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相关论文: Fano Resonances in Majorana Bound States - Quantum…

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In this minireview, we outline the recent experimental and theoretical progress in the creation, characterization and manipulation of Majorana bound states (MBSs) in semiconductor-superconductor (SC) hybrid structures. After an introductory…

介观与纳米尺度物理 · 物理学 2020-07-10 Alexander Schuray , Daniel Frombach , Sunghun Park , Patrik Recher

We investigate the linear thermoelectric response of an interacting quantum dot side-coupled by one of two Majorana fermions (MFs) formed at the ends of a topological superconducting wire. We employ the numerical renormalization group…

介观与纳米尺度物理 · 物理学 2014-08-22 Heunghwan Khim , Rosa Lopez , Jong Soo Lim , Minchul Lee

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 topological superconducting wire with an effective time reversal symmetry is known to have a $\mathbb{Z}_8$ topological classification in the presence of interactions. The topological index $|n| \le 4$ counts the number of Majorana end…

介观与纳米尺度物理 · 物理学 2016-04-27 Dganit Meidan , Alessandro Romito , Piet W. Brouwer

We investigate the effects of Majorana bound states on the ac response of a quantum resistor-capacitor circuit which is composed of a topological superconducting wire whose two ends are tunnel-coupled to a lead and a spinless quantum dot,…

介观与纳米尺度物理 · 物理学 2020-11-10 Minchul Lee

We have observed the Fano-Kondo anti-resonance in a quantum wire with a side-coupled quantum dot. In a weak coupling regime, dips due to the Fano effect appeared. As the coupling strength increased, conductance in the regions between the…

介观与纳米尺度物理 · 物理学 2009-11-10 Masahiro Sato , Hisashi Aikawa , Kensuke Kobayashi , Shingo Katsumoto , Yasuhiro Iye

Majorana bound states (MBS) differ from the regular zero energy Andreev bound states in their nonlocal properties, since two MBS form a single fermion. We design strategies for detection of this nonlocality by using the phenomenon of…

介观与纳米尺度物理 · 物理学 2016-09-28 S. Rubbert , A. R. Akhmerov

We investigate the Fano-type spectroscopic lineshapes of the T-shape double quantum dot coupled between the conducting and superconducting electrodes and analyze their stability on a decoherence. Because of the proximity effect the quantum…

介观与纳米尺度物理 · 物理学 2012-06-01 J. Baranski , T. Domanski

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 report a transport experiment on the Fano effect in a quantum connecting wire (QW) with a side-coupled quantum dot (QD). The Fano resonance occurs between the QD and the "T-shaped" junction in the wire, and the transport detects…

介观与纳米尺度物理 · 物理学 2009-11-10 Kensuke Kobayashi , Hisashi Aikawa , Akira Sano , Shingo Katsumoto , Yasuhiro Iye

Due to their nonlocality, qubits nested in Majorana bound states may be the key to realize decoherence-free quantum computation. Majorana bound states could be achieved at the ends of a one-dimensional topological superconductor. However,…

介观与纳米尺度物理 · 物理学 2015-06-11 Hai-Feng Lu , Hai-Zhou Lu , Shun-Qing Shen

We demonstrate that partially overlapping Majorana bound states (MBSs) represent a generic low-energy feature that emerges in non-homogeneous semiconductor nanowires coupled to superconductors in the presence of a Zeeman field. The…

介观与纳米尺度物理 · 物理学 2018-04-09 Christopher Moore , Tudor D. Stanescu , Sumanta Tewari

We propose an alternative route to transport experiments for detecting Majorana bound states (MBSs) by combining topological superconductivity with quantum optics in a superconducting $pn$ junction containing a quantum dot (QD). We consider…

介观与纳米尺度物理 · 物理学 2022-12-02 L. Bittermann , C. De Beule , D. Frombach , P. Recher

The ballistic conductance through a device consisting of quantum wires, to which two stubs are attached laterally, is calculated assuming parabolic confining potentials of frequencies $\omega_w$ for the wires and $\omega_s$ for the stubs.…

介观与纳米尺度物理 · 物理学 2016-08-16 R. Akis , P. Vasilopoulos , P. Debray

We investigate theoretically the features of the Majorana hallmark in the presence of Coulomb repulsion between two quantum dots describing a spinless Aharonov-Bohm-like interferometer, where one of the dots is strongly coupled to a Kitaev…

强关联电子 · 物理学 2015-12-14 L. S. Ricco , Y. Marques , F. A. Dessotti , M. de Souza , A. C. Seridonio

Majorana fermions are fascinating and not yet confirmed quasiparticles in condensed matter physics. Here we propose using microwave spectra to distinguish Majorana bound states (MBSs) from topological trivial Andreev bound states. By…

量子物理 · 物理学 2018-03-14 Zhen-Tao Zhang

We study the optical properties of a hybrid device composed by a quantum dot (QD) resonantly coupled to a photonic mode of an optical microcavity and a Majorana nanowire: a topological superconducting segment hosting Majorana bound states…

介观与纳米尺度物理 · 物理学 2023-02-16 L. S. Ricco , V. K. Kozin , A. C. Seridonio , I. A. Shelykh

We investigate theoretically the Andreev transport through a quantum dot strongly coupled with a normal metal/ferromagnet and a superconductor (N/F-QD-S), in which the interplay between the Kondo resonance and the Andreev bound states…

强关联电子 · 物理学 2015-12-09 Lin Li , Zhan Cao , Hong-Gang Luo , Fu-Chun Zhang , Wei-Qiang Chen

One of the main features of the Majorana state, which attracts a considerable current interest to these excitations in solid-state systems, is related to its nonlocal character. It is demonstrated that the direct consequence of such…

介观与纳米尺度物理 · 物理学 2020-06-24 S. V. Aksenov , M. Yu. Kagan

Hybrid system composed by a semiconducting nanowire with proximity-induced superconductivity and a quantum dot at the end working as spectrometer was recently used to quantify the so-called degree of Majorana nonlocality [Deng et al.,…

介观与纳米尺度物理 · 物理学 2019-05-03 L. S. Ricco , M. de Souza , M. S. Figueira , I. A. Shelykh , A. C. Seridonio