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Topological superconductors can host Majorana quasiparticles which supersede the fermion/boson dichotomy and offer a pathway to fault tolerant quantum computation. In one-dimensional systems zero-energy Majorana states are bound to the ends…

We numerically compute the low-energy spectrum of a gate-controlled superconducting topological nanowire segmented into two islands, each Josephson-coupled to a bulk superconductor. This device may host two pairs of Majorana bound states…

介观与纳米尺度物理 · 物理学 2017-10-18 Michael Hell , Jeroen Danon , Karsten Flensberg , Martin Leijnse

For the search of Majorana fermions, we propose to employ a ramp-type Josephson edge junction between a normal metal such as Au, Ag or alloys of heavy metals and a topologically-trivial dx2-y2 wave high-Tc superconductor YBa2Cu3O7. The…

超导电性 · 物理学 2013-06-24 Chang C. Tsuei

A phase from an adiabatic exchange of Majorana bound states (MBS) reveals their exotic anyonic nature. For detecting this exchange phase, we propose an experimental setup consisting of a Corbino-geometry Josephson junction on the surface of…

介观与纳米尺度物理 · 物理学 2015-12-17 Sunghun Park , Patrik Recher

We discuss the properties of topologically nontrivial superconducting phases and the conditions for their realization in condensed matter, and the principles for identifying Majorana bound states (MBSs). Along with the well-known Kitaev…

介观与纳米尺度物理 · 物理学 2022-05-23 V. V. Val'kov , M. S. Shustin , S. V. Aksenov , A. O. Zlotnikov , A. D. Fedoseev , V. A. Mitskan , M. Yu. Kagan

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

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

A versatile control of magnetic systems, widely used to store information, can also enable manipulating Majorana bounds states (MBS) and implementing fault-tolerant quantum information processing. The proposed platform relies on the…

介观与纳米尺度物理 · 物理学 2017-06-23 Alex Matos-Abiague , Javad Shabani , Andrew D. Kent , Geoffrey L. Fatin , Benedikt Scharf , Igor Žutić

Recent experimental efforts towards the detection of Majorana bound states have focused on creating the conditions for topological superconductivity. Here we demonstrate an alternative route, which achieves fully localised zero-energy…

介观与纳米尺度物理 · 物理学 2016-03-07 Pablo San-Jose , Jorge Cayao , Elsa Prada , Ramón Aguado

Majorana fermions hold promise for quantum computation, because their non-Abelian braiding statistics allows for topologically protected operations on quantum information. Topological qubits can be constructed from pairs of well-separated…

量子物理 · 物理学 2013-07-31 T. Hyart , B. van Heck , I. C. Fulga , M. Burrello , A. R. Akhmerov , C. W. J. Beenakker

In this Tutorial, we give a pedagogical introduction to Majorana bound states (MBSs) arising in semiconducting nanostructures. We start by briefly reviewing the well-known Kitaev chain toy model in order to introduce some of the basic…

介观与纳米尺度物理 · 物理学 2021-09-08 Katharina Laubscher , Jelena Klinovaja

Known Majorana fermions models are considered as promising ones for the purposes of quantum computing robust to decoherence. One of the most expecting but unachieved goals is an effective control for braiding of Majoranas. Another one is to…

介观与纳米尺度物理 · 物理学 2017-12-15 Halina V. Grushevskaya , George Krylov

In the presence of an applied magnetic field introducing Zeeman spin splitting, a superconducting (SC) proximitized one-dimensional (1D) nanowire with spin-orbit coupling can pass through a topological quantum phase transition developing…

介观与纳米尺度物理 · 物理学 2017-08-07 Ching-Kai Chiu , Jay D. Sau , S. Das Sarma

We propose the platform of a Yang-Lee anyon system which is constructed from Majorana bound states in topological superconductors. Yang-Lee anyons, described by the non-unitary conformal field theory with the central charge $c=-22/5$, are…

强关联电子 · 物理学 2022-12-06 Takumi Sanno , Masahiko G. Yamada , Takeshi Mizushima , Satoshi Fujimoto

Majorana bound states (MBSs) are building blocks for topological quantum computing. They can be generated via the combination of electronic topology and superconductivity. To achieve logic operations via Majorana braiding, positional…

We demonstrate how to design various nonstandard types of Andreev-bound-state (ABS) dispersions, via a composite construction relying on Majorana bound states (MBSs). Here, the MBSs appear at the interface of a Josephson junction consisting…

超导电性 · 物理学 2019-09-23 Panagiotis Kotetes , Maria Teresa Mercaldo , Mario Cuoco

Second-order topological superconductors (SOTSs) host localized Majorana fermions and provide a new platform for topological quantum computation. We propose a remarkable and feasible way to realize networks based on SOTSs which allow to…

超导电性 · 物理学 2020-09-16 Song-Bo Zhang , Alessio Calzona , Björn Trauzettel

Reading out Majorana bound states (MBSs) is essential both to verify their non-Abelian property and to realize topological quantum computation. Here, we construct a protocol to measure the parity of two MBSs in a Majorana island coupled to…

介观与纳米尺度物理 · 物理学 2021-09-14 Zhen-Tao Zhang , Dong E. Liu

The recent progress of the Majorana experiments paves a way for the future tests of non-abelian braiding statistics and topologically-protected quantum information processing. However, a deficient design in those tests could be very…

量子物理 · 物理学 2023-09-29 Peng Qian , Dong E. Liu

We investigate transport properties through a crossbar-shaped structure formed by a quantum dot (QD) coupled to two normal leads and embedded between two one-dimensional topological superconductors (TSCs). Each TSC hosts Majorana bound…

介观与纳米尺度物理 · 物理学 2019-05-23 J. P. Ramos-Andrade , D. Zambrano , P. A. Orellana