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Noise in coulomb blockaded quantum dots and kondo systems

By Daniel Mikael Larsson

Abstract

In this thesis we study the noise in Coulomb blockaded quantum dots in the vicinity of the peak of conductance in a full quantum treatment using the Keldysh technique. In previous work on this system, the emphasis have been on master equation approaches in the shot noise regime. In the vicinity of the peak of conductance it remained unclear if this classical approach is valid since we have two strongly interacting charging states and a full quantum treatment is necessary. Using our full, quantum mechanical approach we find an analytical expression for the noise valid from the low bias regime all the way to the shot noise regime valid in the vicinity of peak of conductance. In the shot noise regime we recover the result from the master equation approach

Topics: Q Science (General), QC Physics
Year: 2011
OAI identifier: oai:etheses.bham.ac.uk:1535

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