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相关论文: Shot noise in generic quantum dots: crossover from…

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We investigate the diffusive behavior of a quantum particle driven by a correlated Gaussian noise. We derive the analytical solution of the joint probability density function and obtain explicit expressions for the mean square momentum and…

量子物理 · 物理学 2026-03-10 Yun Jeong Kang , Sung Kyu Seo , Kyungsik Kim

The low-frequency shot noise properties of two electrostatically coupled semiconductor quantum dot states which are connected to emitter/collector contacts are studied. A master equation approach is used to analyze the bias voltage…

介观与纳米尺度物理 · 物理学 2009-11-10 G. Kiesslich , A. Wacker , E. Schoell

A self-consistent theory of shot noise in ballistic two-terminal conductors under the action of long-range Coulomb correlations is presented. Analytical formulas for the electron distribution function and its fluctuation along the…

介观与纳米尺度物理 · 物理学 2009-10-31 O. M. Bulashenko , J. M. Rubi , V. A. Kochelap

A semiclassical theory of the low frequency shot noise in ferromagnet - normal metal systems is formulated. Non-collinear magnetization directions of the ferromagnetic leads, arbitrary junctions and the elastic and inelastic scattering…

介观与纳米尺度物理 · 物理学 2009-11-07 Yaroslav Tserkovnyak , Arne Brataas

A stochastic discrete drift-diffusion model is proposed to account for the effects of shot noise in weakly coupled, highly doped semiconductor superlattices. Their current-voltage characteristics consist of a number stable multistable…

介观与纳米尺度物理 · 物理学 2009-11-07 L. L. Bonilla , O. Sanchez , J. Soler

We study a two-level quantum dot embedded in a phonon bath and irradiated by a time-dependent ac field and develope a method that allows us to extract simultaneously the full counting statistics of the electronic tunneling and relaxation…

介观与纳米尺度物理 · 物理学 2007-05-23 Rafael Sánchez , Gloria Platero , Tobias Brandes

Quantum noise in a model of singly resonant frequency doubling including phase mismatch and driving in the harmonic mode is analyzed. The general formulae about the fixed points and their stability as well as the squeezing spectra…

量子物理 · 物理学 2007-05-23 C. Cabrillo , J. L. Roldan , P. Garcia-Fernandez

Quantum dots (QDs) investigated through electron transport measurements often exhibit varying, state-dependent tunnel couplings to the leads. Under specific conditions, weakly coupled states can result in a strong suppression of the…

介观与纳米尺度物理 · 物理学 2018-03-07 M. -C. Harabula , V. Ranjan , R. Haller , G. Fülöp , C. Schönenberger

Experimental investigations of current shot noise in quantum point contacts show a reduction of the noise near the 0.7 anomaly. It is demonstrated that such a reduction naturally arises in a model proposed recently to explain the…

介观与纳米尺度物理 · 物理学 2009-11-11 A. Golub , T. Aono , Yigal Meir

The shot noise of the current through a single electron transistor (SET), coupled capacitively with an electronic box, is calculated, using the master equation approach. We show that the noise may be sub-Poissonian or strongly…

介观与纳米尺度物理 · 物理学 2013-06-11 V. Hung Nguyen , V. Lien Nguyen

Conductance and shot noise of an open cavity with diffusive boundary scattering are calculated within the Boltzmann-Langevin approach. In particular, conductance contains a non-universal geometric contribution, originating from the presence…

介观与纳米尺度物理 · 物理学 2009-10-31 Ya. M. Blanter , E. V. Sukhorukov

We study the noise of the cotunneling current through one or several tunnel-coupled quantum dots in the Coulomb blockade regime. The various regimes of weak and strong, elastic and inelastic cotunneling are analyzed for quantum-dot systems…

介观与纳米尺度物理 · 物理学 2009-10-31 Eugene V. Sukhorukov , Guido Burkard , Daniel Loss

We present a theoretical investigation of shot-noise suppression due to long-range Coulomb interaction in nondegenerate diffusive conductors. Calculations make use of an ensemble Monte Carlo simulator self-consistently coupled with a…

介观与纳米尺度物理 · 物理学 2009-10-31 T. Gonzalez , J. Mateos , D. Pardo , O. M. Bulashenko , L. Reggiani

We study the crossover between thermal and shot-noise power in a chaotic quantum dot in the presence of non-ideal contacts at finite temperature. The result explicitly demonstrates that the temperature affect the suppression-amplification…

介观与纳米尺度物理 · 物理学 2011-03-21 A. L. R. Barbosa , J. G. G. S. Ramos , D. Bazeia

We present a semiclassical theory of shot noise in diffusive superconductor - normal metal contacts. At subgap voltages, we reproduce the doubling of shot noise with respect to conventional normal-metal contacts, which is interpreted in…

介观与纳米尺度物理 · 物理学 2009-10-31 K. E. Nagaev , M. Buttiker

Strange metal behavior has been observed in an expanding list of quantum materials, with heavy fermion metals serving as a prototype setting. Among the intriguing questions is the nature of charge carriers; there is an increasing…

强关联电子 · 物理学 2025-07-02 Yiming Wang , Shouvik Sur , Fang Xie , Haoyu Hu , Silke Paschen , Douglas Natelson , Qimiao Si

We consider the effect of classical stochastic noise on control laser pulses used in a scheme for transferring quantum information between atoms, or quantum dots, in separate optical cavities via an optical connection between cavities. We…

量子物理 · 物理学 2009-11-07 T. M. Stace , C. H. W. Barnes

In this work - the second of a pair of articles - we consider transport through spatially symmetric quantum dots with leads whose widths or positions do not obey the spatial symmetry. We use the semiclassical theory of transport to find the…

介观与纳米尺度物理 · 物理学 2009-11-26 Robert S. Whitney , Henning Schomerus , Marten Kopp

We study shot noise in the current of quantum dots whose low-energy behaviour corresponds to an SU(N) Kondo model, focusing on the case N=4 relevant to carbon nanotube dots. For general N, two-particle Fermi liquid interactions have two…

介观与纳米尺度物理 · 物理学 2008-01-24 P. Vitushinsky , A. A. Clerk , K. Le Hur

We work out a theory of shot noise in a special case. This is a noise of the Coulomb drag current excited under the ballistic transport regime in a one-dimensional nanowire by a ballistic non-Ohmic current in a nearby parallel nanowire. We…

介观与纳米尺度物理 · 物理学 2009-10-31 V. L. Gurevich , M. I. Muradov