Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 77 for “"Floquet"”.
-
Floquet Theory on Banach Space
<p>In this thesis we study Floquet theory on a Banach space. We are concerned about the linear differential equation of the form: <em>y'</em>(<em>t</em>) = <em>A</em>(<em>t</em>)<em>y</em>(<em>t</em>), where t ∈ R, <em>y</em>(<em>t</em>) is a function with values in a Banach space <em>X</em>, and …
-
ADIABATIC PUMPING IN THE FLOQUET TOPOLOGICAL SYSTEMS
… counterparts have emerged in the time periodic(Floquet) quantum system. It is natural to ask: Can we use the Floquet topological systems to perform quantum information tasks which can benefit from the topological robustness? Can we use the Floquet formalism to engineer the band topology of the …
-
Simulation algorithms, Floquet phenomena and superconducting qubits
… circuits are theoretically modeled, as well as Floquet physics. After a primer on numerical analysis of these systems, we conclude with a discussion of logical errors in physical qubits. In Chapter 2 we present the Floquet fluxonium molecule, a new highly coherent superconducting qubit which is …
-
Floquet-Bloch manipulation of correlated topological materials
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-19 without embargo terms
-
Reduction of periodic systems with partial Floquet transforms
… to address this need by investigating partial Floquet transformations, which serve to simultaneously remove the time dependence of the system and produce effec- tive reduced order models. In this thesis we describe the time-periodic analogs of important concepts for time invariant model …
-
Floquet theory of electronic stopping processes of projectiles in solids
… periodicity, which allows a treatment based on Floquet theory for time-periodic systems. Floquet theory allows to find the solutions of time-periodic Hamiltonians through the same techniques used in time-independent problems: this provides the new framework with an intrinsic advantage over the …
-
High-efficiency, low-loss Floquet Josephson Traveling Wave Parametric Amplifier
… by adiabatically transforming the input modes to Floquet modes of the system within the device. In this thesis, we experimentally demonstrate the first Floquet-mode travelingwave parametric amplifier (Floquet TWPA). Fabricated in a superconducting qubit process, this Floquet TWPA achieves minimal …
-
Floquet-Wave-Based Analysis of Transient Scattering From Doubly Periodic Structures
… structures. This thesis then focuses on a Floquet-wave-based scheme to relieve this computational burden by using blocked fast Fourier transform based accelerators to efficiently evaluate transient Floquet-wave decomposed electromagnetic fields generated by doubly periodic and temporally …
-
Analysis of infinite arrays of arbitrarily shaped planar radiating elements using a Floquet mode based Method of Moments approach
… antenna array are included in the analysis by a Floquet mode based Green's function used in the Method of Moments analysis. This characterization technique has been implemented in the computational electromagnetics code ASIA (Analysis Software for Infinite Arrays), The analysis approach presented …
-
Phase transitions in quasiperiodic and driven optical lattices
… with a novel lattice geometry, and the use of Floquet driving to engineer behaviours qualitatively different from static systems. In particular I will present our work using periodic driving to make a continuous quantum phase transition become discontinuous, which to our knowledge has never …
-
Dinâmica e controle de caos de um sistema pendular com memória de forma
… The stability of the orbits is identified using Floquet multipliers. Discussions about sub-harmonic orbits stability and the relation between energy consumption and the controller’s parameters are made. The thermal controller uses the thermomechanical behaviour of the SMA for actuation. The …
-
Light-induced States and Phase Transitions in Quantum Materials investigated by Photoemission Spectroscopy and Epitaxial Synthesis
… delve into three compelling studies: (1) Floquet-Bloch states, photon-dressed Bloch states, were investigated in graphene. These states are generated by a time-periodic potential of light, closely related to the topic of Floquet engineering. (2) A light-induced insulator-to-metal …
-
Secondary instabilities of boundary layers
… using the resonant triad model and the Floquet model. The primary wave is taken in the form of a two-dimensional (2-0) Tollmien-Schlichting (T-S) wave. The subharmonic wave is taken in the form of a three-dimensional (3-D) wave. Results from both models are presented and compared with …
-
The Quest for Ideal Quantum Amplifiers
… same time. We invent a new class of amplifiers, Floquet-mode traveling-wave parametric amplifiers (TWPAs), that solve the long-standing performance-scalability tradeoff and theoretically offer broadband directional amplification with over 99.9% quantum efficiency across a wide bandwidth. …
-
Finescale abyssal turbulence: sources and modeling
… through direct numerical simulations (DNS) and Floquet analysis. Turbulence is sustained throughout the tidal period in the DNS on extra-critical slopes characterized by small slope Burger numbers, leading to the formation of turbulent stratified Stokes-Ekman layers. Floquet analysis suggests …
-
New Approach to finding Active Element Patterns for Large Arrays
… large phased array antennas, was created using Floquet's theorem. The classic approach to finding active-element patterns uses a full array simulation that can become slow and produce patterns that are specific to certain elements in the array, though basically identical away from the array …
-
Spectra of Periodic Schrödinger Operators on the Octagonal Lattice
… operator on an octagonal lattice using the Floquet-Bloch transform of the Laplacian. We will first consider the spectrum of the Laplacian in detail and prove various properties thereof, including spectral-band limits and locations of singularities. In addition, we will prove that Schrödinger …
-
Studies on secondary instabilities
… of a spectral collocation method Following Floquet theory, previous analysis looked for subharmonic (wavelength 2 λ) and fundamental (wavelength λ) types of solutions. We extend the Floquet theory to solutions having arbitrary wavelengths, hence including the previous solutions as special …
-
Laser-molecule Interactions And The Effects Of Permanent Dipoles
… developed and applied to specific problems. The Floquet technique for the treatment of periodic Hamiltonians is extended to accommodate the interaction of a molecule with two CW lasers.;The one-field RWA results are used to predict and interpret the effects of permanent dipoles on the temporal …
Page 1 of 4