A constantly changing world requires profound scientific and technological knowledge. And science does not need international or gender boundaries. Therefore, we need to work hard on excellent research in an inclusive environment. On September 19 and 20, 2023, young scientists of the CRC TRR 142 and guests were invited to present their current research as well as to reflect on career paths within sciences – and what it needs to overcome our…

English version below ||| Vielleicht fragen Sie sich, was denn eigentlich hinter den Mauern von Reinraum und Optiklabor in der Uni Paderborn passiert. Wie sieht die Forschung von Physikerinnen und Physikern aus, und was hat das mit unserem täglichen Leben zu tun? Inwieweit trägt die Grundlagenforschung dazu bei, dass wir unsere Welt besser verstehen – sodass diese zukunftssicherer wird? Zu diesen und mehr Fragen geben Forschende der Uni…

On August 3, 2023, Dr. Alexander Trautmann successfully defended his dissertation on: „Microscopic analysis of the nonlinear optical response of semiconductors: Carrier dynamics in extremely intense Terahertz fields and many-body correlations in type-II heterostructures”. Congratulations, Alexander!

On July 12,2023, Dr. Adriana Bocchini successfully defended her dissertation on: „Optical and Electrochemical Properties of KTP-Type Crystals”. Congratulations, Adriana!

With her laudatory speech at the ZEISS Research Award ceremony, Prof. Dr. Christine Silberhorn honoured outstanding research achievements in the fields of optics and photonics. ZEISS presented two research awards to a total of four scientists at a ceremony at the Deutsches Museum in Munich on 27 June.

Professor Klaus Jöns, a physicist at Paderborn University, was recently appointed a new fellow at the Max Planck School of Photonics. Jöns is the third Paderborn fellow at this renowned graduate school, alongside Professor Christine Silberhorn and Professor Thomas Zentgraf. The Max Planck School of Photonics (MPSP) is funded by the German Federal Ministry of Education and Research (BMBF) and offers an international and interdisciplinary master’s…

Professor Christine Silberhorn has been selected as a finalist for the Falling Walls Science Breakthroughs of the Year 2023 in the category Physical Sciences with her breakthrough on “Feed forward and time-multiplexing: the missing ingredients for photonic quantum technologies”. Congratulations!

Paderborner Forscher*innen aus dem Department Physik und vom Institut für Photonische Quantensysteme (PhoQS) haben im Rahmen eines innerhalb des Sonderforschungsbereichs/TRR 142 geförderten Projekts erfolgreich Quantenpunkte – nanoskopische Strukturen, in denen die Quanteneigenschaften der Materie zum Tragen kommen – hergestellt, die im optischen C-Band bei einer Wellenlänge zwischen 1530 bis 1565 Nanometer leuchten. Das Besondere ist, dass es…

When matter is exposed to highly intense electromagnetic radiation, nonlinearities of the material may lead to the emission of light that contains very high multiples of the incident frequency. This process is called high harmonic generation (HHG) and can be used for the generation of extremely short light pulses with durations in the range of attoseconds (in 1 attosecond, i.e., 10-18 s, light travels just 0.3 nanometer which is comparable to the…

This year's NRW Nano Conference - Germany's largest conference in the field of nanotechnologies - took place from 23 to 24 May. In the premises of the Dortmund Congress Centre, a top-class scientific programme was accompanied by a two-day exhibition. Around 40 players from science and industry presented forward-looking projects and products here. Overall, a thematic focus on the field of quantum technologies was clearly evident. The…

Natural and artificial crystals often exhibit the ability to change the spectral color of light, a process known as nonlinear optical effect. This effect allows the frequency of a light component to be changed and transformed, for example, from the red to the green color spectral region. Color conversion is used in numerous applications, such as nonlinear microscopy of biological structures, material investigations, LED light sources and lasers,…

This year's CLEO (Conference on Lasers and Electro-Optics) took place from 7 to 12 May 2023. Several scientists from the PhoQS presented their research activities at the renowned conference in San Jose, USA. Among others, the following work was presented: •    Title: Hong-Ou-Mandel Interference in LNOI Authors: Silia Babel (presenting author), Laura Bollmers, Marcello Massaro, Kai Hong Luo, Michael Stefszky, Federico Pegoraro, Philip Held,…

With an inspiring one-day workshop on 14 April 2023, seven young TRR 142 female scientists started their coaching programme FEMALE EMPOWERMENT.

This year's World Quantum Day took place on April 14th. Scientists from Paderborn University offered insights into optics labs and clean rooms.

The Institute for Photonic Quantum Systems (PhoQS) and the SFB/Transregio 142 celebrate World Quantum Day today - a global initiative to promote public understanding of quantum technologies!

Quantum photonics has the potential of revolutionizing technology by bringing quantum effects toward applications. Among the most prominent effects resulting from nonlinear light–matter interaction is the generation of correlated and entangled photons through various processes (spontaneous parametric down-conversion, spontaneous four-wave mixing). Such nonlinear optical processes benefit from the concentration of electromagnetic fields in small…

Material dispersion accumulated in optical setups tends to heavily distort and chirp ultra-short laser pulses which can be especially disadvantageous in nonlinear optical applications or pump-probe experiments. Typically, pulse compressors consisting of a prism or grating pair are used to partially compensate for the dispersion and reshape the laser pulses to become short again. However, these pulse compressors are limited to correcting only…

This year’s Spring Meeting of the Condensed Matter Section of the DPG took place in Dresden, on March 26th-31st, 2023. It ranks traditionally among the largest physics congresses in Europe. Therefore, we are particularly proud that one of our CRC members, Adriana Bocchini from the Theoretical Materials Physics in Paderborn group won the DPG poster award for her work on the electrochemical performance of KTiOAsO4 crystals as cathode and anode…

The focus session organized by Ilya Akimov (TU Dortmund) and Torsten Meier (Paderborn University) included 5 invited and a number of contributed presentations and received considerable attention.