Sökning: "global quantum"
Visar resultat 1 - 5 av 16 uppsatser innehållade orden global quantum.
1. On quantum systems and the measurement problem
Master-uppsats, Stockholms universitet/FysikumSammanfattning : We focus on the Tensor Product Structure (TPS) of the Hilbert space and the fact that a choice in the TPS has an impact on the representation of the studied quantum system. We define the measurement problem in quantum mechanics and present some theories about quantum mechanics, each of them highlighting a different approach to quantum measurements. LÄS MER
2. The Impact of Swampland Conjectures
Master-uppsats, Uppsala universitet/Teoretisk fysikSammanfattning : The Swampland program is way of sorting effective field theories based on conjectures of how an effective field theory consistent with quantum gravity should look like. In this thesis we take a closer look at the No Global Symmetries Conjecture, the Weak Gravity Conjecture, the de Sitter Conjecture and the Trans-Planckian Censorship Conjecture. LÄS MER
3. Comparing Quantum Annealing and Simulated Annealing when Solving the Graph Coloring Problem
Kandidat-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)Sammanfattning : Quantum annealing (QA) is an optimization process in quantum computing similar to the probabilistic metaheuristic simulated annealing (SA). The QA process involves encoding an optimization problem into an energy landscape, which it then traverses in search for the point of minimal energy representing the global optimal state. LÄS MER
4. Modulation of the optical properties of quantum dots by surface acoustic waves
Master-uppsats, KTH/Tillämpad fysikSammanfattning : Semiconductor quantum dots (QDs) are considered to be a crucial part of future quantum technologies due to their enormous potential as efficient sources of single and indistinguishable photons. Single photons are necessary to transport quantum information over large distances through the existing global fibre optic network. LÄS MER
5. Detective Quantum Efficiency in the Image Domain
Master-uppsats, KTH/FysikSammanfattning : We investigate the signal and noise transform characteristics from the projection domain to the image domain in a linear systems theory framework and predictions of the DQE within this framework are made. A simulation study of a photon counting silicon detector is made from which the energy information is used in order to produce synthetic monoenergetic images. LÄS MER