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Observation of the topological Anderson insulator in disordered atomic wires

Science (American Association for the Advancement of Science), 2018-11, Vol.362 (6417), p.929-933 [Tạp chí có phản biện]

Copyright © 2018 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. ;Copyright © 2018 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works ;Attribution-NonCommercial-NoDerivs 3.0 Spain info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/3.0/es/ ;ISSN: 0036-8075 ;EISSN: 1095-9203 ;DOI: 10.1126/science.aat3406 ;PMID: 30309909

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Nhan đề:
Observation of the topological Anderson insulator in disordered atomic wires
Tác giả: Meier, Eric J ; An, Fangzhao Alex ; Dauphin, Alexandre ; Maffei, Maria ; Massignan, Pietro ; Hughes, Taylor L ; Gadway, Bryce
Chủ đề: Atomic interactions ; Band structure of solids ; Fluctuations ; Física ; Física de fluids ; Lattice sites ; Momentum ; Nanowires ; Phase transitions ; Quantum theory ; Quantum transport ; Quàntums, Teoria dels ; Rubidium ; Spectroscopy ; Stability ; Topology ; Wire ; Àrees temàtiques de la UPC
Là 1 phần của: Science (American Association for the Advancement of Science), 2018-11, Vol.362 (6417), p.929-933
Mô tả: Topology and disorder have a rich combined influence on quantum transport. To probe their interplay, we synthesized one-dimensional chiral symmetric wires with controllable disorder via spectroscopic Hamiltonian engineering, based on the laser-driven coupling of discrete momentum states of ultracold atoms. Measuring the bulk evolution of a topological indicator after a sudden quench, we observed the topological Anderson insulator phase, in which added disorder drives the band structure of a wire from topologically trivial to nontrivial. In addition, we observed the robustness of topologically nontrivial wires to weak disorder and measured the transition to a trivial phase in the presence of strong disorder. Atomic interactions in this quantum simulation platform may enable realizations of strongly interacting topological fluids.
Nơi xuất bản: United States: The American Association for the Advancement of Science
Ngôn ngữ: English
Số nhận dạng: ISSN: 0036-8075
EISSN: 1095-9203
DOI: 10.1126/science.aat3406
PMID: 30309909
Nguồn: Recercat

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Observation of the topological Anderson insulator in disordered atomic wires

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