Investigating the Influence of Visualization on Student Understanding of Quantum Superposition

TL;DR

This study examines how different visual representations in quantum simulations influence student understanding of superposition, leading to improved visualizations that reduce misconceptions in introductory quantum physics education.

Contribution

The paper introduces refined visualizations for quantum superposition in simulations, demonstrating their effectiveness in decreasing student misconceptions.

Findings

Revised visualizations reduced misconceptions about photon splitting.

In-class trials showed improved student understanding with new visuals.

Visual improvements led to more accurate mental models of quantum phenomena.

Abstract

Visualizations in interactive computer simulations are a powerful tool to help students develop productive mental models, particularly in the case of quantum phenomena that have no classical analogue. The QuVis Quantum Mechanics Visualization Project develops research-based interactive simulations for the learning and teaching of quantum mechanics. We describe efforts to refine the visual representation of a single-photon superposition state in the QuVis simulations. We developed various depictions of a photon incident on a beam splitter, and investigated their influence on student thinking through individual interviews. Outcomes from this study led to the incorporation of a revised visualization in all QuVis single-photon simulations. In-class trials in 2013 and 2014 using the Interferometer Experiments simulation in an introductory quantum physics course were used for a comparative study of the initial and revised visualizations. The class that used the revised visualization showed a lower frequency of incorrect ideas about quantum superposition, such as the photon splitting into two half-energy components.