Light-shift-induced behaviors observed in momentum-space quantum walks

• Verfasst von: Bolik, Nikolai [VerfasserIn]
• Verfasst von: Groiseau, Caspar [VerfasserIn]
• Verfasst von: Clark, Jerry H. [VerfasserIn]
• Verfasst von: Gresch, Alexander [VerfasserIn]
• Verfasst von: Dadras, Siamak [VerfasserIn]
• Verfasst von: Summy, Gil S. [VerfasserIn]
• Verfasst von: Liu, Yingmei [VerfasserIn]
• Verfasst von: Wimberger, Sandro [VerfasserIn]
• Titel: Light-shift-induced behaviors observed in momentum-space quantum walks
• Verf.angabe: Nikolai Bolik, Caspar Groiseau, Jerry H. Clark, Alexander Gresch, Siamak Dadras, Gil S. Summy, Yingmei Liu, and Sandro Wimberger
• E-Jahr: 2022
• Jahr: 7 September 2022
• Umfang: 8 S.
• Fussnoten: Gesehen am 03.01.2023
• Titel Quelle: Enthalten in: Physical review
• Ort Quelle: Woodbury, NY : Inst., 2016
• Jahr Quelle: 2022
• Band/Heft Quelle: 106(2022), 3, Artikel-ID 033307, Seite 1-8
• ISSN Quelle: 2469-9934
• DOI: doi:10.1103/PhysRevA.106.033307
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 183024132X

Abstract

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.