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相关论文: Transport properties of proximitized double quantu…

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We extend our approach based on the second order perturbation theory in the Coulomb interaction recently developed for quantum dots coupled to superconducting leads to the superconducting double quantum dot setups. Using our perturbative…

介观与纳米尺度物理 · 物理学 2020-07-27 Vladislav Pokorný , Martin Žonda , Georgios Loukeris , Tomáš Novotný

We study the transport properties of a double quantum dot (DQD) molecule at zero and at finite temperature. The properties of the zero temperature conductance depends on whether the level attraction between the symmetric and antisymmetric…

介观与纳米尺度物理 · 物理学 2007-07-26 Laszlo Oroszlany , Andor Kormanyos , Janos Koltai , Jozsef Cserti , Colin Lambert

We present quantum transport measurements of interacting parallel quantum dots formed in the strands of a carbon nanotube rope. In this molecular quantum dot system, transport is dominated by one quantum dot, while additional resonances…

介观与纳米尺度物理 · 物理学 2015-06-11 Karin Goß , Martin Leijnse , Sebastian Smerat , Maarten R. Wegewijs , Claus M. Schneider , Carola Meyer

We investigate transport through hybrid structures consisting of two normal metal leads connected via tunnel barriers to one common superconducting electrode. We find clear evidence for the occurrence of non-local Andreev reflection and…

超导电性 · 物理学 2009-11-11 S. Russo , M. Kroug , T. M. Klapwijk , A. F. Morpurgo

We discuss a quantum thermal machine that generates power from a thermally driven double quantum dot coupled to normal and superconducting reservoirs. Energy exchange between the dots is mediated by electron-electron interactions. We can…

介观与纳米尺度物理 · 物理学 2022-09-19 S. Mojtaba Tabatabaei , David Sanchez , Alfredo Levy Yeyati , Rafael Sanchez

We present a theoretical investigation for the full counting statistics of the Andreev tunneling through a quantum dot (QD) embedded between superconducting (SC) and normal leads in the presence of a strong on-site electron-phonon…

介观与纳米尺度物理 · 物理学 2017-01-18 B. Dong , G. H. Ding , X. L. Lei

The transport properties of a double quantum-dot device with one of the dots coupled to perfect conductors are analyzed using the numerical renormalization group technique and slave-boson mean-field theory. The coupling between the dots…

介观与纳米尺度物理 · 物理学 2007-05-23 P. S. Cornaglia , D. R. Grempel

We study tunneling spectroscopy between a normal metal and underdoped cuprate superconductor modeled by a phenomenological theory in which the pseudogap is a precursor to the undoped Mott insulator. In the transparent tunneling limit, the…

超导电性 · 物理学 2010-12-08 Kai-Yu Yang , Kun Huang , Wei-Qiang Chen , T. M. Rice , Fu-Chun Zhang

We investigate theoretically charge transport in hybrid multiterminal junctions with superconducting leads kept at different voltages. It is found that multiple Andreev reflections involving several superconducting leads give rise to rich…

介观与纳米尺度物理 · 物理学 2011-04-21 M. Houzet , P. Samuelsson

We analyze non-local effects in electron transport across three-terminal normal-superconducting-normal (NSN) structures. Subgap electrons entering S-electrode from one N-metal may form Cooper pairs with their counterparts penetrating from…

超导电性 · 物理学 2007-06-13 Mikhail S. Kalenkov , Andrei D. Zaikin

Electronic transport through a two-path triple-quantum-dot system with two source leads and one drain is studied. By separating the conductance of the two double dot paths, we are able to observe double dot and triple dot physics in…

介观与纳米尺度物理 · 物理学 2016-08-03 M. Kotzian , F. Gallego-Marcos , G. Platero , R. J. Haug

We theoretically study transport properties of voltage-biased one-dimensional superconductor--normal metal--superconductor tunnel junctions with arbitrary junction transparency where the superconductors can have trivial or nontrivial…

介观与纳米尺度物理 · 物理学 2017-05-24 F. Setiawan , William S. Cole , Jay D. Sau , S. Das Sarma

We study the influence of the proximity-induced pairing on electronic version of the Dicke effect in a heterostructure, comprising three quantum dots vertically coupled between the metallic and superconducting leads. We discuss a feasible…

介观与纳米尺度物理 · 物理学 2017-03-16 S. Glodzik , K. P. Wójcik , I. Weymann , T. Domanski

Atomic quantum point contacts accommodate a small number of conduction channels. Their number N and transmission coefficients {T_n} can be determined by analyzing the subgap structure due to multiple Andreev reflections in the…

超导电性 · 物理学 2009-10-31 E. Scheer , J. C. Cuevas , A. Levy Yeyati , A. Martin-Rodero , P. Joyez , M. H. Devoret , D. Esteve , C. Urbina

Transport properties of a single plasmon interacting with two quantum dots (QDs) system coupled to one-dimensional surface plasmonic waveguide are investigated theoretically via the real-space approach. We mainly focus on the coupling…

We present a proof-of-principle of how electronic transport measurements permits the observation of the Autler-Townes doublet, an optical property of nanodevices. The quantum physical system consists of one optically pumped quantum dot, a…

介观与纳米尺度物理 · 物理学 2018-08-24 M. O. Assunção , G. S. Diniz , L. Sanz , F. M. Souza

We investigate the electronic transport through two parallel double quantum dots coupled both capacitively and via a perpendicularly aligned charge qubit. The presence of the qubit leads to a modification of the coherent tunnel amplitudes…

介观与纳米尺度物理 · 物理学 2012-06-19 Christian Nietner , Gernot Schaller , Christina Pöltl , Tobias Brandes

We consider the out-of-equilibrium behavior of a general class of mesoscopic devices composed of several superconducting or/and normal metal leads separated by quantum dots. Starting from a microscopic Hamiltonian description, we provide a…

超导电性 · 物理学 2020-09-02 R. Jacquet , A. Popoff , K. -I. Imura , J. Rech , T. Jonckheere , L. Raymond , A. Zazunov , T. Martin

We study transport through a quantum dot side-coupled to two parallel Luttinger liquid leads in the presence of a Coulombic dot-lead interaction. This geometry enables an exact treatment of the inter-lead Coulomb interactions. We find that…

介观与纳米尺度物理 · 物理学 2015-05-27 Florian Elste , David Reichman , Andrew Millis

We report conductance and supercurrent measurements for InAs single and parallel double quantum dot Josephson junctions contacted with Nb or NbTiN superconducting electrodes. Large superconducting gap energy, high critical field and large…