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Discrete-Event Simulation of Quantum Walks

Willsch, M., Willsch, D., Michielsen, K. & De Raedt, H., 7-May-2020, In : Frontiers of Physics. 8, 10 p., 145.

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We use discrete-event simulation on a digital computer to study two different models of experimentally realizable quantum walks. The simulation models comply with Einstein locality, are as "realistic" as the one of the simple random walk in that the particles follow well-defined trajectories, are void of concepts, such as particle-wave duality and wave-function collapse, and reproduce the quantum-theoretical results by means of a cause-and-effect, event-by-event process. Our simulation model for the quantum walk experiment presented in Robens et al. [1] reproduces the result of that experiment. Therefore, the claim that the result of the experiment "rigorously excludes (i.e., falsifies) any explanation of quantum transport based on classical, well-defined trajectories" needs to be revised.

Original languageEnglish
Article number145
Number of pages10
JournalFrontiers of Physics
Volume8
Publication statusPublished - 7-May-2020

    Keywords

  • quantum walk, quantum theory, subquantum models, discrete event simulation (DES), computer simulation, FACT

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