Accueil >
Production scientifique
|
|
Quantum Computing: a View from the Enemy Camp 
Auteur(s): Dyakonov M.
(Article) Publié:
Optics And Spectroscopy, vol. 95 p.261-267 (2003)
Texte intégral en Openaccess : 
Ref HAL: hal-00324191_v1
Ref Arxiv: cond-mat/0110326
DOI: 10.1134/1.1604434
WoS: 000185694100014
Ref. & Cit.: NASA ADS
Exporter : BibTex | endNote
3 Citations
Résumé: Quantum computing relies on processing of information within a quantum system with many continuous degrees of freedom. The practical implementation of this idea requires complete control over all of the 2n independent amplitudes of a many-particle wave function, where n>1000. The principles of quantum computing are discussed from the practical point of view, with the conclusion that a working device cannot be built in the foreseeable future.
Commentaires: Serge Luryi (Editor), Jimmy Xu (Editor), Alex Zaslavsky (Editor) ISBN: 0-471-21247-4 (September 2002, Wiley-IEEE Press)pp.307-318 2002, Wiley Interscience. We reproduce the text of the report delivered by the author at the symposium ?Future Trends in Microelectronics: The Nano Millenium,? June 25?29, 2002, ille de Bendor, France. Published with permission from Wiley Interscience.
|
|
|
|
Classical mechanism for negative magnetoresistance in two dimensions
Auteur(s): Dmitriev A., Dyakonov M., Jullien R.
(Article) Publié:
Physical Review B, vol. 64 p.233321- (2001)
Texte intégral en Openaccess :
Ref HAL: hal-00176754_v1
Ref Arxiv: cond-mat/0103490
DOI: 10.1103/PhysRevB.64.233321
WoS: 000172867900038
Ref. & Cit.: NASA ADS
Exporter : BibTex | endNote
53 Citations
Résumé: The classical two-dimensional problem of non-interacting electrons scattered by short-range impurity centers in the presence of magnetic field is investigated both analytically and numerically. A strong magnetoresistance exists in such a system, due to freely circling electrons, which are not taken into account by the Boltzmann-Drude approach. A parabolic magnetoresistance is found at low fields.
Commentaires: 4 pages, 3 figures
|
|
|
|
Electron and Hole Spin Relaxation in Modulation-spaced CdMnTe Quantum Wells
Auteur(s): Dyakonov M.
(Article) Publié:
Physical Review B, vol. 64 p.085331- (2001)
DOI: 10.1103/PhysRevB.64.085331
WoS: 000170623000080
65 Citations
Résumé: We report on the electron and hole spin relaxation times in n-type and p-type CdMnTe quantum wells with nonmagnetic barriers measured via the time-resolved magneto-optical Kerr effect in a pump-probe experiment. In addition to the decay of the Kerr effect at short pump-probe delays, we show that the hole spin relaxation time may be also estimated from a phase shift induced during the coherent rotation of the Mn spins. The variations of the spin relaxation times are studied as a function of Mn concentration, doping level, and magnetic field applied parallel to the quantum well plane. The results show that the electron spin relaxation is dominated by the exchange scattering with the Mn ions in the quantum well, and good agreement with theory is obtained provided exciton effects are included. Relatively slow hole spin relaxation is observed in the p-type samples (hole spin lifetime up to 32 ps) as compared to published values for similar diluted magnetic II-VI heterostructures.
|
|
|
|
Plasma Wave Electronics for Terahertz Applications
Auteur(s): Dyakonov M., Jian-Qiang Lu , Shur M.S.
Conference: (, , 0000)
DOI: 10.1109/MWSYM.1999.779540
Résumé: Plasma waves propagating in a short-channel High Electron Mobility Transistor (HEMT) have a resonant response to electromagnetic radiation. Experimentally, we have demonstrated the detection of the terahertz radiation by an AlGaAs/GaAs HEMT. In this paper, we review recent theoretical and experimental results dealing with plasma waves in HEMTs and their applications for sources and detectors operating in millimeter and submillimeter range.
Commentaires: R.E. Miles (Editor), P. Harrison (Editor), D. Lippens (Editor)
Springer (July 1, 2001) pp.187-207
ISBN: 0792370961
|
 |
Current State of the Theory of the Fractional Quantum Hall Effect
Auteur(s): Dyakonov M.
Conference: (, , 0000)
|
