Generation of few-photon states with excitons and biexcitons in semiconductor quantum dots / David Bauch ; Examination Committee: Prof. Dr. Stefan Schumacher, Prof. Dr. Jens Förstner, Prof. Dr. Klaus D. Jöns, Dr. Hendrik Rose. Paderborn, 2024
Inhalt
- Introduction
- Photons as Quantum Information Carriers
- Electronic States in Semiconductor Quantum Dots
- The Quantum Resonator
- Outline and Current Points of Interest
- Theoretical Framework
- Hamiltonian and Time Evolution
- Von Neumann Equation of Motion
- Open Quantum System - Environmental Coupling
- Interaction Picture Transformation
- External Oscillator - Laser Driving
- Electron Phonon Coupling
- Phonon Spectral Density
- Polaron Master Equation
- Path Integral Method: Augmented Density Matrix Formalism
- Phonon Assisted Processes
- Photon Quantum Properties and Statistics
- Quantum Dot - Photon Physics
- Enhancing Quantum Dot Excitation Using the Quantum Confined Stark Effect
- Biexciton Baseline
- Exciting the Quantum Dot States
- Quantum Confined Stark Shift of the Resonances
- Optical Stark Shift and SUPER excitation
- Quantum Correlations
- Concluding the Stark Shifted Excitation
- Generating Indistinguishable and Simultaneously Entangled Photons
- Quantum Dot - Reflector Structure
- Quantum Properties
- Finding Optimal Purcell Enhancements through Temperature Optimization
- Optimal Case with Excitation of the States
- Concluding the Purcell enhanced two photon emission
- Time-Bin Quantum Correlations in Deterministic Photonic Cluster States
- Graph States
- Time Bin Entanglement
- Extended System
- Linear Cluster State Emission Protocol
- Finding Optimal Rotations
- QuBit Correlations
- Concluding the Time Bin Entangled Photon Generation
- Conclusion and Outlook
- Appendix
- Optical Activity of Excitons
- Details on the Concurrence
- Loss Function for the Maxwell Optimizer
- Numerical Implementation
- Bibliography