MQT Core 4.0 Released — Quantum-Classical Compilation at the Heart of MQT
MQT Core 4.0 brings quantum-classical compilation, measurement feedback, and device integration into the core of the Munich Quantum Toolkit — a major step toward software infrastructure fit for fault-tolerant quantum computing.
Quantum computing is no longer just about quantum circuits. Modern quantum programs increasingly combine gates with classical control flow, loops, and measurement feedback — the essential building blocks of future fault-tolerant systems. MQT Core 4.0 is built around exactly this reality.
The release integrates the MLIR/LLVM-based MQT Compiler Collection directly into MQT Core, giving developers a unified foundation for quantum-classical workflows. Key capabilities include:
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Building and optimizing structured quantum-classical programs via Python, C++, or mqt-cc
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Compiling for a device’s native gates and connectivity, including placement, routing, and synthesis
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Connecting OpenQASM and Qiskit workflows with QIR and jeff program exchange
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Compiling for a QDMI device and executing locally using decision-diagram simulation
Getting started is straightforward: the Python package bundles the compiler infrastructure and local simulator out of the box, and the documentation offers six practical entry points covering the most common workflows.
MQT Core 4.0 is fully open source.