Topological states of matter induced by spatially-modulated fields

空间调制场引起的物质拓扑态

• 批准号: 20K14375
• 负责人: Marra Pasquale
• 金额: $ 2.25万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Early-Career Scientists
• 财政年份: 2020
• 资助国家: 日本
• 起止时间: 2020-04-01 至 2024-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-20K14375/
• 关键词: トポロジカル量子現象; トポロジカル超伝導; 準周期性; 物質中のマヨラナ粒子; 超対称性; ナノワイヤ; 光格子中の冷却原子気体; Thoulessポンプ; topological states; quasiperiodic structures; majorana fermions; superconductors; ultracold atomic gases

In this last fiscal year, my research resulted in 3 publications, one accepted paper, 6 oral contributions to conferences, and 4 invited seminars in research institutions. Scientifically, the main achievements were:We demonstrated the possibility to braid Majorana modes via spatially-modulated fields, employing Majorana modes localized in discrete 1D arrays.We proposed a novel way to manipulate Majorana modes in 2D superconductors via inhomogeneous superconducting order.We developed a novel framework to describe nontrivial Majorana modes and other kinds of trivial modes in 1D superconductors.I wrote an extended review on Majorana modes in topological superconductors, which summarizes the main achievements in the field and will hopefully serve as inspiration for future research.

在上一财年，我的研究成果包括 3 篇出版物、一篇被接受的论文、6 次会议口头贡献以及 4 次研究机构特邀研讨会。在科学上，主要成就是：我们证明了通过空间调制场编织马约拉纳模式的可能性，采用离散一维阵列中局域的马约拉纳模式。我们提出了一种通过不均匀超导顺序操纵二维超导体中马约拉纳模式的新方法。我们开发了一种描述一维超导体中非平凡马约拉纳模式和其他类型的平凡模式的新颖框架。我写了一篇关于拓扑超导体中马约拉纳模式的扩展评论，其中总结了该领域的主要成就，有望为未来的研究提供启发。

项目成果

Topologically quantized current in quasiperiodic Thouless pumps

• DOI: 10.1103/physrevresearch.2.042035
• 发表时间: 2020-01
• 期刊: Physical Review Research
• 影响因子: 4.2
• 作者: P. Marra;M. Nitta

Topologically nontrivial Andreev bound states, 1D Majorana fermions, and supersymmetry in quantum wires

拓扑非平凡的安德烈夫束缚态、一维马约拉纳费米子和量子线中的超对称性

• 发表时间: 2021
• 作者: Pasquale Marra;Daisuke Inotani;Muneto Nitta
• 通讯作者: Muneto Nitta

Majorana/Andreev crossover and the fate of the topological phase transition in inhomogeneous nanowires

• DOI: 10.1088/1361-648x/ac44d2
• 发表时间: 2021-12
• 期刊: Journal of Physics: Condensed Matter
• 作者: P. Marra;A. Nigro

Partial supersymmetry breaking and Majorana modes in quantum nanowires,

量子纳米线中的部分超对称破缺和马约拉纳模式，

• 发表时间: 2022
• 作者: Pasquale Marra

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