2011/04/01 by Alois Regensburger, Christoph Bersch, Regensburger, Alois +13
Computer Science · Engineering · Physics and Astronomy · #FOS: Physical sciences #Optical Network Technologies #Quantum Information and Cryptography #Quantum Physics (quant-ph) #Quantum and electron transport phenomena #quant-ph
paper · pdf · doi:10.48550/arxiv.1104.0105
arxiv created 2011/04/01 · openalex publication_date 2011/04/01 · arxiv updated 2011/04/04 · openalex created_date 2022/08/31 · openalex updated_date 2026/07/28
We experimentally investigate a discrete time quantum walk in a system of coupled fiber loops and observe typical phenomena known from the wave propagation in periodic structures as ballistic spreading or an oscillation between two internal quantum states similar to Zitterbewegung (trembling motion). If a position-dependent phase gradient is applied we find localization and Bloch oscillations of the field for moderate as well as Landau-Zener tunneling for strong phase gradients.