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Quantum heat transfer through a generic superconducting set-up consisting of a tunable transmon qubit placed between resonators that are termined by thermal reservoirs is explored. Two types of architectures are considered, a sequential and…

Quantum Physics · Physics 2021-03-24 Meng Xu , J. T. Stockburger , J. Ankerhold

The quantum dot arrays (QDAs) embedded into inhomogeneous nanowires connected to metallic electrodes show an electron heat rectification effect, which is attributed to the thermal voltage arising from a temperature bias and the QDA with a…

Mesoscale and Nanoscale Physics · Physics 2017-06-22 David M T Kuo

We derive the frequency-resolved heat current expression in the linear response regime for a setup comprised of reservoir, interacting central site, and tunneling barrier under the action of a time dependent electrical signal. We exploit…

Mesoscale and Nanoscale Physics · Physics 2015-09-21 Guillem Rosello , Rosa Lopez , Jong Soo Lim

A detailed investigation of the non-equilibrium steady-state electric and thermoelectric transport properties of a quantum dot coupled to the normal metallic and s-wave superconducting reservoirs (N-QD-S) are provided within the Coulomb…

Mesoscale and Nanoscale Physics · Physics 2022-02-22 Sachin Verma , Ajay

Recent breakthroughs in quantum-dot circuit-quantum-electrodynamics (circuit-QED) systems are important both from a fundamental perspective and from the point of view of quantum photonic devices. However, understanding the applications of…

Mesoscale and Nanoscale Physics · Physics 2019-01-23 Jincheng Lu , Rongqian Wang , Jie Ren , Manas Kulkarni , Jian-Hua Jiang

Quantum heat transport devices are currently intensively studied in theory. Experimental realization of quantum heat transport devices is a challenging task. So far, they have been mostly investigated in experiments with ultra-cold atoms…

Mesoscale and Nanoscale Physics · Physics 2022-03-29 Azat Gubaydullin , George Thomas , Dmitry S. Golubev , Dmitrii Lvov , Joonas T. Peltonen , Jukka P. Pekola

We present a theoretical study of radiative heat transport in nonlinear solid-state quantum circuits. We give a detailed account of heat rectification effects, i.e. the asymmetry of heat current with respect to a reversal of the thermal…

Mesoscale and Nanoscale Physics · Physics 2009-04-28 Tomi Ruokola , Teemu Ojanen , Antti-Pekka Jauho

We study the heat current through two capacitively coupled quantum dots coupled in series with two conducting leads at different temperatures $T_L$ and $T_R$ in the spinless case (valid for a high applied magnetic field). Our results are…

Mesoscale and Nanoscale Physics · Physics 2020-02-19 A. A. Aligia , D. Pérez Daroca , L. Arrachea , P. Roura Bas

Precisely controlling heat transfer in a quantum mechanical system is particularly significant for designing quantum thermodynamical devices. With the technology of experiment advances, circuit quantum electrodynamics (circuit QED) has…

Quantum Physics · Physics 2023-09-21 Yu-qiang Liu , Yi-jia Yang , Chang-shui Yu

Heat is detrimental for the operation of quantum systems, yet it fundamentally behaves according to quantum mechanics, being phase coherent and universally quantum-limited regardless of its carriers. Due to their robustness, superconducting…

Mesoscale and Nanoscale Physics · Physics 2020-08-31 Olivier Maillet , Diego Subero , Joonas T. Peltonen , Dmitry S. Golubev , Jukka P. Pekola

We present a theoretical analysis of the nonlinear bias and temperature dependence of current-voltage characteristics of a spin-valve device which is formed by connecting a quantum dot to two ferromagnetic electrodes whose magnetic moments…

Condensed Matter · Physics 2015-06-25 Baigeng Wang , Jian Wang , Hong Guo

Quantum thermodynamics is emerging both as a topic of fundamental research and as means to understand and potentially improve the performance of quantum devices. A prominent platform for achieving the necessary manipulation of quantum…

Mesoscale and Nanoscale Physics · Physics 2018-11-14 Alberto Ronzani , Bayan Karimi , Jorden Senior , Yu-Cheng Chang , Joonas T. Peltonen , ChiiDong Chen , Jukka P. Pekola

We have observed thermal gating, i.e. electrostatic gating induced by hot electrons. The effect occurs in a device consisting of two capacitively coupled quantum dots. The double dot system is coupled to a hot electron reservoir on one side…

In quantum dot junctions capacitively coupled to a resonator, electron tunneling through the quantum dot can be used to transfer heat between different parts of the system. This includes cooling or heating the electrons in electrodes and…

Mesoscale and Nanoscale Physics · Physics 2024-07-30 S. Mojtaba Tabatabaei , Neda Jahangiri

We investigate direct energy and heat transfer between two distant sites of a triple quantum dot connected to reservoirs, where one of the edge dots is driven by an ac-gate voltage. We theoretically propose how to implement heat and cooling…

Mesoscale and Nanoscale Physics · Physics 2017-02-07 Fernando Gallego-Marcos , Gloria Platero

We discuss the nonlinear Andreev current of an interacting quantum dot coupled to spin-polarized and superconducting reservoirs when voltage and temperature biases are applied across the nanostructure. Due to the particle-hole symmetry…

Mesoscale and Nanoscale Physics · Physics 2017-10-17 Sun-Yong Hwang , David Sanchez , Rosa Lopez

We demonstrate gate control of electronic heat flow in a thermally-biased single-quantum-dot junction. Electron temperature maps taken in the immediate vicinity of the junction, as a function of the gate and bias voltages applied to the…

Mesoscale and Nanoscale Physics · Physics 2020-12-22 B. Dutta , D. Majidi , N. W. Talarico , N. Lo Gullo , C. B. Winkelmann , H. Courtois

Charge and heat transport in nano-structures is dominated by non-equilibrium effects which strongly influence their behaviour. These effects are studied in a setup consisting of three external leads, one of which is considered as a heat…

Mesoscale and Nanoscale Physics · Physics 2016-02-24 Barbara Szukiewicz , Ulrich Eckern , Karol I. Wysokinski

We demonstrate that when a quantum dot is embedded between the two reservoirs described by different statistical distribution functions, the reverse flow and amplification of heat can be realized by regulating the energy levels of the…

Mesoscale and Nanoscale Physics · Physics 2021-09-22 Jianying Du , Tong Fu , Jingyi Chen , Shanhe Su , Jincan Chen

We discuss the nonlinear current of an interacting quantum dot coupled to normal and superconducting reservoirs with applied voltage and temperature differences. Due to the particle-hole symmetry introduced by the superconducting lead, the…

Mesoscale and Nanoscale Physics · Physics 2015-03-24 Sun-Yong Hwang , Rosa Lopez , David Sanchez