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.

在上一个财政年度，我的研究成果有3篇出版物，1篇被接受的论文，6篇会议口头发言，4篇研究机构的邀请研讨会。在科学上，主要成果有：我们证明了通过空间调制场编织Majorana模的可能性，利用Majorana模局域在离散的一维阵列中;我们提出了一种新的方法来操纵Majorana模在二维超导体中通过非均匀超导秩序;我们发展了一个新的框架来描述非平凡的Majorana模和其他类型的平凡模在一维超导体中;我写了一个扩展的评论，总结了该领域的主要成就，希望能为未来的研究提供启发。

项目成果

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

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

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

Personal page (Japanese)

个人页面（日语）

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