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相关论文: Full Counting Statistics of a Non-adiabatic Electr…

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A spin strongly driven by two harmonic incommensurate drives can pump energy from one drive to the other at a quantized average rate, in close analogy with the quantum Hall effect. The pumping rate is a non-zero integer in the topological…

介观与纳米尺度物理 · 物理学 2020-09-02 Philip J. D. Crowley , Ivar Martin , Anushya Chandran

We study adiabatic pumping through a double quantum dot coupled to normal and superconducting leads. For this purpose a perturbation expansion in the tunnel coupling between the dots and the normal leads is performed and processes…

介观与纳米尺度物理 · 物理学 2011-10-07 Bastian Hiltscher , Michele Governale , Janine Splettstoesser , Jürgen König

We propose a highly-scalable method to compute the statistics of charge transfer in driven conductors. The framework can be applied in situations of non-zero temperature, strong coupling to terminals and in the presence of non-periodic…

We study the adiabatic quantum pumping characteristics in the graphene modulated by two oscillating gate potentials out of phase. The angular and energy dependence of the pumped current is presented. The direction of the pumped current can…

介观与纳米尺度物理 · 物理学 2015-05-13 Rui Zhu , Huiming Chen

Microscopic theory of counting statistics of electrical noise is reviewed. We discuss a model of passive charge detector based on current fluctuations coupled to a spin, and its relation with the theory of photon counting in quantum optics.…

介观与纳米尺度物理 · 物理学 2007-05-23 L. S. Levitov

Mixed-quantum-classical molecular dynamics simulation implies an effective measurement on the electronic states owing to continuously tracking the atomic forces.Based on this insight, we propose a quantum trajectory mean-field approach for…

化学物理 · 物理学 2014-08-08 Wei Feng , Luting Xu , Xin-Qi Li , Weihai Fang , YiJing Yan

We study charge and spin transport through an interacting quantum wire, caused by backscattering off an effective impurity potential with a periodic time-dependence. The adiabatic regime of this pump for charge and spin is shown to depend…

介观与纳米尺度物理 · 物理学 2009-11-07 Prashant Sharma , Claudio Chamon

We investigate the noise properties of pump currents through molecular wires and coupled quantum dots. As a model we employ a two level system that is connected to electron reservoirs and is non-adiabatically driven. Concerning the…

介观与纳米尺度物理 · 物理学 2011-11-10 Franz J. Kaiser , Sigmund Kohler

The combined quantum electron-nuclear dynamics is often associated with the Born-Huang expansion of the molecular wave function and the appearance of nonadiabatic effects as a perturbation. On the other hand, native multicomponent…

We consider the counting statistics of electron transport through a double quantum dot with special emphasis on the dephasing induced by a nearby charge detector. The double dot is embedded in a dissipative enviroment, and the presence of…

介观与纳米尺度物理 · 物理学 2009-01-08 Alessandro Braggio , Christian Flindt , Tomas Novotny

We present a theory of full counting statistics for electron transport through interacting electron systems with non-Markovian dynamics. We illustrate our approach for transport through a single-level quantum dot and a metallic…

强关联电子 · 物理学 2007-05-23 Alessandro Braggio , Jürgen König , Rosario Fazio

We consider charge pumping in a system of parafermions, implemented at fractional quantum Hall edges. Our pumping protocol leads to a noisy behavior of the pumped current. As the adiabatic limit is approached, not only does the noisy…

介观与纳米尺度物理 · 物理学 2018-06-05 Yaroslav Herasymenko , Kyrylo Snizhko , Yuval Gefen

In Thouless pump, the charge transport in a one-dimensional insulator over an adiabatic cycle is topologically quantized. For nonequilibrium initial states, however, interband coherence will induce a previously unknown contribution to…

介观与纳米尺度物理 · 物理学 2020-05-13 Gudapati Naresh Raghava , Longwen Zhou , Jiangbin Gong

A Brownian pump in nonlinear diffusive media is investigated in the presence of an unbiased external force. The pumping system is embedded in a finite region and bounded by two particle reservoirs. In the adiabatic limit, we obtain the…

统计力学 · 物理学 2010-03-23 Bao-quan Ai , Liang-gang Liu

Quantum adiabatic pumping of charge and spin between two reservoirs (leads) has recently been demonstrated in nanoscale electronic devices. Pumping occurs when two or more system parameters are varied in a cyclic manner and sufficiently…

介观与纳米尺度物理 · 物理学 2016-08-31 Huan-Qiang Zhou , Sam Young Cho , Ross H. McKenzie

We present a method to study rare nonadiabatic dynamics in open quantum systems using transition path sampling and quantum jump trajectories. As with applications of transition path sampling to classical dynamics, the method does not rely…

统计力学 · 物理学 2021-12-08 Addison J. Schile , David T. Limmer

We investigate the non-equilibrium charge dynamics of a triple quantum dot and demonstrate how electron transport through these systems can give rise to non-trivial tunnelling paths. Using a real-time charge sensing method we establish…

介观与纳米尺度物理 · 物理学 2016-09-13 M. A. Broome , S. K. Gorman , J. G. Keizer , T. F. Watson , S. J. Hile , W. J. Baker , M. Y. Simmons

In this article, we briefly review dynamical and thermodynamical aspects of different forms of quantum motors and quantum pumps. We then extend previous results to provide new theoretical tools for a systematic study of those phenomena at…

介观与纳米尺度物理 · 物理学 2019-08-26 Raúl A. Bustos-Marún , Hernan L. Calvo

We introduce and discuss a scheme for Cooper-pair pumping. The scheme relies on the coherent transfer of a superposition of charge states across a superconducting island and is realized by adiabatic manipulation of magnetic fluxes.…

超导电性 · 物理学 2012-12-18 S. Gasparinetti , I. Kamleitner

Rectification of ac displacement currents generated by periodic variation of two independent gate voltages of a quantum dot can lead to a dc voltage linear in the frequency. The presence of this rectified displacement current could account…

介观与纳米尺度物理 · 物理学 2009-10-31 P. W. Brouwer