نتایج جستجو برای: double quantum dot

تعداد نتایج: 541709  

Journal: :The Journal of chemical physics 2010
S Yu Kruchinin A V Fedorov A V Baranov T S Perova K Berwick

We present a theoretical description of the first-order scattering of interacting electrons and holes in a double quantum dot. Assuming infinitely high walls, strong confinement, and a two-band approximation, we derive general expressions for the two-particle matrix elements of the screened Coulomb potential. We also determine the selection rules for different scattering channels and consider s...

1999
Alexander N. Korotkov

We consider the continuous measurement of a double quantum dot by a weakly coupled detector ~tunnel point contact nearby!. While the conventional approach describes the gradual system decoherence due to the measurement, we study the situation when the detector output is explicitly recorded that leads to the opposite effect: gradual purification of the double-dot density matrix. The nonlinear La...

2014
R. A. Lai H. O. H. Churchill C. M. Marcus

We demonstrate gate control of the electronic g tensor in single and double quantum dots formed along a bend in a carbon nanotube. From the dependence of the single-dot excitation spectrum on magnetic field magnitude and direction, we extract spin-orbit coupling, valley coupling, and spin and orbital magnetic moments. Gate control of the g tensor is measured using the splitting of the Kondo pea...

2007
Teemu Pohjola

We study electron transport through single and double quantum dots with large level spacing and charging energy. Motivated by recent experiments we focus on linear and nonlinear response of two model systems: a single dot with two levels and a capacitively coupled double dot. At low temperature and strong coupling to the leads, quantum uctuations and Kondo-like many-body eeects become important...

Journal: :Physical review letters 2012
S Nadj-Perge V S Pribiag J W G van den Berg K Zuo S R Plissard E P A M Bakkers S M Frolov L P Kouwenhoven

A double quantum dot in the few-electron regime is achieved using local gating in an InSb nanowire. The spectrum of two-electron eigenstates is investigated using electric dipole spin resonance. Singlet-triplet level repulsion caused by spin-orbit interaction is observed. The size and the anisotropy of singlet-triplet repulsion are used to determine the magnitude and the orientation of the spin...

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...

Journal: :Nano letters 2006
Sami Sapmaz Carola Meyer Piotr Beliczynski Pablo Jarillo-Herrero Leo P Kouwenhoven

We report on low-temperature measurements in a fully tunable carbon nanotube double quantum dot. A new fabrication technique has been used for the top-gates in order to avoid covering the whole nanotube with an oxide layer as in previous experiments. The top-gates allow us to form single dots and control the coupling between them, and we observe 4-fold shell filling. We perform inelastic transp...

2014
M. R. Delbecq T. Nakajima T. Otsuka S. Amaha J. D. Watson M. J. Manfra S. Tarucha

Articles you may be interested in Creation of charged excitons with two-color excitation method and initialization of electron spin qubit in quantum dots Appl. Controlled decoherence of a charge qubit in a double quantum dot

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