SPDC single-photon source in Ti-indiffused diced ridge LiNbO<sub>3</sub> waveguides
C. Kießler, M. Kirsch, S. Lengeling, H. Herrmann, C. Silberhorn, Optics Continuum 4 (2025).

Cryogenic feedforward of a photonic quantum state
F. Thiele, N. Lamberty, T. Hummel, N.A. Lange, L.M. Procopio Peña, A. Barua, S. Lengeling, V. Quiring, C. Eigner, C. Silberhorn, T. Bartley, Optica 12 (2025).

Widely non-degenerate nonlinear frequency conversion in cryogenic titanium in-diffused lithium niobate waveguides
N.A. Lange, S. Lengeling, P. Mues, V. Quiring, W. Ridder, C. Eigner, H. Herrmann, C. Silberhorn, T. Bartley, Optics Express 33 (2025).

Photorefraction and in-situ optical cleaning in various types of LiNbO3 waveguides
M. Kirsch, C. Kießler, S. Lengeling, M. Stefszky, C. Eigner, H. Herrmann, C. Silberhorn, Optics &; Laser Technology 193 (2025).

Mg dopants in lithium niobate: Defect models and impact on domain inversion
A. Bocchini, M. Rüsing, L. Bollmers, S. Lengeling, P. Mues, L. Padberg, U. Gerstmann, C. Silberhorn, C. Eigner, W.G. Schmidt, Physical Review Materials 9 (2025).

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).

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).

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).

Towards integrated superconducting detectors on lithium niobate waveguides
J.P. Höpker, M. Bartnick, E. Meyer-Scott, F. Thiele, T. Meier, T. Bartley, S. Krapick, N.M. Montaut, M. Santandrea, H. Herrmann, S. Lengeling, R. Ricken, V. Quiring, A.E. Lita, V.B. Verma, T. Gerrits, S.W. Nam, C. Silberhorn, in: M. Agio, K. Srinivasan, C. Soci (Eds.), Quantum Photonic Devices, SPIE, 2017, p. 1035809.