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題名 Disorder-induced topology in quench dynamics
作者 許琇娟
Hsu, Hsiu-Chuan
Chiu,  Pok-Man
Chang,  Po-Yao
貢獻者 應物所
日期 2021-09
上傳時間 10-Feb-2022 14:56:52 (UTC+8)
摘要 We study the effect of strong disorder on topology and entanglement in quench dynamics. Although disorder-induced topological phases have been well studied in equilibrium, the disorder-induced topology in quench dynamics has not been explored. In this paper, we predict a disorder-induced topology of postquench states characterized by the quantized dynamical Chern number and the crossings in the entanglement spectrum in (1+1) dimensions. The dynamical Chern number undergoes transitions from zero to unity and back to zero when increasing the disorder strength. The boundaries between different dynamical Chern numbers are determined by delocalized critical points in the postquench Hamiltonian with the strong disorder. An experimental realization in quantum walks is discussed.
關聯 Phys. Rev. Research, 3(3), 033242
資料類型 article
DOI https://doi.org/10.1103/PhysRevResearch.3.033242
dc.contributor 應物所
dc.creator (作者) 許琇娟
dc.creator (作者) Hsu, Hsiu-Chuan
dc.creator (作者) Chiu,  Pok-Man
dc.creator (作者) Chang,  Po-Yao
dc.date (日期) 2021-09
dc.date.accessioned 10-Feb-2022 14:56:52 (UTC+8)-
dc.date.available 10-Feb-2022 14:56:52 (UTC+8)-
dc.date.issued (上傳時間) 10-Feb-2022 14:56:52 (UTC+8)-
dc.identifier.uri (URI) http://nccur.lib.nccu.edu.tw/handle/140.119/139036-
dc.description.abstract (摘要) We study the effect of strong disorder on topology and entanglement in quench dynamics. Although disorder-induced topological phases have been well studied in equilibrium, the disorder-induced topology in quench dynamics has not been explored. In this paper, we predict a disorder-induced topology of postquench states characterized by the quantized dynamical Chern number and the crossings in the entanglement spectrum in (1+1) dimensions. The dynamical Chern number undergoes transitions from zero to unity and back to zero when increasing the disorder strength. The boundaries between different dynamical Chern numbers are determined by delocalized critical points in the postquench Hamiltonian with the strong disorder. An experimental realization in quantum walks is discussed.
dc.format.extent 1858308 bytes-
dc.format.mimetype application/pdf-
dc.relation (關聯) Phys. Rev. Research, 3(3), 033242
dc.title (題名) Disorder-induced topology in quench dynamics
dc.type (資料類型) article
dc.identifier.doi (DOI) 10.1103/PhysRevResearch.3.033242
dc.doi.uri (DOI) https://doi.org/10.1103/PhysRevResearch.3.033242