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We theoretically study topological superconductivity in elongated planar Josephson junctions. In the presence of spin-orbit coupling and an in-plane magnetic field, the Josephson junction can enter the topological phase and host zero-energy…

介观与纳米尺度物理 · 物理学 2025-02-17 D. Kuiri , P. Wójcik , M. P. Nowak

The creation of topological quantum gates using Majorana zero modes -- an outstanding problem in the field of topological quantum computing -- relies on our ability to control the braiding process of these particles in time and space. Here,…

介观与纳米尺度物理 · 物理学 2023-02-13 Jasmin Bedow , Eric Mascot , Themba Hodge , Stephan Rachel , Dirk K. Morr

We introduce two-dimensional topological insulators in proximity to high-temperature cuprate or iron-based superconductors as high-temperature platforms of Majorana Kramers pairs of zero modes. The proximity-induced pairing at the helical…

介观与纳米尺度物理 · 物理学 2018-09-03 Zhongbo Yan , Fei Song , Zhong Wang

Recently, electron transport along chiral molecules has been attracting extensive interest and several intriguing phenomena have been reported in recent experiments, such as the emergence of zero-bias conductance peaks upon the adsorption…

介观与纳米尺度物理 · 物理学 2023-10-18 Xiao-Feng Chen , Wenchen Luo , Tie-Feng Fang , Yossi Paltiel , Oded Millo , Ai-Min Guo , Qing-Feng Sun

Two-dimensional second-order topological superconductors (SOTSCs) have gapped bulk and edge states, with zero-energy Majorana bound states localized at corners. Motivated by recent advances in Majorana nanowire experiments, we propose to…

介观与纳米尺度物理 · 物理学 2019-09-25 S. Franca , D. V. Efremov , I. C. Fulga

We introduce a scheme for preparation, manipulation, and readout of Majorana zero modes in semiconducting wires with mesoscopic superconducting islands. Our approach synthesizes recent advances in materials growth with tools commonly used…

Majorana zero modes have gained significant interest due to their potential applications in topological quantum computing and in the realization of exotic quantum phases. These zero-energy quasiparticle excitations localize at the vortex…

介观与纳米尺度物理 · 物理学 2024-08-13 Pasquale Marra , Daisuke Inotani , Takeshi Mizushima , Muneto Nitta

Majorana zero modes (MZMs) are non-Abelian quasiparticles with the potential to serve as topological qubits for fault-tolerant quantum computing due to their ability to encode quantum information nonlocally. In multi-Majorana systems…

量子物理 · 物理学 2025-06-23 Bai-Ting Liu , Peng Qian , Zhan Cao , Dong E. Liu

We investigate the topological phases in a coupled one-dimensional p-wave superconducting Fibonacci quasicrystal modeled by the quasiperiodic Kitaev chain. Recent studies have shown that the coupled system can host topological edge modes…

超导电性 · 物理学 2026-05-07 Koki Mizuno

The engineering of Majorana zero modes in topological superconductors, a new paradigm for the realization of topological quantum computing and topology-based devices, has been hampered by the absence of materials with sufficiently large…

超导电性 · 物理学 2023-01-18 Eric Mascot , Sagen Cocklin , Martin Graham , Mahdi Mashkoori , Stephan Rachel , Dirk K. Morr

We show that a one-dimensional topological superconductor can be realized in carbon nanotubes, using a relatively small magnetic field. Our analysis relies on the intrinsic curvature-enhanced spin-orbit coupling of the nanotubes, as well as…

介观与纳米尺度物理 · 物理学 2020-07-01 Omri Lesser , Gal Shavit , Yuval Oreg

In search of fault-tolerant topological quantum computation (TQC), zero-bias conductance peak as a necessary signature of Majorana zero modes (MZMs) has been observed in a number of solid-state systems. Here, we present the signature of…

介观与纳米尺度物理 · 物理学 2019-11-13 Guang Yang , Zhaozheng Lyu , Junhua Wang , Jianghua Ying , Xiang Zhang , Jie Shen , Guangtong Liu , Jie Fan , Zhongqing Ji , Xiunian Jing , Fanming Qu , Li Lu

Demonstration of Majorana non-Abelian properties is a major challenge in the field of topological superconductivity. In this work, we propose a minimal device and protocol for testing non-Abelian properties using charge-transfer operations…

介观与纳米尺度物理 · 物理学 2022-02-02 Svend Krøjer , Rubén Seoane Souto , Karsten Flensberg

We introduce a one-dimensional non-Hermitian Kitaev chain with staggered imbalance in the $p$-wave superconducting pairing. By tuning the chemical potential and the pairing imbalance, we find that the eigenenergy spectrum undergoes…

介观与纳米尺度物理 · 物理学 2026-05-19 Xiao-Jue Zhang , Rong Lü , Qi-Bo Zeng

Majorana zero modes are usually attributed to topological superconductors. We study a class of two-dimensional topologically trivial superconductors without chiral edge modes, which nevertheless host robust Majorana zero modes in…

超导电性 · 物理学 2017-04-07 Zhongbo Yan , Ren Bi , Zhong Wang

We show that a one dimensional ultra-cold Fermi gas with Rashba-like spin orbit coupling, a Zeeman field and intrinsic attractive interactions exhibits a novel topological superfluid state, which forms in spite of total number conservation…

量子气体 · 物理学 2015-04-09 Jonathan Ruhman , Ehud Altman

A counting formula for computing the number of (Majorana) zero modes bound to topological point defects is evaluated in a gradient expansion for systems with charge-conjugation symmetry. This semi-classical counting of zero modes is applied…

超导电性 · 物理学 2015-03-17 Luiz Santos , Yusuke Nishida , Claudio Chamon , Christopher Mudry

A recent experiment [Nadj-Perge et al., Science 346, 602 (2014)] provides evidence for Majorana zero modes in iron (Fe) chains on the superconducting Pb(110) surface. Here, we study this system by scanning tunneling microscopy using…

介观与纳米尺度物理 · 物理学 2015-11-09 Michael Ruby , Falko Pientka , Yang Peng , Felix von Oppen , Benjamin W. Heinrich , Katharina J. Franke

Executing quantum algorithms using Majorana zero modes - a major milestone for the field of topological quantum computing - requires a platform that can be scaled to large quantum registers, can be controlled in real time and space, and a…

介观与纳米尺度物理 · 物理学 2025-03-17 Jasmin Bedow , Dirk K. Morr

Majorana modes, typically arising at the edges of one-dimensional topological superconductors, are considered to be a promising candidate for encoding nonlocal qubits in fault-tolerant quantum computation. Here we propose to exploit the…

量子物理 · 物理学 2020-02-11 Raditya Weda Bomantara , Jiangbin Gong