Measurement of Ultrashort Biphoton Correlation Times with an Integrated Two-Color Broadband SU(1,1)-Interferometer
F. Roeder, R. Pollmann, M. Stefszky, M. Santandrea, K.H. Luo, V. Quiring, R. Ricken, C. Eigner, B. Brecht, C. Silberhorn, PRX Quantum 5 (2024).

DC Ionic Conductivity in KTP and Its Isomorphs: Properties, Methods for Suppression, and Its Connection to Gray Tracking
L. Padberg, V. Quiring, A. Bocchini, M. Santandrea, U. Gerstmann, W.G. Schmidt, C. Silberhorn, C. Eigner, Crystals 12 (2022) 1359.

General analytic theory of classical collinear three-wave mixing in a monolithic cavity
M. Santandrea, M. Stefszky, C. Silberhorn, Journal of Optics (2021).

Cryogenic Second-Harmonic Generation in Periodically Poled Lithium Niobate Waveguides
M. Bartnick, M. Santandrea, J.P. Höpker, F. Thiele, R. Ricken, V. Quiring, C. Eigner, H. Herrmann, C. Silberhorn, T. Bartley, Physical Review Applied (2021).

Non-Invasive Visualization of Ferroelectric Domain Structures on the Non-Polar y-Surface of KTiOPO4 via Raman Imaging
J. Brockmeier, P.W.M. Mackwitz, M. Rüsing, C. Eigner, L. Padberg, M. Santandrea, C. Silberhorn, A. Zrenner, G. Berth, Crystals (2021).

Multimode integrated SU(1,1) interferometer
A. Ferreri, M. Santandrea, M. Stefszky, K.H. Luo, H. Herrmann, C. Silberhorn, P. Sharapova, in: Conference on Lasers and Electro-Optics, Optica Publishing Group, 2021.

Improved non-linear devices for quantum applications
J. Gil López, M. Santandrea, G. Roland, B. Brecht, C. Eigner, R. Ricken, V. Quiring, C. Silberhorn, New Journal of Physics (2021).

Spectrally multimode integrated SU(1,1) interferometer
A. Ferreri, M. Santandrea, M. Stefszky, K.H. Luo, H. Herrmann, C. Silberhorn, P.R. Sharapova, Quantum (2021).

Quantum optical coherence: From linear to nonlinear interferometers
K.H. Luo, M. Santandrea, M. Stefszky, J. Sperling, M. Massaro, A. Ferreri, P. Sharapova, H. Herrmann, C. Silberhorn, Physical Review A (2021).

Interferometric method for determining the losses of spatially multi-mode nonlinear waveguides based on second harmonic generation
M. Santandrea, M. Stefszky, G. Roeland, C. Silberhorn, Optics Express (2020).

Waveguide resonator with an integrated phase modulator for second harmonic generation
M. Stefszky, M. Santandrea, F. vom Bruch, S. Krapick, C. Eigner, R. Ricken, V. Quiring, H. Herrmann, C. Silberhorn, Optics Express (2020).

Characterisation of width-dependent diffusion dynamics in rubidium-exchanged KTP waveguides
L. Padberg, M. Santandrea, M. Rüsing, J. Brockmeier, P. Mackwitz, G. Berth, A. Zrenner, C. Eigner, C. Silberhorn, Optics Express (2020).

Interferometric method for determining the losses of spatially multi-mode nonlinear waveguides based on second harmonic generation.
M. Santandrea, M. Stefszky, G. Roeland, C. Silberhorn, Optics Express 28 (2020).

Spatially single mode photon pair source at 800 nm in periodically poled Rubidium exchanged KTP waveguides
C. Eigner, L. Padberg, M. Santandrea, H. Herrmann, B. Brecht, C. Silberhorn, Optics Express 28 (2020).

Characterisation of fabrication inhomogeneities in Ti:LiNbO3 waveguides
M. Santandrea, M. Stefszky, G. Roeland, C. Silberhorn, New Journal of Physics (2019).

General framework for the analysis of imperfections in nonlinear systems
M. Santandrea, M. Stefszky, C. Silberhorn, Optics Letters (2019).

Fabrication limits of waveguides in nonlinear crystals and their impact on quantum optics applications
M. Santandrea, M. Stefszky, V. Ansari, C. Silberhorn, New Journal of Physics (2019).

Counter-propagating photon pair generation in a nonlinear waveguide
K.-H. Luo, V. Ansari, M. Massaro, M. Santandrea, C. Eigner, R. Ricken, H. Herrmann, C. Silberhorn, Optics Express (2019).

Counter-propagating photon pair generation in a nonlinear waveguide
K.H. Luo, V. Ansari, M. Massaro, M. Santandrea, C. Eigner, R. Ricken, H. Herrmann, C. Silberhorn, Optics Express (2019).

Periodically poled ridge waveguides in KTP for second harmonic generation in the UV regime
C. Eigner, M. Santandrea, L. Padberg, M.F. Volk, C.E. Rüter, H. Herrmann, D. Kip, C. Silberhorn, Optics Express (2018).