CORRELATION AML COHERENCE IN QUANTUM-DOT CELLULAR AUTOMATA

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" CORRELATION AML COHERENCE IN QUANTUM-DOT CELLULAR AUTOMATA "

Document Type	:	Latin Dissertation
Language of Document	:	English
Record Number	:	151449
Doc. No	:	ET23241
Main Entry	:	Gdza Toth, M. S .
Title Proper	:	CORRELATION AML COHERENCE IN QUANTUM-DOT CELLULAR AUTOMATA
Note	:	This document is digital این مدرک بصورت الکترونیکی می باشد
Abstract	:	In this thesis we investigate the rote of correlation and coherence in two possiblerealizations of Quantum-dot Cellular Automata (QCA): realizations as a semiconductormulti-quantum-dot structure and as a metal-island single electron tunneIing circuit. Thetwo are different from the point of view of the underlying physics. The metal islandcircuits are very strongly connected to the heat bath and they can be modeled semi-classically, using classical quantities such as charging energy and capacitance. To modelthe semiconductor realization, a quantum mechanical treatment is necessary. The quantummechanical state of the cells evolves coherently, at least for time scales smaller than thedecoherence time. In the first part of the thesis the theory of metal island circuits is used todesign a cell structure permitting adiabatic clocking. It is also used to analyze theconductance suppression of coupled double-dots and reproduce the correspondingexperimental results fiom the theory by modeling coherent electron motion inside the....-....,....-...,..tested for theQ1 PC1 bus cardBoth these projects mere sofixare des elopment efforts tonards contributing to dlfferentaspects of Roboucs and lZ1echatronics projects m the Controls and Roboucs Group..
Subject	:	Electericl tess
	:	برق
electronic file name	:	TL46477.pdf
Title and statement of responsibility and	:	CORRELATION AML COHERENCE IN QUANTUM-DOT CELLULAR AUTOMATA [Thesis]