Arxiv:1806.09958V3 [Physics.Ed-Ph] 1 Aug 2018 1
Understanding quantum physics through simple experiments: from wave-particle duality to Bell's theorem Ish Dhand,1 Adam D'Souza,2 Varun Narasimhachar,3 Neil Sinclair,4, 5 Stephen Wein,4 Parisa Zarkeshian,4 Alireza Poostindouz,4, 6 and Christoph Simon4, ∗ 1Institut f¨urTheoretische Physik and Center for Integrated Quantum Science and Technology (IQST), Albert-Einstein-Allee 11, Universit¨atUlm, 89069 Ulm, Germany 2Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary T2N4N1, Alberta, Canada 3School of Physical & Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link Singapore 637371 4Department of Physics and Astronomy and Institute for Quantum Science and Technology (IQST), University of Calgary, Calgary T2N1N4, Alberta, Canada 5Department of Physics, Mathematics, and Astronomy and Alliance for Quantum Technologies (AQT), California Institute of Technology, 1200 East California Blvd., Pasadena, California 91125, USA 6Department of Computer Science, University of Calgary, Calgary T2N1N4, Alberta, Canada (Dated: August 3, 2018) Quantum physics, which describes the strange behavior of light and matter at the smallest scales, is one of the most successful descriptions of reality, yet it is notoriously inaccessible. Here we provide an approachable explanation of quantum physics using simple thought experiments. We derive all relevant quantum predictions using minimal mathematics, without introducing the advanced calculations that are typically used to describe quantum physics. We focus on the two key surprises of quantum physics, namely wave{particle duality, a term that was introduced to capture the fact that single quantum particles in some respects behave like waves and in other respects like particles, and entanglement, which applies to two or more quantum particles and brings out the inherent contradiction between quantum physics and seemingly obvious assumptions regarding the nature of reality.
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