Quantum Physics
[Submitted on 16 Apr 2022]
Title:Feynman Checkers with Absorption
View PDFAbstract:We give a new elementary proof of the theorem by Ambainis et al. that for a quantum walk, the probability amplitudes of absorption at the initial point after 4n steps are proportional to the Catalan numbers. We also calculate the absorption probabilities at points close to the initial one for the first time.
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