TRR 142 - Cavity-enhanced spontaneous parametric down-conversion with temporal filtering using integrated superconducting detectors (C07*)
Overview
In this project, we will study the parametric down-conversion in a cavity with integrated superconducting detectors under cryogenic conditions. By using ultrafast driving electronics, we will implement pump filtering in the time domain, by enabling the integrated detector only after the pump has decayed away. The herald photon remains resonant with the cavity, and can thus be detected. We will investigate the spectral properties of the correlated photons generated in this process, as well as optimise the nonlinear behaviour of parametric down-conversion under cryogenic conditions.
Key Facts
- Grant Number:
- 231447078
- Research profile area:
- Optoelektronik und Photonik
- Project type:
- Forschung
- Project duration:
- 01/2022 - 12/2025
- Funded by:
- Deutsche Forschungsgemeinschaft (DFG)
- Website:
-
Homepage
More Information
Publications
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).
Harnessing temporal dispersion for integrated pump filtering in spontaneous heralded single-photon generation processes
J. Brockmeier, T. Schapeler, N.A. Lange, J.P. Höpker, H. Herrmann, C. Silberhorn, T. Bartley, New Journal of Physics (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).
Compact Metasurface-Based Optical Pulse-Shaping Device
R. Geromel, P. Georgi, M. Protte, S. Lei, T. Bartley, L. Huang, T. Zentgraf, Nano Letters 23 (2023) 3196–3201.
Degenerate photons from a cryogenic spontaneous parametric down-conversion source
Show all publications
N.A. Lange, T. Schapeler, J.P. Höpker, M. Protte, T. Bartley, Physical Review A 108 (2023).
Funded by:
