QEF: Reproducible and Exploratory Quantum Software Experiments

Vincent Gierisch, Wolfgang Mauerer

Commercially available Noisy Intermediate-Scale Quantum (NISQ) devices now make small hybrid quantum-classical experiments practical, but many tools hide configuration or demand ad-hoc scripting. We introduce the Quantum Experiment Framework (QEF): A lightweight framework designed to support the systematic, hypothesis-driven study of quantum algorithms. Unlike many existing approaches, QEF emphasises iterative, exploratory analysis of evolving experimental strategies rather than exhaustive empirical evaluation of fixed algorithms using predefined quality metrics. The framework's design is informed by a comprehensive review of the literature, identifying principal parameters and measurement practices currently reported in the field. QEF captures all key aspects of quantum software and algorithm experiments through a concise specification that expands into a Cartesian product of variants for controlled large-scale parameter sweeps. This design enables rigorous and systematic evaluation, as well as precise reproducibility. Large sweeps are automatically partitioned into asynchronous jobs across simulators or cloud hardware, and ascertain full hyper-parameter traceability. QEF supports parameter reuse to improve overall experiment runtimes, and collects all metrics and metadata into a form that can be conveniently explored with standard statistical and visualisation software. By combining reproducibility and scalability while avoiding the complexities of full workflow engines, QEF seeks to lower the practical barriers to empirical research on quantum algorithms, whether these are designed for current NISQ devices or future error-corrected quantum systems.

Bhomic Kaushik, Ankit Rajpal, Naveen Kumar

Tom Stevns

Abstract This paper presents Phase 1 of the Soft Spaces project, a software-based investigation of hidden structures in low-qubit Hilbert spaces. The study explores whether systematic subspaces can be identified through controlled REAL–NULL comparisons, combined with dynamical analysis based on the Lindblad equation. Experiments were performed on four- to eight-qubit systems. The observed structures were evaluated using statistical and dynamical metrics, including subspace stability and reproducibility across repeated simulations. The results are presented as exploratory research. They do not claim a new physical theory but suggest that the identified structures may warrant further investigation. Future work will extend the analysis to larger Hilbert spaces and examine whether the same methodology can be reproduced in quantum computing frameworks such as Qiskit.

Macario Polo, Manuel Serrano, Ignacio García‐Rodríguez de Guzmán

Игорь Евгеньевич Проценко

Based on the first principles of quantum mechanic the density of probability distribution function W(x,p) is created for quantum electromagnetic field (QEF) - Figs. 1, 2. Unlike a well-known distributions of density of quasi-probability (as Wigner function et.c.) W(x,p) can be measured directly in 8-port homodyne experiment or in the experiment we propose. Using W(x,p) one can calculate the probability to have the field quadratures x and p in a chosen area of a phase space, find the minimum in amplitude or phase fluctuations of QEF. W(x,p) predicts the lemniscate-of-ellipse shape of the dispersion of squeezed QEF (Loudon, 1989; Kimble, 1986). Using a methods of quantum optic in experimental study of W(x,p) one can reconstruct the wave function of QEF and, in principle, the wave function of an emitting substance.

Macario Polo