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Your search keyword '"Lyanda-Geller, Y. B."' showing total 3 results
Start Over Author "Lyanda-Geller, Y. B." Publisher american institute of physics
3 results on '"Lyanda-Geller, Y. B."'

1. Observation of one-electron charge in an enhancement-mode InAs single-electron transistor at 4.2 K.

Author

Jones, G. M., Hu, B. H., Yang, C. H., Yang, M. J., and Lyanda-Geller, Y. B.

Subjects
ELECTRON paramagnetic resonance spectroscopy, ELECTRON work function, ELECTRON spectroscopy, TRANSISTORS, QUANTUM dots, QUANTUM electronics, ELECTRONICS
Abstract

We demonstrate experimentally single-electron quantum dots using a single-top-gate transistor configuration on a composite quantum well. The data indicate a 15 meV Coulomb charging energy and a 20 meV orbital energy spacing, which imply a quantum dot of 20 nm in diameter. Combining with the inherent advantage of a large electron g* factor in InAs, our demonstration is significant for a solid state implementation of a scalable quantum computing. [ABSTRACT FROM AUTHOR]

Published
2006
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2. Quantum steering of electron wave function in an InAs Y-branch switch.

Author

Jones, G. M., Yang, C. H., Yang, M. J., and Lyanda-Geller, Y. B.

Subjects
INDIUM, ARSENIC, SEMICONDUCTORS, ELECTRONS, TRANSISTORS, ELECTRONICS
Abstract

We report experimental results on gated Y-branch switches made from InAs ballistic electron waveguides. We demonstrate that gating modifies the electron wave functions as well as their interference pattern, resulting in anticorrelated oscillatory transconductances. Our data provide evidence of steering the electron wave function in a multichannel transistor structure. [ABSTRACT FROM AUTHOR]

Published
2005
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3. Strongly Tunable Coupling Between Quantum Dots.

Author

Lyanda-Geller, Y. B., Bacher, G., Reinecke, T. L., Welsch, M. K., Forchel, A., Becker, C. R., and Molenkamp, L.

Subjects
*QUANTUM dots, *QUANTUM electronics, *SEMICONDUCTORS, *MANGANESE, *IONS, *QUANTUM wells, *MAGNETIC fields
Abstract

The incorporation of Mn ions in one of the quantum dots (QD) results in markedly different spin splittings for states of single QD molecules fabricated from coupled quantum well structures of (Cd,Mn,Mg)Te alloy materials. By comparing the observed magnetic field dependence of the photoluminescence polarization with detailed calculations, we show that the coupling between the dots is coherent and is tunable with magnetic field. We show that spin splittings and g-factors of these coupled dots can be manipulated by orders of magnitude. We also develop an approach for the fast control of spin splittings in a QD with an electric field in these structures. © 2005 American Institute of Physics [ABSTRACT FROM AUTHOR]

Published
2005
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