QUT: A Unit Testing Framework for Quantum Subroutines

• URL: http://arxiv.org/abs/2509.17538v1
• Date: Mon, 22 Sep 2025 08:57:32 GMT
• Title: QUT: A Unit Testing Framework for Quantum Subroutines
• Authors: Mykhailo V. Klymenko, Thong Hoang, Hoa Nguyen, Samuel A. Wilkinson, Bahar Goldozian, Xing Zhenchang, Qinghua Lu, Muhammad Usman, Liming Zhu,
• Abstract summary: We present the architectural design and prototype implementation of QUT (Quantum Unit Testing), a framework for unit testing of quantum subroutines.<n>The framework is developed with a focus on usability and simplicity, making the complex theoretical concepts behind quantum unit testing accessible to a wide range of users.
• Score: 9.792920473518146
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We present the architectural design and prototype implementation of QUT (Quantum Unit Testing), a framework for unit testing of quantum subroutines. The framework is developed with a focus on usability and simplicity, making the complex theoretical concepts behind quantum unit testing accessible to a wide range of users with diverse backgrounds. This is achieved through the implementation of polymorphic probabilistic assertions, whose evaluation methods adapt to the data types of the arguments used in assertion statements, which may vary according to the context-dependent semantics of quantum subroutines. These arguments can be represented as qubit measurement outcomes, density matrices, or Choi matrices. For each type, the architecture integrates a specific testing protocol - such as quantum process tomography, quantum state tomography, or Pearson's chi-squared test - while remaining flexible enough to incorporate additional protocols in the future. The framework is built on the Qiskit software stack, providing compatibility with a broad range of quantum hardware backends and simulation platforms. Drawing on the reasoning provided by the denotational semantics of quantum subroutines, this work also highlights the key distinctions between quantum unit testing and its classical counterpart.

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