerun the packages and publish the results they actually obtain, whether favourable or unfavourable.