نتایج جستجو برای: tunnel injection quantum dot tiqd

تعداد نتایج: 497752  

Journal: :Physical review letters 2006
Alessandro Braggio Jürgen König Rosario Fazio

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 single-electron transistor to second order in the tunnel coupling, and discuss under which circumstances non-Markovian effects appear in the transport properties.

Journal: :Physical review letters 2005
Janine Splettstoesser Michele Governale Jürgen König Rosario Fazio

We present a general formalism to study adiabatic pumping through interacting quantum dots. We derive a formula that relates the pumped charge to the local, instantaneous Green's function of the dot. This formula is then applied to the infinite-U Anderson model for both weak and strong tunnel-coupling strengths.

Journal: :international journal of nanoscience and nanotechnology 2014
m. kianpour r. sabbaghi-nadooshan

application of quantum-dot is a promising technology for implementing digital systems at nano-scale.  quantum-dot cellular automata (qca) is a system with low power consumption and a potentially high density and regularity. also, qca supports the new devices with nanotechnology architecture. this technique works based on electron interactions inside quantum-dots leading to emergence of quantum ...

2015
M. R. Connolly A. Cresti J. P. Griffiths G. A. C. Jones K. L. Chiu C. G. Smith

Magnetic-field-induced charge redistribution in disordered graphene double quantum dots." Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. We have studied the trans...

2001
Angus MacKinnon Andrew D. Armour

We investigate the effect of quantisation of vibrational modes on a system in which the transport path is through a quantum dot mounted on a cantilever or spring such that tunnelling to and from the dot is modulated by the oscillation. We consider here the implications of quantum aspects of the motion. Peaks in the current voltage characteristic are observed which correspond to avoided level cr...

Journal: :Journal of physics. Condensed matter : an Institute of Physics journal 2009
H B Sun H M Wiseman

We propose a quantum trajectory analysis of a scheme to measure the states of a coupled-dot device (qubit) where there is a fluctuating energy gap Δ between the two states. The system consists of the qubit and a readout dot coupled to source and drain leads. The tunnel rate through the detector is conditioned by the occupation number of the nearer quantum dot (target) of the qubit and therefore...

H. Baghbani Rizi H. Hoseinkhani, M. A. Talebian Darzi, M. Abdollahi

In this research, the effect of the first order magnetic field on the ground-state of a centered hydrogenic donor impurity in a GaAs/AlAs spherical quantum dot has been calculated. The perturbation method has been used within the framework of effective mass approximation for these calculations. Overall, the analysis shows that a proper choice of quantum dot radius and magnetic field can signifi...

H. Baghbani Rizi H. Hoseinkhani, M. A. Talebian Darzi, M. Abdollahi

In this research, the effect of the first order magnetic field on the ground-state of a centered hydrogenic donor impurity in a GaAs/AlAs spherical quantum dot has been calculated. The perturbation method has been used within the framework of effective mass approximation for these calculations. Overall, the analysis shows that a proper choice of quantum dot radius and magnetic field can signifi...

Journal: :Science 2004
N Mason M J Biercuk C M Marcus

We have measured carbon nanotube quantum dots with multiple electrostatic gates and used the resulting enhanced control to investigate a nanotube double quantum dot. Transport measurements reveal honeycomb charge stability diagrams as a function of two nearly independent gate voltages. The device can be tuned from weak to strong interdot tunnel-coupling regimes, and the transparency of the lead...

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