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We investigate a quadruple quantum dot setup that can be employed to sense the temperature of an electrically isolated remote target reservoir. Such a setup was conceived earlier by S\'anchez et. al. (New Journal of Physics, 19, 113040) as…

介观与纳米尺度物理 · 物理学 2021-03-23 Sagnik Banerjee , Aniket Singha

Optimal non-local heat-engines, based on Coulomb-coupled systems, demand a sharp step-like change in the energy resolved system-to-reservoir coupling around the ground state of quantum-dots. Such a sharp step-like transition in the…

应用物理 · 物理学 2020-07-15 Aniket Singha

Employing Coulomb-coupled systems, we demonstrate a cryogenic non-local refrigeration engine, that circumvents the need for a change in the energy resolved system-to-reservoir coupling, demanded by the recently proposed non-local…

应用物理 · 物理学 2021-02-03 Anamika Barman , Surojit Halder , Shailendra K. Varshney , Gourab Dutta , Aniket Singha

We study a three-terminal setup consisting of a single-level quantum dot capacitively coupled to a quantum point contact. The point contact connects to a source and drain reservoirs while the quantum dot is coupled to a single base…

介观与纳米尺度物理 · 物理学 2019-07-31 Jing Yang , Cyril Elouard , Janine Splettstoesser , Björn Sothmann , Rafael Sánchez , Andrew N. Jordan

A theoretical proposal that Coulomb-coupled quantum dots can be used as quantum probes to determine the temperature of a sample (i.e., an electronic reservoir) is proposed. Through the regulation of the positive or negative voltage bias in…

介观与纳米尺度物理 · 物理学 2019-08-13 Yanchao Zhang , Jincan Chen

The rapidly developing quantum technologies and thermodynamics have put forward a requirement to precisely control and measure the temperature of microscopic matter at the quantum level. Many quantum thermometry schemes have been proposed.…

量子物理 · 物理学 2022-04-01 Ning Zhang , Chong Chen , Si-Yuan Bai , Wei Wu , Jun-Hong An

Probes that measure the local thermal properties of systems out of equilibrium are emerging as new tools in the study of nanoscale systems. One can then measure the temperature of a probe that is weakly coupled to a bias-driven system. By…

强关联电子 · 物理学 2015-05-13 LvZhou Ye , Dong Hou , Xiao Zheng , YiJing Yan , Massimiliano Di Ventra

We investigated quantum thermal machines powered by sequential nonselective generalized measurements, taking a double quantum dot with coherent interdot tunneling as a working substance. In this platform, the competition between detuning…

量子物理 · 物理学 2026-05-11 Bruno Carvalho , Jonas F. G. Santos , Moises Rojas

Multi-terminal multi-dot devices have been put forward as versatile and performant setups for thermoelectric energy harvesting at the nanoscale. With a technique that encompasses and overtakes several of the usual theoretical tools used in…

介观与纳米尺度物理 · 物理学 2019-12-04 A. -M. Daré

We investigate the sensing performance of a single-qubit quantum thermometer within a non-Markovian dynamical framework. By employing an exactly numerical hierarchical equations of the motion method, we go beyond traditional paradigms of…

量子物理 · 物理学 2021-10-18 Ze-Zhou Zhang , Wei Wu

We investigate quantum thermometry using a single-qubit probe embedded in a non-Markovian environment, employing the numerically exact hierarchical equations of motion (HEOM) to overcome the limitations of Born-Markov approximations.…

量子物理 · 物理学 2025-10-22 Qing-Shou Tan , Yang Liu , Xulin Liu , Hao Chen , Xing Xiao , Wei Wu

In this article we review the thermoelectric properties of three terminal devices with Coulomb coupled quantum dots (QDs) as observed in recent experiments [1,2]. The system we consider consists of two Coulomb-blockade QDs one of which can…

介观与纳米尺度物理 · 物理学 2016-11-17 Holger Thierschmann , Rafael Sánchez , Björn Sothmann , Hartmut Buhmann , Laurens W. Molenkamp

We propose and investigate thermometry of a setup employing dual quantum dots with staircase ground state configuration. The stair-case ground state configuration actuates thermally controlled inelastic tunnelling, which translates into a…

介观与纳米尺度物理 · 物理学 2022-05-25 Sagnik Banerjee , Aniket Singha

We study heat rectification through quantum dots in the Coulomb blockade regime using a master equation approach. We consider both cases of two-terminal and four-terminal devices. In the two-terminal configuration, we analyze the case of a…

介观与纳米尺度物理 · 物理学 2022-03-11 Ludovico Tesser , Bibek Bhandari , Paolo Andrea Erdman , Elisabetta Paladino , Rosario Fazio , Fabio Taddei

We analyze the power output of a quantum dot machine coupled to two electronic reservoirs via thermoelectric contacts, and to two thermal reservoirs - one hot and one cold. This machine is a nanoscale analogue of a conventional thermocouple…

介观与纳米尺度物理 · 物理学 2016-11-11 Robert. S. Whitney , Rafael Sánchez , Federica Haupt , Janine Splettstoesser

A quantum-dot thermal transistor consisting of three Coulomb-coupled quantum dots coupled to respective electronic reservoirs by tunnel contacts is established. The heat flows through the collector and emitter can be controlled by the…

应用物理 · 物理学 2018-11-29 Yanchao Zhang , Zhimin Yang , Xin Zhang , Bihong Lin , Guoxing Lin , Jincan Chen

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…

介观与纳米尺度物理 · 物理学 2022-02-22 Sachin Verma , Ajay

We numerically investigate the thermoelectric properties of a triangle quantum dot connected to metallic electrodes using the non-equilibrium Green's function method in the Anderson model. Exploiting the equation of motion method in the…

介观与纳米尺度物理 · 物理学 2022-06-08 Ahmad Ahmadi Fouladi , Javad Vahedi

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…

介观与纳米尺度物理 · 物理学 2017-02-07 Fernando Gallego-Marcos , Gloria Platero

We investigate non-equilibrium transport of charge and heat through an interacting quantum dot coupled to a finite electron reservoir. Both the quantum dot and the finite reservoir are coupled to conventional electric contacts, i.e.,…

介观与纳米尺度物理 · 物理学 2024-11-19 Stephanie Matern , Saulo V. Moreira , Peter Samuelsson , Martin Leijnse
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