Sökning: "quantum calculations"

Visar resultat 1 - 5 av 70 uppsatser innehållade orden quantum calculations.

1. 1. A C++ Matrix library for computing the Gateaux derivative of the Fermi-Dirac operator

   Kandidat-uppsats, Uppsala universitet/Avdelningen för beräkningsvetenskap

   Författare :William Samuelsson; [2023]
   Nyckelord :C ; Quantum Chemistry; Matrix functions;

   Sammanfattning : Computing the Fermi-Dirac operator is done through recursive polynomial expansions, using the SP2 and SP2 Acc algorithms. The Gateaux derivative is computed for both schemes by mapping the zeroth and first order matrices onto a block upper triangular matrix, which is implemented in Python using Numpy arrays to store full matrices and in C++ by first constructing a basic matrix library to use as blocks in a later created block upper triangular matrix library which only directly references two blocks in a 2 x 2 block matrix. LÄS MER

3. 2. Supersymmetry in Quantum Mechanics

   Kandidat-uppsats, Uppsala universitet/Institutionen för materialvetenskap

   Författare :Ludvig Chen; [2023]
   Nyckelord :Quantum Mechanics; Supersymmetry; Witten Index; Morse Theory;

   Sammanfattning : The introduction of supersymmetry has led to great progress in the study of quantum field theories. Notably, with supersymmetry, properties of a quantum field theory can be computed with higher precision than what would otherwise be possible. In this project, we investigate supersymmetry in the context of quantum mechanics. LÄS MER

4. 3. THE COUPLING OF A DOUBLE QUANTUM DOT TO MICROWAVE PHOTONS

   Kandidat-uppsats, Lunds universitet/Matematisk fysik; Lunds universitet/Fysiska institutionen

   Författare :Mohamed Abrash; [2023]
   Nyckelord :Quantum computing; Qubit; Double quantum dot DQD ; Microwave resonator; Quantum integrated circuits; Sweet spots; Hybrid quantum circuits.; Physics and Astronomy;

   Sammanfattning : In this study, we derive a mathematical description of a double quantum dot (DQD) embedded in a microwave resonator starting from classical electrostatics. DQDs are a promising platform for building quantum computers and have important applications in quantum sensing and the study of light-matter interactions. LÄS MER

5. 4. Error propagation in nuclear models

   Kandidat-uppsats, Lunds universitet/Matematisk fysik; Lunds universitet/Fysiska institutionen

   Författare :Artis Mucenieks; [2023]
   Nyckelord :Physics and Astronomy;

   Sammanfattning : In this thesis we perform error analysis of a nuclear model based on density-functional theory developed in Lund. The Lund model allows us to perform calculations of nuclear spectra more efficiently by constructing a simple effective Hamiltonian reproducing the quadrupole deformation and pairing interaction strength parameters of a spherical Hartree-Fock reference functional. LÄS MER

7. 5. Quantum Transport in Topological Insulator Nanowires

   Master-uppsats, KTH/Fysik

   Författare :Sergi Pradas Rodriguez; [2023]
   Nyckelord :quantum transport; topological insulators; nanowires; numerical analysis; Kwant; etc.; kvanttransport; topologiska isolatorer; nanotrådar; numerisk analys; Kvant; etc.;

   Sammanfattning : Three-dimensional topological insulators are materials that have a bulk band gap like a traditional insulator, but which hold topologically protected conducting surface states. In this thesis we present a numerical analysis of the surface states of topological insulator nanowires in the tight-binding approximation. LÄS MER