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Recently, Majorana fermions (MFs) have attracted intensive attention because of their possible non-Abelian statistics. This paper points out an approach to verify the non-Abelian statistics of MFs in topological superconductors. We…

强关联电子 · 物理学 2015-06-05 Qiu-Bo Cheng , Jing He , Su-Peng Kou

We numerically investigate non-Abelian braiding dynamics of vortices in two-dimensional topological superconductors, such as $s$-wave superconductors with Rashba spin-orbit coupling. Majorana zero modes (MZMs) hosted by the vortices…

超导电性 · 物理学 2021-02-16 Takumi Sanno , Shunsuke Miyazaki , Takeshi Mizushima , Satoshi Fujimoto

In recent years there has been an intensive search for Majorana fermion states in condensed matter systems. Predicted to be localized on cores of vortices in certain non-conventional superconductors, their presence is known to render the…

超导电性 · 物理学 2012-10-30 Eytan Grosfeld , Ady Stern

Non-Abelian toplogical superconductors are characterized by the existence of {zero-energy} Majorana fermions bound in the quantized vortices. This is a consequence of the nontrivial bulk topology characterized by an {\em odd} Chern number.…

强关联电子 · 物理学 2013-01-14 Jian-Hua Jiang , Si Wu

The list of quantum mechanical systems with non-Abelian statistics has recently been expanded by including generic spin-orbit-coupled semiconductors e.g., InAs) in proximity to a s-wave superconductor. Demonstration of the anyonic…

强关联电子 · 物理学 2011-08-24 Jay D. Sau , Sumanta Tewari , S. Das Sarma

We study the Majorana fermions (MFs) in a spin ladder model. We propose and numerically show that the MFs qubit state can be read out by measuring the fusion excitation in the quenched inhomogeneous spin ladders. Moreover, we construct an…

介观与纳米尺度物理 · 物理学 2013-11-20 Yin-Chen He , Yan Chen

It has been argued that fluctuations of fermion parity are harmful for the demonstration of non-Abelian anyonic statistics. Here, we demonstrate a striking exception in which such fluctuations are actively used. We present a theory of…

介观与纳米尺度物理 · 物理学 2020-11-09 Sunghun Park , H. -S. Sim , Patrik Recher

In condensed matter physics, non-Abelian statistics for Majorana zero modes (or Majorana Fermions) is very important, really exotic, and completely robust. The race for searching Majorana zero modes and verifying the corresponding…

介观与纳米尺度物理 · 物理学 2021-12-22 Xiao-Ming Zhao , Cui-Xian Guo , Meng-Lei Yang , Heng-Wang , Wu-Ming Liu , Su-Peng Kou

A vortex in a model spinless px+ipy superconductor induces two Majorana fermions (MFs), one in the core and the other at the sample edge. In the present work, we show that edge MF can be generated, fused, transported, and braided easily by…

超导电性 · 物理学 2011-12-30 Qi-Feng Liang , Zhi Wang , Xiao Hu

By solving the Bogoliubov--De Gennes equations analytically, we derive the fermionic zero-modes satisfying the Majorana property that exist in vortices of a two-dimensional $s$-wave Fermi superfluid with spin-orbit coupling and Zeeman…

量子气体 · 物理学 2019-11-19 L. A. Toikka

Symmetry-protected topological superconductors (TSCs) can host multiple Majorana zero modes (MZMs) at their edges or vortex cores, while whether the Majorana braiding in such systems is non-Abelian in general remains an open question. Here…

介观与纳米尺度物理 · 物理学 2022-01-06 Jian-Song Hong , Ting-Fung Jeffrey Poon , Long Zhang , Xiong-Jun Liu

The non-Abelian topological order for superconductors is characterized by the existence of zero-energy Majorana fermions in edges of systems and in a vortex of a macroscopic condensate, which obey the non-Abelian statistics. This paper is…

超导电性 · 物理学 2010-12-13 Masatoshi Sato , Yoshiro Takahashi , Satoshi Fujimoto

Demonstrating the non-Abelian Ising anyon statistics of Majorana zero modes in a physical platform still represents a major open challenge in physics. We here show that the linear low-frequency charge conductance of a Majorana…

强关联电子 · 物理学 2024-10-07 Andrea Nava , Reinhold Egger , Fabian Hassler , Domenico Giuliano

We propose a scheme in semiconducting quantum nanowires structure to demonstrate the non-Abelian statistics for Majorana fermions in terms of braid group. The Majorana fermions are localized at the endpoints of semiconducting wires, which…

介观与纳米尺度物理 · 物理学 2011-11-01 Zheng-Yuan Xue

We propose an approach for probing Majorana bound states (MBSs) in a nanowire via counting statistics of a nearby charge detector in the form of a single-electron transistor (SET). We consider the impacts on the counting statistics by both…

介观与纳米尺度物理 · 物理学 2015-06-23 Zeng-Zhao Li , Chi-Hang Lam , J. Q. You

A hallmark of topological superconductivity is the non-Abelian statistics of Majorana bound states (MBS), its chargeless zero-energy emergent quasiparticles. The resulting fractionalization of a single electron, stored nonlocally as a two…

介观与纳米尺度物理 · 物理学 2022-04-26 Tong Zhou , Matthieu C. Dartiailh , Kasra Sardashti , Jong E. Han , Alex Matos-Abiague , Javad Shabani , Igor Zutic

The study of non-Abelian Majorana zero modes advances our understanding of the fundamental physics in quantum matter, and pushes the potential applications of such exotic states to topological quantum computation. It has been shown that in…

介观与纳米尺度物理 · 物理学 2014-05-02 Xiong-Jun Liu , Chris L. M. Wong , K. T. Law

We investigate a heterostructure system with a spin-orbit coupled semiconductor sandwiched by an s-wave superconductor and a ferromagnetic insulator, which supports Majorana fermions (MFs) at the superconducting vortex cores. We propose a…

介观与纳米尺度物理 · 物理学 2013-02-19 Long-Hua Wu , Qi-Feng Liang , Zhi Wang , Xiao Hu

The search for Majorana bound state (MBS) has recently emerged as one of the most active research areas in condensed matter physics, fueled by the prospect of using its non-Abelian statistics for robust quantum computation. A highly…

We propose an experiment to directly probe the non-Abelian statistics of Majorana fermions by braiding them in an s-wave superfluid of ultracold atoms. We show different orders of braiding operations give orthogonal output states that can…

量子气体 · 物理学 2011-03-23 Shi-Liang Zhu , L. B. Shao , Z. D. Wang , Lu-Ming Duan
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