QTAU - Hardware-Agnostic Execution

A core architecture that seamlessly runs and accelerates quantum algorithms on diverse QPUs (IBM, IonQ, Google) with zero code changes.

QTAU - Hardware-Agnostic Execution (QTAU Connector Workbench) is the MATLAB R2025b+ desktop client for the QTAU FastAPI quantum execution platform. It lets you design, run, mitigate, and analyse quantum-circuit experiments against quantum hardware backends through a single unified workbench — with no Qiskit knowledge required and no leaving MATLAB.

Built on a clean three-layer architecture (presentation, domain, infrastructure), externalised configuration (resources/*.properties, runtime-reloadable), and unit-tested service classes that work both interactively from the workbench UI and programmatically from your own MATLAB scripts.

What you get

20+ workflow screens covering circuit upload, in-app composer, analysis, backend exploration, benchmark planning, fidelity prediction, error-mitigation cost comparison, fault-tolerant resource estimation, cost-aware run planning, job monitoring, results review, reports, QEC simulation, and 3D QEC visualization.

In-app Composer with a click-to-place gate palette, a bidirectional OpenQASM 2.0 mirror, and a 12-template gallery (Bell, GHZ, QFT, Grover, Bernstein-Vazirani, Deutsch-Jozsa, Phase Estimation, VQE H2, QAOA, Trotter, Teleport, Superdense). A collapsible Inspect footer runs a local statevector simulator up to 14 qubits with per-qubit Bloch sphere tiles. One-click code export writes the same circuit out as OpenQASM 2/3, Qiskit Python, Cirq Python, and AWS Braket Python.

Reproducibility Bundle — a one-click ZIP that packages your circuit as QASM plus equivalents in three Python ecosystems, plus optional backend calibration snapshot, plus optional mitigation estimates, plus a fault-tolerant resource estimate, plus an auto-generated README, plus a manifest with SHA-256 checksums of every artefact. Share or archive your experiment with cryptographic provenance.

Cost-aware Run Planner — pick a target fidelity, and the planner cross-multiplies prediction scores with mitigation-strategy costs across every available backend, computes the Pareto frontier, and recommends the cheapest configuration that hits your target.

Mitigation Compare — side-by-side cards for None / Minimal / Standard / Aggressive / Custom mitigation strategies, showing cost, shot multiplier, runtime, and IQP-cost across every chip in your selection. Pick deliberately rather than guess.

Quantum Monte Carlo simulation — a modal QMC popup launched from the Analysis screen runs QAE-based Monte Carlo risk analytics against either a local statevector backend or IBM Runtime. Asynchronous job execution with polling progress overlay, zero-noise extrapolation on by default, vector-chart PDF report builder, and IBM execution-log JSONL download.

Quantum error correction — a pure-MATLAB density-matrix simulator for the bit-flip, phase-flip, Shor-9, Steane-7, perfect-5, and surface codes under four noise models. No backend required. A companion 3D QEC visualization screen renders the Bloch sphere, surface-code lattice, and error-propagation animation.

Prerequisites

MATLAB R2025b or later.

A reachable QTAU FastAPI server. The toolbox is the client only and does not include the backend. On first launch the Base URL field is blank — set it via the Login dialog or Settings → Connection.

Getting started

After install, type QTAUWorkbenchLauncher at the MATLAB prompt. The bundled Getting Started guide is accessible via Add-Ons → Manage Add-Ons → QTAU - Hardware-Agnostic Execution → Options → Getting Started.

Three runnable Live Scripts ship under doc/examples/ — local QEC simulation, circuit visualisation, and programmatic FastAPI browsing. Two run offline with no backend.

Links and citation

Source code, issue tracker, and backend setup notes: https://github.com/sqkcloud/sqk-qtau-matlab

License: Apache 2.0. See LICENSE and NOTICE inside the toolbox.

For academic citation, see CITATION.cff at the repository root. GitHub renders a "Cite this repository" button with BibTeX, APA, and EndNote exports.