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Integrated single photon sources : development to benchmarking / by Nicola Montaut. Paderborn, 2019
Inhalt
Summary
High-efficiency fibre-pigtailed heralded source of single photons
Introduction
Foundation
Nonlinearity in materials
Lithium niobate waveguides
Waveguide model - indiffused structures
Coupled wave equations
Quasi-phasematching
Spontaneous parametric down conversion
Theoretical background
SPDC in LN waveguides
Characterisation of single photon sources
Superconducting nanowire detectors
Quantum characterisation methods of photon sources
Device development
Plug-and-play device - the design
Fabrication of titanium indiffused waveguides in lithium niobate
Periodic poling through domain inversion
Classical characterisation
Loss measurement
Mode size measurement
Second harmonic generation (SHG)
End face coatings
Fibre pigtailing and packaging
Quantum characterisation
Heralding efficiency
Brightness and non-classicality
Spectral measurement
Unheralded g(2)(0)
Heralded g(2)(0)
Hong-Ou-Mandel measurement
Spectral filtering
Fundamentals on filtering
Heralding efficiency and reduced-state spectral purity
Future work
Pulsed vs CW measurements
Integrated structures
Cold temperature devices
Conclusion
Compressive sensing for characterising high-dimensional states
Introduction
Basics
Direct measurement or raster-scan
Compressive sensing
SPDC mode reconstruction
Spatial reconstruction of SPDC states
Spatial mode reconstruction using the direct measurement technique
Spatial mode reconstruction using compressive sensing
Spatio-spectral mode reconstruction of SPDC states
Conclusion
Acknowledgements
Major author contributions
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