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Robust zero bias transport anomalies in semiconducting nanowires with proximity-induced superconductivity have been convincingly demonstrated in various experiments. While these are compatible with the existence of Majorana zero modes at…

介观与纳米尺度物理 · 物理学 2017-08-15 Elsa Prada , Ramón Aguado , Pablo San-Jose

Spatial separation of Majorana zero modes distinguishes trivial from topological midgap states and is key to topological protection in quantum computing applications. Although signatures of Majorana zero modes in tunneling spectroscopy have…

介观与纳米尺度物理 · 物理学 2020-04-28 M. T. Deng , S. Vaitiekénas , E. Prada , P. San-Jose , J. Nygård , P. Krogstrup , R. Aguado , C. M. Marcus

We consider an experimentally feasible setup to demonstrate the existence and coherent dynamics of Majorana fermion. The transport setup consists of a quantum dot and a tunnel-coupled semiconductor nanowire which is anticipated to generate…

介观与纳米尺度物理 · 物理学 2013-12-16 Yunshan Cao , Peiyue Wang , Gang Xiong , Xin-Qi Li

We theoretically study quantum transport through a quantum dot coupled to Majorana bound states confined at the ends of a topological superconducting nanowire. The topological superconductor forms a loop and is threaded by a tunable…

介观与纳米尺度物理 · 物理学 2022-04-25 Levente Máthé , Doru Sticlet , Liviu P. Zârbo

We study the low-energy transport properties of a hybrid device composed by a native quantum dot coupled to both ends of a topological superconducting nanowire section hosting Majorana zero-modes. The account of the coupling between the dot…

介观与纳米尺度物理 · 物理学 2020-10-14 L. S. Ricco , Y. Marques , J. E. Sanches , I. A. Shelykh , A. C. Seridonio

We theoretically investigate electronic transport through a junction where a quantum dot (QD) is tunnel coupled on both sides to semiconductor nanowires with strong spin-orbit interaction and proximity-induced superconductivity. The results…

超导电性 · 物理学 2014-12-09 Guang-Yao Huang , Martin Leijnse , Karsten Flensberg , Hongqi Xu

We examine the transport properties of a double quantum dot system coupled to a topological superconducting nanowire hosting Majorana quasiparticles at its ends, with the central quantum dot attached to the left and right leads. We focus on…

介观与纳米尺度物理 · 物理学 2022-02-21 Piotr Majek , Ireneusz Weymann

Majorana Zero Modes (MZMs) are prime candidates for robust topological quantum bits, holding a great promise for quantum computing. Semiconducting nanowires with strong spin orbit coupling offers a promising platform to harness…

We investigate the spectral and transport properties of a double quantum dot laterally attached to a topological superconducting nanowire, hosting the Majorana zero-energy modes. Specifically, we consider a geometry, in which the outer…

介观与纳米尺度物理 · 物理学 2022-02-21 Piotr Majek , Grzegorz Górski , Tadeusz Domański , Ireneusz Weymann

Spin-orbit coupled semiconducting nanowires with proximity-induced superconductivity are expected to host Majorana zero modes at their endpoints when a sufficiently strong magnetic field is applied. The resulting phase would be a…

介观与纳米尺度物理 · 物理学 2017-11-22 David J. Clarke

We investigate electron transport inside a ring system composed of a quantum dot (QD) coupled to two Majorana bound states confined at the ends of a one-dimensional topological superconductor nanowire. By tuning the magnetic flux threading…

介观与纳米尺度物理 · 物理学 2020-12-16 Qi-Bo Zeng , Shu Chen , L. You , Rong Lv

To confirm the Majorana signatures, significant effort has been devoted to distinguishing between Majorana zero modes (MZMs) and spatially separated quasi-Majorana modes (QMMs). Because both MZMs and QMMs cause a quantized zero-bias peak in…

介观与纳米尺度物理 · 物理学 2021-12-22 Donghao Liu , Zhan Cao , Xin Liu , Hao Zhang , Dong E. Liu

Motivated by recent experiments we consider transport across an interacting magnetic impurity coupled to the Majorana zero mode (MZM) observed at the boundary of a topological superconductor (SC). In the presence of a finite tunneling…

介观与纳米尺度物理 · 物理学 2022-03-11 Daniele Guerci , Andrea Nava

Conductance at zero source-drain voltage bias in InSb nanowire/NbTiN superconductor devices exhibits peaks that are close to a quantized value of $2e^2/h$. The nearly quantized resonances evolve in the tunnel barrier strength, magnetic…

介观与纳米尺度物理 · 物理学 2021-04-28 P. Yu , J. Chen , M. Gomanko , G. Badawy , E. P. A. M. Bakkers , K. Zuo , V. Mourik , S. M. Frolov

A tunneling junction between normal electrode and a topological superconducting wire, mediated by a quantum dot, is considered theoretically. We show that the presence of the dot in the junction can be advantageous to Majorana zero modes…

介观与纳米尺度物理 · 物理学 2023-09-06 Piotr Stefański

Manipulation of decoupled Majorana zero modes (MZMs) could enable topologically-protected quantum computing. However, the practical realization of a large number of perfectly decoupled MZMs needed to perform nontrivial quantum computation…

介观与纳米尺度物理 · 物理学 2024-02-20 D. B. Karki , K. A. Matveev , Ivar Martin

We present a theoretical analysis of low-energy quantum transport in coupled Majorana box devices. A single Majorana box represents a Coulomb-blockaded mesoscopic superconductor proximitizing two or more long topological nanowires. The box…

介观与纳米尺度物理 · 物理学 2018-05-18 Matthias Gau , Stephan Plugge , Reinhold Egger

We study a disordered superconducting nanowire, with broken time-reversal and spin-rotational symmetry, which can be driven into a topological phase with end Majorana bound states by an externally applied magnetic field. As a function of…

介观与纳米尺度物理 · 物理学 2013-11-22 Benjamin M. Fregoso , Alejandro M. Lobos , S. Das Sarma

Majorana zero modes (MZMs) emerge as edge states in topological superconductors and are promising for topological quantum computation, but their detection has so far been elusive. Here we show that non-Hermiticity can be used to obtain…

超导电性 · 物理学 2023-08-25 R. Arouca , Jorge Cayao , Annica M. Black-Schaffer

We consider the correlated parallel transport through two quantum dots which are tunnel-coupled to the ends of a semiconductor nanowire where the Majorana bound states (MBSs) may emerge under proper conditions. In terms of the…

介观与纳米尺度物理 · 物理学 2013-12-16 Peiyue Wang , Yunshan Cao , Ming Gong , Gang Xiong , Xin-Qi Li
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