A classical to quantum transition via key experiments. (14th August 2020)

• Record Type: Journal Article
• Authors: Scholz, Ruediger; Wessnigk, Susanne; Weber, Kim-Alessandro
• Is Part Of: European journal of physics. Volume 41:Number 5(2020:Sep.)
• Publication Date: 2020-08-14
• Subjects: quantum physics -- quantum optics -- conceptual change -- knowledge in pieces -- Key Experiment -- single-photon experiment -- interferometry; Physics -- Periodicals; Physics -- Study and teaching (Higher) -- Europe -- Periodicals; 530
• DOI: 10.1088/1361-6404/ab8e52
• Languages: English
• ISSNs: 0143-0807

Abstract

Abstract: This paper presents an educational concept for promoting quantum teaching and learning via an educational structured quantum optical experiment. The experiment is designed to demonstrate the striking differences between classical physics and quantum physics, for example quantum interference of unbreakable photons (the ability of probabilities to interfere due to a phase sensitive superposition of states) and quantum nonlocality (there is no way to locate photonic states without a fundamental loss of information about the characteristics and a complete change of the state). For this proposal, we developed an experimental setup straightforward enough to be used in advanced physics courses even in secondary school student labs. To explain, or in a more quantum-semantic way, to interpret the experimental results quantitatively, we provide an appropriately rigorous quantum optical theory. Our model combines Laplace statistics (to access the statistical behaviour of photon counting) and basic vector calculus to calculate probabilities from the phase sensitivity of probability amplitudes. This article aims to contribute to further discussion and empirical research into novel teaching strategies for a more deeply conceptual approach to quantum theory.