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In this paper we present a hybrid scheme for topological quantum computation in a system of cold atoms trapped in an atomic lattice. A topological qubit subspace is defined using Majorana fermions which emerge in a network of atomic Kitaev…

量子物理 · 物理学 2014-02-19 C. Laflamme , M. A. Baranov , P. Zoller , C. V. Kraus

The nonlocal nature of the fermionic mode spanned by a pair of Majorana bound states in a one-dimensional topological superconductor has inspired many proposals aiming at demonstrating this property in transport. In particular, transport…

超导电性 · 物理学 2015-09-01 Jascha Ulrich , Fabian Hassler

Semiconducting nanowires with strong spin-orbit coupling in the presence of induced superconductivity and ferromagnetism can support Majorana zero modes. We study the pumping due to the precession of the magnetization in single-subband…

介观与纳米尺度物理 · 物理学 2023-07-04 V. Fernández Becerra , Mircea Trif , Timo Hyart

Coupling Majorana qubits with other qubits is an absolute essential in storing, manipulating and transferring informations for topological quantum computing. We theoretically propose a manner to coupling Majorana qubits with solitons,…

介观与纳米尺度物理 · 物理学 2015-06-22 Ye Xiong , Peiqing Tong

We investigate non-Abelian statistics of Majorana Kramers pairs (MKPs) in a network system of one-dimensional time-reversal invariant topological superconductors by using numerical simulations of braiding dynamics, and examine the tolerance…

超导电性 · 物理学 2022-09-01 Yuki Tanaka , Takumi Sanno , Takeshi Mizushima , Satoshi Fujimoto

We study the interplay between disorder and interaction in one-dimensional topological superconductors which carry localized Majorana zero-energy states. Using Abelian bosonization and the perturbative renormalization group (RG) approach,…

介观与纳米尺度物理 · 物理学 2012-10-10 Alejandro M. Lobos , Roman M. Lutchyn , S. Das Sarma

The non-local coherent nature of the Majorana devices is one of the key factors for realizing decoherence-free topological qubits. Direct observation of this coherent nature could provide a first-step benchmarking scheme to validate…

介观与纳米尺度物理 · 物理学 2020-02-19 Donghao Liu , Zhan Cao , Hao Zhang , Dong E. Liu

Determination of optimal control protocols for Majorana zero modes during their exchange is a crucial step towards the realisation of the topological quantum computer. In this paper, we study the finite-time exchange process of Majorana…

介观与纳米尺度物理 · 物理学 2025-07-22 Tomasz Maciazek , Mia Conlon

We investigate the equilibrium and non-equilibrium transport through a quantum dot in the Kondo regime, embedded between a normal metal and a topological superconductor supporting Majorana bound states at its end points. We find that the…

介观与纳米尺度物理 · 物理学 2014-11-07 Razvan Chirla , I. V. Dinu , V. Moldoveanu , Catalin Pascu Moca

A highlighting feature of Majorana bound states in two-dimensional topological superconductors is that they gain a phase factor of $\pi$ upon being orbited by a vortex. This work focuses on the vortex degree of freedom itself and…

强关联电子 · 物理学 2016-06-29 Jeffrey C. Y. Teo , Mayukh Nilay Khan , Smitha Vishveshwara

We study the low-energy physics of a one-dimensional array of superconducting quantum dots realized by proximity coupling a semiconductor nanowire to multiple superconducting islands separated by narrow uncovered regions. The effective…

介观与纳米尺度物理 · 物理学 2018-08-21 John P. T. Stenger , Benjamin D. Woods , Sergey M. Frolov , Tudor D. Stanescu

We theoretically examine a scheme for projectively reading out the parity state of a pair of Majorana bound states (MBS) using a tunnel coupled quantum dot. The dot is coupled to one end of the topological wire but isolated from any…

介观与纳米尺度物理 · 物理学 2016-10-19 Kaveh Gharavi , Darryl Hoving , Jonathan Baugh

Exchanging the positions of two non-Abelian anyons transforms between many-body wavefunctions within a degenerate ground-state manifold. This behavior is fundamentally distinct from fermions, bosons and Abelian anyons. Recently, quantum…

介观与纳米尺度物理 · 物理学 2026-02-26 Sebastian Miles , Francesco Zatelli , A. Mert Bozkurt , Michael Wimmer , Chun-Xiao Liu

It is generally thought that adiabatic exchange of two identical particles is impossible in one spatial dimension. Here we describe a simple protocol that permits adiabatic exchange of two Majorana fermions in a one-dimensional topological…

介观与纳米尺度物理 · 物理学 2015-04-23 Ching-Kai Chiu , M. M. Vazifeh , M. Franz

We study a topological superconductor island with spatially separated Majorana modes coupled to multiple normal metal leads by single electron tunneling in the Coulomb blockade regime. We show that low-temperature transport in such Majorana…

介观与纳米尺度物理 · 物理学 2017-11-08 Karen Michaeli , L. Aviad Landau , Eran Sela , Liang Fu

We present a new measurement-based scheme for performing braiding operations on Majorana zero modes and for detecting their non-Abelian statistics without moving or hybridizing them. In our scheme, the topological qubit encoded in any pair…

介观与纳米尺度物理 · 物理学 2017-01-04 Sagar Vijay , Liang Fu

We study the properties of a quantum dot coupled to a one-dimensional topological superconductor and a normal lead and discuss the interplay between Kondo and Majorana-induced couplings in quantum dot. The latter appears due to the presence…

介观与纳米尺度物理 · 物理学 2014-09-24 Meng Cheng , Michael Becker , Bela Bauer , Roman M. Lutchyn

Majorana fermions are particles identical to their own antiparticles. They have been theoretically predicted to exist in topological superconductors. We report electrical measurements on InSb nanowires contacted with one normal (Au) and one…

介观与纳米尺度物理 · 物理学 2012-04-13 V. Mourik , K. Zuo , S. M. Frolov , S. R. Plissard , E. P. A. M. Bakkers , L. P. Kouwenhoven

Unequivocal signatures of Majorana zero energy modes in condensed matter systems and manipulation of the associated electron parity states are highly sought after for fundamental reasons as well as for the prospect of topological quantum…

超导电性 · 物理学 2018-02-20 Rosa Rodriguez-Mota , Smitha Vishveshwara , T. Pereg-Barnea

Pure quantum states can be stabilized in open quantum systems subject to external driving forces and dissipation by environmental modes. We show that driven dissipative (DD) Majorana devices offer key advantages for stabilizing degenerate…

介观与纳米尺度物理 · 物理学 2020-10-06 M. Gau , R. Egger , A. Zazunov , Y. Gefen