9 papers
Lossy SU(1,1) interferometers in the single-photon-pair regime
Matteo Santandrea, Kai-Hong Luo, Michael Stefszky +3
The success of quantum technologies is intimately connected to the possibility of using them in real-world applications. To this aim, we study the sensing capabilities of quantum S…
Quantum optical coherence: From linear to nonlinear interferometers
K. -H. Luo, M. Santandrea, M. Stefszky +6
Interferometers provide a highly sensitive means to investigate and exploit the coherence properties of light in metrology applications. However, interferometers come in various fo…
Spectrally multimode integrated SU(1,1) interferometer
Alessandro Ferreri, Matteo Santandrea, Michael Stefszky +4
Nonlinear SU(1,1) interferometers are fruitful and promising tools for spectral engineering and precise measurements with phase sensitivity below the classical bound. Such interfer…
Waveguide Resonator with Integrated Phase Modulator for Second Harmonic Generation
Michael Stefszky, Matteo Santandrea, Felix vom Bruch +6
We report second harmonic generation from a titanium indiffused lithium niobate waveguide resonator device whose cavity length is locked to the fundamental pump laser using an on-c…
General analytic theory of classical collinear three wave mixing in a monolithic cavity
Matteo Santandrea, Michael Stefszky, Christine Silberhorn
Integrated, monolithic nonlinear cavities are of high interest in both classical and quantum optics experiments for their high efficiency and stability. However, a general, analyti…
An interferometric method for determining the losses of spatially multi-mode nonlinear waveguides based on second harmonic generation
Matteo Santandrea, Michael Stefszky, Ganaël Roeland +1
The characterisation of loss in optical waveguides is essential in understanding the performance of these devices and their limitations. Whilst interferometric-based methods genera…