Pyroelectric influence on lithium niobate during the thermal transition for cryogenic integrated photonics
F. Thiele, T. Hummel, N.A. Lange, F. Dreher, M. Protte, F. vom Bruch, S. Lengeling, H. Herrmann, C. Eigner, C. Silberhorn, T. Bartley, Materials for Quantum Technology 4 (2024).

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).

Realization of a Multi-Output Quantum Pulse Gate for Decoding High-Dimensional Temporal Modes of Single-Photon States
L. Serino, J. Gil López, M. Stefszky, R. Ricken, C. Eigner, B. Brecht, C. Silberhorn, PRX Quantum 4 (2023).

Demonstration of Hong-Ou-Mandel interference in an LNOI directional coupler
S. Babel, L. Bollmers, M. Massaro, K.H. Luo, M. Stefszky, F. Pegoraro, P. Held, H. Herrmann, C. Eigner, B. Brecht, L. Padberg, C. Silberhorn, Optics Express 31 (2023).

Vibrational Properties of the Potassium Titanyl Phosphate Crystal Family
S. Neufeld, U. Gerstmann, L. Padberg, C. Eigner, G. Berth, C. Silberhorn, L.M. Eng, W.G. Schmidt, M. Rüsing, Crystals 13 (2023).

All optical operation of a superconducting photonic interface
F. Thiele, T. Hummel, A.N. McCaughan, J. Brockmeier, M. Protte, V. Quiring, S. Lengeling, C. Eigner, C. Silberhorn, T. Bartley, Optics Express 31 (2023).

Broadband optical TO5 antennas for directional emission of light
H. Farheen, L.-Y. Yan, V. Quiring, C. Eigner, T. Zentgraf, S. Linden, J. Förstner, V. Myroshnychenko, Optics Express 30 (2022) 19288.

Cryogenic integrated spontaneous parametric down-conversion
N.A. Lange, J.P. Höpker, R. Ricken, V. Quiring, C. Eigner, C. Silberhorn, T. Bartley, Optica 9 (2022).

Cryogenic electro-optic modulation in titanium in-diffused lithium niobate waveguides
F. Thiele, F. vom Bruch, J. Brockmeier, M. Protte, T. Hummel, R. Ricken, V. Quiring, S. Lengeling, H. Herrmann, C. Eigner, C. Silberhorn, T. Bartley, Journal of Physics: Photonics 4 (2022).

Scalable Generation of Multiphoton Entangled States by Active Feed-Forward and Multiplexing
E. Meyer-Scott, N. Prasannan, I. Dhand, C. Eigner, V. Quiring, S. Barkhofen, B. Brecht, M.B. Plenio, C. Silberhorn, Physical Review Letters 129 (2022).

Scalable Generation of Multiphoton Entangled States by Active Feed-Forward and Multiplexing
E. Meyer-Scott, N. Prasannan, I. Dhand, C. Eigner, V. Quiring, S. Barkhofen, B. Brecht, M.B. Plenio, C. Silberhorn, Physical Review Letters 129 (2022).

Two-Mode Photon-Number Correlations Created by Measurement-Induced Nonlinearity
T. Meier, J.P. Hoepker, M. Protte, C. Eigner, C. Silberhorn, P.R. Sharapova, J. Sperling, T. Bartley, in: Conference on Lasers and Electro-Optics: Applications and Technology, Optica Publishing Group, 2022, p. JTu3A. 17.

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.

Integrated superconducting nanowire single-photon detectors on titanium in-diffused lithium niobate waveguides
J.P. Höpker, V.B. Verma, M. Protte, R. Ricken, V. Quiring, C. Eigner, L. Ebers, M. Hammer, J. Förstner, C. Silberhorn, R.P. Mirin, S. Woo Nam, T. Bartley, Journal of Physics: Photonics 3 (2021) 034022.

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).

Production of waveguides made of materials from the KTP family
L. Padberg, C. Eigner, M. Santandrea, C. Silberhorn, (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).

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).

Pulse shaping using dispersion-engineered difference frequency generation
M. Allgaier, V. Ansari, J.M. Donohue, C. Eigner, V. Quiring, R. Ricken, B. Brecht, C. Silberhorn, Physical Review A 101 (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).