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相关论文: Counting statistics of coherent population trappin…

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We theoretically consider charge transport through two quantum dots coupled in series. The corresponding full counting statistics for noninteracting electrons is investigated in the limits of sequential and coherent tunneling by means of a…

介观与纳米尺度物理 · 物理学 2009-11-11 G. Kiesslich , P. Samuelsson , A. Wacker , E. Schoell

We present a fully electronic analogue of coherent population trapping in quantum optics, based on destructive interference of single-electron tunneling between three quantum dots. A large bias voltage plays the role of the laser…

介观与纳米尺度物理 · 物理学 2007-05-23 B. Michaelis , C. Emary , C. W. J. Beenakker

We study theoretically the full counting statistics of electron transport through side-coupled double quantum dot (QD) based on an efficient particle-number-resolved master equation. It is demonstrated that the high-order cumulants of…

介观与纳米尺度物理 · 物理学 2013-10-02 Hai-Bin Xue

We explore the full counting statistics of single electron tunneling through a quantum dot using a quantum point contact as non-invasive high bandwidth charge detector. The distribution of counted tunneling events is measured as a function…

介观与纳米尺度物理 · 物理学 2009-11-13 C. Fricke , F. Hohls , W. Wegscheider , R. J. Haug

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 use time-resolved charge detection techniques to investigate single-electron tunneling in semiconductor quantum dots. The ability to detect individual charges in real-time makes it possible to count electrons one-by-one as they pass…

介观与纳米尺度物理 · 物理学 2009-05-29 S. Gustavsson , R. Leturcq , M. Studer , I. Shorubalko , T. Ihn , K. Ensslin , D. C. Driscoll , A. C. Gossard

In order to fully characterize the noise associated with electron transport, with its severe consequences for solid-state quantum information systems, the theory of full counting statistics has been developed. It accounts for correlation…

介观与纳米尺度物理 · 物理学 2009-11-11 D. A. Bagrets , Y. Utsumi , D. S. Golubev , G. Schoen

We present time-resolved measurements of electron transport through a quantum dot. The measurements were performed using a nearby quantum point contact as a charge detector. The rates for tunneling through the two barriers connecting the…

介观与纳米尺度物理 · 物理学 2009-11-11 S. Gustavsson , R. Leturcq , B. Simovic , R. Schleser , P. Studerus , T. Ihn , K. Ensslin , D. C. Driscoll , A. C. Gossard

We report on measurements of single electron tunneling through a quantum dot using a quantum point contact as non-invasive charge detector with fast time response. We elaborate on the unambiguous identification of individual tunneling…

介观与纳米尺度物理 · 物理学 2010-03-03 Christian Fricke , Frank Hohls , Christian Flindt , Rolf J. Haug

In this paper, we study the quantum decoherence induced by accumulation of electron tunnelings during the quantum measurement of a charge qubit. The charge qubit is a single electron confined in coupled quantum dots. The measurement of the…

介观与纳米尺度物理 · 物理学 2009-11-11 Ming-Tsung Lee , Wei-Min Zhang

We investigate the effect of quantum interferences and Coulomb interaction on the counting statistics of electrons crossing a double quantum dot in a parallel geometry using a generating function technique based on a quantum master equation…

介观与纳米尺度物理 · 物理学 2008-05-26 Sven Welack , Massimiliano Esposito , Upendra Harbola , Shaul Mukamel

Stochastic systems feature, in general, both coherent dynamics and incoherent transitions between different states. We propose a method to identify the coherent part in the full counting statistics for the transitions. The proposal is…

介观与纳米尺度物理 · 物理学 2018-07-10 Philipp Stegmann , Jürgen König , Stephan Weiss

We propose a new transport mechanism through tunnel-coupled quantum dots based on the coherent population trapping effect. Coupling to an excited level by the coherent radiation of two microwaves can lead to an extremely narrow current…

介观与纳米尺度物理 · 物理学 2009-10-31 T. Brandes , F. Renzoni

A fundamental question in quantum transport is how quantum coherence influences charge transfer through nanostructures. We address this issue for linear triple quantum dots by comparison of a Lindblad density matrix description with a Pauli…

介观与纳米尺度物理 · 物理学 2017-04-26 L. D. Contreras-Pulido , M. Bruderer

Charge transfer statistics of quantum particles is obtained by analysing the time evolution of the many-body wave function. Exploiting properly chosen gauge transformations, we construct the probabilities for transfers of a discrete number…

介观与纳米尺度物理 · 物理学 2009-11-07 A. Shelankov , J. Rammer

Real-time detection of single electron tunneling through a T-shaped double quantum dot is simulated, based on a Monte Carlo scheme. The double dot is embedded in a dissipative environment and the presence of electrons on the double dot is…

介观与纳米尺度物理 · 物理学 2015-05-20 JunYan Luo , Shi-Kuan Wang , Xiao-Ling He , Xin-Qi Li , YiJing Yan

A mesoscopic Coulomb blockade system with two identical transport channels is studied in terms of full counting statistics. It is found that the average current cannot distinguish the quantum constructive interference from the classical…

介观与纳米尺度物理 · 物理学 2009-11-13 Shi-Kuan Wang , Hujun Jiao , Feng Li , Xin-Qi Li , YiJing Yan

We theoretically study the conditional counting statistics of electron transport through a system consisting of a single quantum dot (SQD) or coherently coupled double quantum dots (DQD's) monitored by a nearby quantum point contact (QPC)…

介观与纳米尺度物理 · 物理学 2017-12-01 Yen-Jui Chang , Tsung-Kang Yeh , Chao-Hung Wan , D. Wahyu Utami , Gerard J. Milburn , Hsi-Sheng Goan

We examine the full counting statistics of quantum dots, which display super-Poissonian shot noise. By an extension to a generic situation with many excited states we identify the underlying transport process. The statistics is a sum of…

强关联电子 · 物理学 2007-05-23 W. Belzig

A quantum dot is a sub-micron-scale conducting device containing up to several thousand electrons. Transport through a quantum dot at low temperatures is a quantum-coherent process. This review focuses on dots in which the electron's…

介观与纳米尺度物理 · 物理学 2008-11-26 Y. Alhassid
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