Light-shift-induced behaviors observed in momentum-space quantum walks
Entity
UAM. Departamento de Física Teórica de la Materia CondensadaPublisher
American Physical SocietyDate
2022-09-07Citation
10.1103/PhysRevA.106.033307
Physical Review A 106.3 (2022): 033307
ISSN
2469-9926 (print); 2469-9934 (online)DOI
10.1103/PhysRevA.106.033307Editor's Version
https://doi.org/10.1103/PhysRevA.106.033307Subjects
Bose-Einstein Condensates; Coherent Dynamics; Condensate Systems; Light Shift; Momentum Distributions; Quantum Walk; Spinor Condensates; Spinors; FísicaRights
© 2022 American Physical SocietyAbstract
Over the last decade there have been many advances in studies of quantum walks (QWs) including a momentum-space QW recently realized in our spinor Bose-Einstein condensate system. This QW possessed behaviors that generally agreed with theoretical predictions; however, it also showed momentum distributions that were not adequately explained by the theory. We present a theoretical model which proves that the coherent dynamics of the spinor condensate is sufficient to explain the experimental data without invoking the presence of a thermal cloud of atoms as in the original theory. Our numerical findings are supported by an analytical prediction for the momentum distributions in the limit of zero-temperature condensates. This current model provides more complete explanations to the momentum-space QWs that can be applied to study quantum search algorithms and topological phases in Floquet-driven systems
Files in this item
Google Scholar:Bolik, Nikolai
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Groiseau, Caspar Wilhelm
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Clark, Jerry H.
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Gresch, Alexander
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Dadras, Siamak
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Summy, Gil S.
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Liu, Yingmei
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Wimberger, Sandro
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