A Tool For Debugging Quantum Circuits

TL;DR

This paper presents a quantum circuit debugging tool that allows slicing and managing quantum circuits for easier debugging and testing, addressing the unique challenges of quantum state measurement.

Contribution

It introduces a novel quantum circuit debugger that supports circuit slicing and management for simulation and execution, aiding quantum software development.

Findings

Improved debugging efficiency for quantum circuits.

Early user feedback indicates enhanced usability and time savings.

Supports both interactive debugging and automated testing.

Abstract

As the scale of quantum programs grows to match that of classical software, the nascent field of quantum software engineering must mature and tools such as debuggers will become increasingly important. However, developing a quantum debugger is challenging due to the nature of a quantum computer; sneaking a peek at the value of a quantum state will cause either partial or complete collapse of the superposition and may destroy the necessary entanglement. As a first step to developing a full quantum circuit debugger, we have designed and implemented a quantum circuit debugging tool. The tool allows the user to divide the circuit vertically or horizontally into smaller chunks known as slices, and manage their simulation or execution for either interactive debugging or automated testing. The tool also enables developers to track gates within the overall circuit and each chunk to understand their behavior better. Feedback on usefulness and usability from early users shows that using the tool to slice and test their circuits has helped make the debugging process more time-efficient for them.