Changelog

All notable changes to this project will be documented in this file.

The format is based on a mixture of Keep a Changelog and Common Changelog. This project adheres to Semantic Versioning, with the exception that minor releases may include breaking changes.

Unreleased

Changed

• ⬆️ Update clang-tidy to version 23 (#1019) (@denialhaag)

2.6.0 - 2026-09-12

If you are upgrading: please see UPGRADING.md.

Added

• ✨ Add deterministic control-dependency qubit ordering for ideal circuit simulation and track input/output layouts in CircuitSimulator (#407) (@DuenzingerClaudia, @denialhaag, @burgholzer)

Changed

• 🔧 Use Ninja and shared CMake presets on all platforms, removing -windows from preset names (#1004) (@denialhaag)

• 💥 Require CMake 3.28 or newer for source builds and embedded projects (#998) (@burgholzer)

• ⬆️ Update mqt-core to version 3.10.0 (#995) (@denialhaag)

• ⬆️ Update nanobind to version 3.0.1 (#995) (@denialhaag)

• 💥 Require Python 3.11 or newer (#976) (@denialhaag)

• 📦 Publish one split-mode cp311-abi3 wheel for GIL-enabled CPython 3.11 and newer (#995) (@denialhaag)

• 📦 Publish one cp315-abi3t wheel for free-threaded CPython 3.15 and newer (#995) (@denialhaag)

• 💥 Raise the minimum Qiskit version from 1.1.0 to 2.1.0 (#995) (@denialhaag)

• ♻️ Own the circuit generators and DD gate matrices used by the command-line interface, tests, and noise simulation (#995) (@denialhaag)

• ♻️ Normalize circuits with QuantumComputation member operations (#995) (@simon1hofmann)

• 💥 Drop support for x86 macOS and stop publishing the respective wheels (#976) (@denialhaag)

• ⬆️ Raise the macOS deployment target to 13.3 to enable std::format in libc++ (#976) (@denialhaag)

• ♻️ Own recursive unitary construction (#975) (@simon1hofmann)

2.5.0 - 2026-08-20

If you are upgrading: please see UPGRADING.md.

Added

• 🐍 Start building CPython 3.15 wheels (#944) (@denialhaag)

Changed

• ⬆️ Update mqt-core to version 3.9.0 (#966) (@denialhaag)

• ⬆️ Update nanobind to version 2.15.0 (#966) (@denialhaag)

• ➕ Depend on nlohmann_json directly instead of relying on mqt-core to provide it (#955) (@denialhaag)

• ♻️ Own the noise-functionality test RNG (#954) (@simon1hofmann)

• 🚚 Vendor density-matrix DD support used by the noise-aware simulators, as it will be removed from mqt-core in version 4.0.0 (#940) (@denialhaag)

2.4.0 - 2026-07-09

If you are upgrading: please see UPGRADING.md.

Added

• 🚸 Add CMake presets to provide a standardized and reproducible way to configure builds (#871) (@denialhaag)

Changed

• ⬆️ Update mqt-core to version 3.7.0 (#911) (@denialhaag)

• ⬆️ Update nanobind to version 2.13.0 (#911) (@denialhaag)

• ⬆️ Update munich-quantum-toolkit/workflows to version v2.0.1 (#871) (@denialhaag)

Removed

• 📝 Remove support for generating LaTeX documentation (#912) (@denialhaag)

2.3.0 - 2026-05-13

If you are upgrading: please see UPGRADING.md.

Changed

• ⬆️ Update mqt-core to version 3.6.0 (#847) (@burgholzer)

• ⬆️ Update nanobind to version 2.12.0 (#847) (@burgholzer)

2.2.0 - 2026-02-19

If you are upgrading: please see UPGRADING.md.

Changed

• ⬆️ Update mqt-core to version 3.4.1 (#779) (@denialhaag)

• ⬆️ Update nanobind to version 2.11.0 (#779) (@denialhaag)

• 🔧 Replace mypy with ty (#770) (@denialhaag)

• ♻️ Migrate Python bindings from pybind11 to nanobind (#766, #773) (@denialhaag)

• 📦️ Provide Stable ABI wheels for Python 3.12+ (#766) (@denialhaag)

• 👷 Stop testing on ubuntu-22.04 and ubuntu-22.04-arm runners (#740) (@denialhaag)

• 👷 Stop testing with clang-19 and start testing with clang-21 (#740) (@denialhaag)

• 👷 Fix macOS tests with Homebrew Clang via new munich-quantum-toolkit/workflows version (#740) (@denialhaag)

• 👷 Re-enable macOS tests with GCC by disabling module scanning (#740) (@denialhaag)

Removed

• 🔥 Remove wheel builds for Python 3.13t (#740) (@denialhaag)

2.1.0 - 2025-10-15

If you are upgrading: please see UPGRADING.md.

Added

• ✨ Add support for Qiskit’s IfElse operations (#681) (@denialhaag)

• 👷 Enable testing on Python 3.14 (#674) (@denialhaag)

Changed

• ⬆️ Bump minimum required mqt-core version to 3.3.1 (#681) (@denialhaag)

Removed

• 🔥 Drop support for Python 3.9 (#645) (@denialhaag)

2.0.0 - 2025-08-04

If you are upgrading: please see UPGRADING.md.

Added

• 🐍 Start building CPython 3.14 wheels (#608) (@denialhaag)

• ✨ Add Windows 11 ARM64 wheels and C++ testing (#556) (@burgholzer)

Changed

• ♻️ Streamline names of Python modules and classes (#614) (@denialhaag)

• ⬆️ Bump minimum required mqt-core version to 3.2.1 (#610) (@denialhaag)

• ⬆️ Require C++20 (#610) (@denialhaag)

• ✨ Expose enums to Python via pybind11’s new (enum.Enum-compatible) py::native_enum (#607) (@denialhaag)

• ⬆️ Bump minimum required mqt-core version to 3.1.0 (#591) (@denialhaag)

• ⬆️ Bump minimum required pybind11 version to 3.0.0 (#591) (@denialhaag)

• ♻️ Move the C++ code for the Python bindings to the top-level bindings directory (#567) (@denialhaag)

• ♻️ Move all Python code (no tests) to the top-level python directory (#567) (@denialhaag)

• ⬆️ Support Qiskit 2.0 (#571) (@denialhaag)

• 🚚 Move MQT DDSIM to the munich-quantum-toolkit GitHub organization

• ♻️ Use the mqt-core Python package for handling circuits (#336) (@burgholzer)

• ⬆️ Bump minimum required CMake version to 3.24.0 (#538) (@burgholzer)

• 📝 Rework existing project documentation (#556) (@burgholzer)

Removed

• 🔥 Remove methods for querying maximum node count (#591) (@denialhaag)

• 🔥 Remove the TN flow from the path simulator (#336) (@burgholzer)

• 🔥 Remove some superfluous C++ executables (#336) (@burgholzer)

• 🔥 Remove support for .real, .qc, .tfc, and GRCS files (#538) (@burgholzer)

Fixed

• 🚸 Increase binary compatibility between mqt-ddsim and mqt-core (#606) (@denialhaag)

1.24.0 - 2024-10-10

📚 Refer to the GitHub Release Notes for previous changelogs.