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相关论文: High cumulants in the counting statistics measured…

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Measurements of single electron tunneling through a quantum dot using a quantum point contact as charge detector have been performed for very long time traces with very large event counts. This large statistical basis is used for a detailed…

介观与纳米尺度物理 · 物理学 2010-06-04 Christian Fricke , Frank Hohls , Nandhavel Sethubalasubramanian , Lukas Fricke , Rolf J. Haug

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 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

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

Recent experimental progress has made it possible to detect in real-time single electrons tunneling through Coulomb blockade nanostructures, thereby allowing for precise measurements of the statistical distribution of the number of…

介观与纳米尺度物理 · 物理学 2010-10-07 Christian Flindt , Tomas Novotny , Alessandro Braggio , Antti-Pekka Jauho

Low-temperature transport experiments on a p-type GaAs quantum dot capacitively coupled to a quantum point contact are presented. The time-averaged as well as time-resolved detection of charging events of the dot are demonstrated and they…

介观与纳米尺度物理 · 物理学 2013-07-15 Y. Komijani , T. Choi , F. Nichele , K. Ensslin , T. Ihn , D. Reuter , A. D. Wieck

We study full counting statistics of electron tunneling in Coulomb-blockade systems in the limit of short measuring-time intervals. This limit is particularly suited to identify correlations among tunneling events, but only when analyzing…

介观与纳米尺度物理 · 物理学 2016-09-27 Philipp Stegmann , Jürgen König

Destructive interference of single-electron tunneling between three quantum dots can trap an electron in a coherent superposition of charge on two of the dots. Coupling to external charges causes decoherence of this superposition, and in…

介观与纳米尺度物理 · 物理学 2007-06-13 C. W. Groth , B. Michaelis , C. W. J. Beenakker

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

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 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 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 observe individual tunnel events of a single electron between a quantum dot and a reservoir, using a nearby quantum point contact (QPC) as a charge meter. The QPC is capacitively coupled to the dot, and the QPC conductance changes by…

介观与纳米尺度物理 · 物理学 2009-11-10 L. M. K. Vandersypen , J. M. Elzerman , R. N. Schouten , L. H. Willems van Beveren , R. Hanson , L. P. Kouwenhoven

We present measurements of the fourth and fifth cumulants of the distribution of transmitted charge in a tunable quantum dot. We investigate how the measured statistics is influenced by the finite bandwidth of the detector and by the finite…

介观与纳米尺度物理 · 物理学 2015-06-25 S. Gustavsson , R. Leturcq , T. Ihn , K. Ensslin , M. Reinwald , W. Wegscheider

Manifestations of quantum coherence in the electronic conductance through nearly closed quantum dots in the Coulomb blockade regime are addressed. We show that quantum coherent tunneling processes explain some puzzling statistical features…

介观与纳米尺度物理 · 物理学 2015-05-26 L. E. F. Foa Torres , C. H. Lewenkopf , H. M. Pastawski

We present measurements on a quantum dot and a nearby, capacitively coupled, quantum point contact used as a charge detector. With the dot being weakly coupled to only a single reservoir, the transfer of individual electrons onto and off…

介观与纳米尺度物理 · 物理学 2009-11-10 R. Schleser , E. Ruh , T. Ihn , K. Ensslin , D. C. Driscoll , A. C. Gossard

Full counting statistics concerns the stochastic transport of electrons in mesoscopic structures. Recently it has been shown that the charge transport statistics for non-interacting electrons in a two-terminal system is always generalized…

介观与纳米尺度物理 · 物理学 2011-03-04 Dania Kambly , Christian Flindt , Markus Büttiker

We have measured the full counting statistics (FCS) of current fluctuations in a semiconductor quantum dot (QD) by real-time detection of single electron tunneling with a quantum point contact (QPC). This method gives direct access to the…

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

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 a quantum dot system whose charge fluctuations are monitored by a quantum point contact allowing for the detection of both charge and transferred heat statistics. Our system consists of two nearby conductors that exchange energy…

介观与纳米尺度物理 · 物理学 2013-12-24 Rafael Sánchez , Markus Büttiker
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