Welcome to our group website!
Open positions: We currently offer several Bachelor's and Master's thesis projects. If you are interested, drop us a line and come along for a lab tour!
News:May 06, 2025 Congratulations to Theresa for the successful defense of her Bachelor thesis!
April 11, 2025 We spent three days on a group retreat with the Heeg group in the picturesque nowhere in Brandenburg. How did we end up? With an overview of possible techniques to determine an absorption spectrum, everyone knowing how to pantomime the honey badger, lots of Italian and Brazilian food and a hangover on the last morning.
April 04, 2025 New preprint "Hong-Ou-Mandel effect with two frequency-entangled photons of vastly different color" on arXiv!
March 01, 2025 We warmly welcome Steven as a new Bachelor student in our group!
December 06, 2024 Santa Claus and Christmas party! This year we went to the medieval Christmas market to throw axes and drink mulled wine. Followed by Christmas dinner at a delicious Italian restaurant.
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Research:
Mid-IR sensing with undetected photons
Quantum frequency conversion
Integrated photonics |
Newest publications:
- Felix Mann, Helen M. Chrzanowski, Felipe Gewers, Marlon Placke, and Sven Ramelow, "Noise analysis of a quasi-phase-matched quantum frequency converter and higher-order counter-propagating SPDC", Opt. Express 32, 42225-42239 (2024)
- M. Placke, J. Schlegel, F. Mann, P. Della Casa, A. Thies, M. Weyers, G. Tränkle, and S. Ramelow, "Telecom-Band Spontaneous Parametric Down-Conversion in AlGaAs-on-Insulator Waveguides", Laser & Photonics Reviews (2024)
- F. Mann, H. M. Chrzanowski, F. Gewers, M. Placke, and S. Ramelow, "Low-noise quantum frequency conversion in a monolithic cavity with bulk periodically poled potassium titanyl phosphate", Phys. Rev. Appl. 20, 054010 (2023)