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相关论文: Phonon-Assisted Tunneling through Quantum Dot Syst…

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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

The Josephson supercurrent through the hybrid Majorana--quantum dot--Majorana junction is investigated. We particularly analyze the effect of spin-selective coupling between the Majorana and quantum dot states, which emerges only in the…

介观与纳米尺度物理 · 物理学 2017-07-11 Luting Xu , Xin-Qi Li , Qing-Feng Sun

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 investigate the influences of the electron-phonon interaction on the transport properties of one quantum-dot system with a side-coupled Majorana zero mode (MZM). Our calculation results show that at the zero-temperature limit, the…

介观与纳米尺度物理 · 物理学 2020-03-18 Xiao-Qi Wang , B. H. Wu , Shu-Feng Zhang , Qi Wang , Wei-Jiang Gong

We consider a model of a Josephson junction of two topological superconducting wires mediated by an interacting quantum dot. An additional normal electrode coupled to the dot from the top allows to probe its density of states. The Majorana…

介观与纳米尺度物理 · 物理学 2019-03-07 Piotr Stefański

In this paper, we investigate the quantum transport of a double quantum dot coupled with a nanomechanical resonator at arbitrary strong electron-phonon coupling regimes. We employ the generalized quantum master equation to study full…

介观与纳米尺度物理 · 物理学 2012-04-22 Chen Wang , Jie Ren , Baowen Li , Qing-Hu Chen

We consider transport through a vibrating molecular quantum dot contacted to macroscopic leads acting as charge reservoirs. In the equilibrium and nonequilibrium regime, we study the formation of a polaron-like transient state at the…

强关联电子 · 物理学 2015-06-04 T. Koch , H. Fehske , J. Loos

We observe a series of sharp resonant features in the tunnelling differential conductance of InAs quantum dots. We found that dissipative quantum tunnelling has a strong influence on the operation of nano-devices. Because of such tunnelling…

We study two-terminal configurations in junctions between a topological superconducting wire with spin-orbit coupling and magnetic field, and an ordinary conductor with an embedded quantum dot. One of the signatures of the Majorana zero…

超导电性 · 物理学 2023-07-26 Leonel Gruñeiro , Miguel Alvarado , Alfredo Levy Yeyati , Liliana Arrachea

We investigate the transport properties through a nanostructure composed of parallel double quantum dots coupled to two normal contacts. Additionally, each quantum dot is connected to a topological superconducting nanowire, hosting Majorana…

介观与纳米尺度物理 · 物理学 2023-03-01 A. P. Garrido , D. Zambrano , J. P. Ramos-Andrade , P. A. Orellana

We study transport through a double quantum dot system in which each quantum dot is coupled to a phonon mode. Such a system can be realized, e.g., using a suspended carbon nanotube. We find that the interplay between strong electron-phonon…

介观与纳米尺度物理 · 物理学 2013-11-26 Stefan Walter , Björn Trauzettel , Thomas L. Schmidt

The expression for additional subgap current in the presence of electron-phonon interaction is derived. We show that the phonon assisted tunneling leads to appearance of peaks on current-voltage characteristics at the Josephson frequencies…

超导电性 · 物理学 2009-10-31 E. G. Maksimov , P. I. Arseyev , N. S. Maslova

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 consider a quantum dot coupled to a topological superconductor and two normal leads and study transport properties of the system. Using Keldysh path-integral approach, we study current fluctuations (shot noise) within the low-energy…

介观与纳米尺度物理 · 物理学 2015-04-08 Dong E. Liu , Meng Cheng , Roman M. Lutchyn

Transport through a single molecular conductor is considered, showing negative differential conductance behavior associated with phonon-mediated electron tunneling processes. This theoretical work is motivated by a recent experiment by…

介观与纳米尺度物理 · 物理学 2009-11-11 Alex Zazunov , Denis Feinberg , Thierry Martin

We propose an experimental setup for detecting a Majorana zero mode consisting of a spinless quantum dot coupled to the end of a p-wave superconducting nanowire. The Majorana bound state at the end of the wire strongly influences the…

介观与纳米尺度物理 · 物理学 2011-11-22 Dong E. Liu , Harold U. Baranger

Electron transport through [normal metal]-[quantum dot]-[topological superconductor] junction is studied and reveals interlacing physics of Kondo correlations with two Majorana fermions bound state residing on the opposite edges of the…

强关联电子 · 物理学 2013-05-29 Anatoly Golub , Igor Kuzmenko , Yshai Avishai

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

In this paper we report a relaxation-induced suppression of the noise for a single level quantum dot coupled to an oscillator with incoherent dynamics in the sequential tunneling regime. It is shown that relaxation induces qualitative…

介观与纳米尺度物理 · 物理学 2007-05-23 F. Haupt , F. Cavaliere , R. Fazio , M. Sassetti

We study the transport properties of a quantum dot-Majorana hybrid system, in which each of paired Majorana bound states is connected to one quantum dot. With the help of non-equilibrium Green's function method, we obtain an exact solution…

介观与纳米尺度物理 · 物理学 2014-11-18 Hai-Feng Lu , Hai-Zhou Lu , Shun-Qing Shen
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