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Building Blocks for Integrated Homodyne Detection with Superconducting Nanowire Single-Photon Detectors / vorgelegt von Maximilian Protte. Paderborn, 2023
Inhalt
Summary
Zusammenfassung
Introduction
The Transition from Strong-Field Homodyne Detection to Weak-Field Homodyne Detection
Integrating a Homodyne Detector
Development of Integrated Components in Lithium Niobate
Waveguiding in Lithium Niobate
Background
Fabrication with Direct Laser Lithography
Fabrication of Titanium In-Diffused Waveguides
Fabrication of Passive Components
Nonlinear Processes in Lithium Niobate
Nonlinear Material Polarization
Second Harmonic Generation and its Phase Matching in Lithium Niobate
Fabrication of Periodically Poled Lithium Niobate
Nonlinear Characterization of Periodically Poled Lithium Niobate
Electro-Optical Modulation
Background
Fabrication of Electrode Structures
Characterization of the Polarization Converter
Integrating Single-Photon Detectors on Lithium Niobate
Basics of Superconducting Nanowire Single-Photon Detectors
Mode Manipulation in Ti:LN with Silicon Tapers
Simulation of Silicon Tapers
Fabrication of Silicon Tapers
Mode Imaging of Silicon Tapers
Realizing Micron-wide SNSPDs on Silicon
Fabrication of Micron-wide SNSPDs with Direct Laser Lithography
Experimental Testing of Micron-Wide SNSPDs
Micron-wide SNSPDs on z-cut Lithium Niobate
Coating with Carbon to Overcome Pyroelectric Damage
Characterizing Indium Tin Oxide as a Conductive Layer
Integrated Homodyne Detection with SNSPDs
A Brief Introduction to Homodyne Detection
Presenting the Concept Behind the Homodyning Experiment
Experimental Characterization of Homodyne Detection with SNSPDs
Interference Visibility
Linearity and Shot-Noise Limit
Phase-Dependent Loss
Conclusion and Outlook
Bibliography
Appendix
Publications
Preprints
Conference Contributions
Homodyne-Chip Layout
Variance of a Coherent State and Vacuum State
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