Dissertation/Thesis Abstract

The author has requested that access to this graduate work be delayed until 2019-10-27. After this date, this graduate work will be available on an open access basis.
Simulations of Open Ballistic Quantum Systems and Semiclassical Semiconductor Superlattices
by Essen, Jonathan, Ph.D., University of California, Santa Barbara, 2017, 97; 10618311
Abstract (Summary)

The tunable antenna-coupled intersubband terahertz (TACIT) sensor is a heterodyne mixer based on the coupling of intersubband absorption with the sheet resistivity of doped GaAs/AlGaAs quantum wells. A theoretical treatment of this device as an open quantum system operating at the ballistic limit leads to the development of perfectly matched layers for the position-space Liouville-von Neumann equation.

Meanwhile, the nonlinear dynamics of weakly-coupled, doped GaAs/AlGaAs superlattices in the sequential-tunneling regime are theoretically characterized by computing the Poincar\'e map of a self-consistent, semiclassical resonant tunneling model. Applied to shorter superlattices at higher bias voltages, period-doubling cascades to high-frequency chaos are observed, and their robustness to variations in the design parameters is explored.

Indexing (document details)
Advisor: Sherwin, Mark, Birnir, Björn
Commitee: Nayak, Chetan, Srednicki, Mark
School: University of California, Santa Barbara
Department: Physics
School Location: United States -- California
Source: DAI-B 79/02(E), Dissertation Abstracts International
Subjects: Quantum physics, Physics, Nanotechnology
Keywords: Tunable antenna-coupled intersubband terahertz
Publication Number: 10618311
ISBN: 9780355429190
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