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Left: Meta-surface made of microscopic silicon cylinders, Center: three optical excitations superimpose to form a Fano resonance, Right: conversion efficiency as a function of excitation power, Inset: light converted to the green spectrum.

Scientists at Paderborn University improve technology to efficiently generate higher harmonics in nonlinear nanostructured metasurfaces.

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,…

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“Coaching | Female Empowerment” started with seven TRR 142-scientists

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

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Photograph (Paderborn University, Besim Mazhiqi)

Insights into everyday laboratory life | Many visitors on World Quantum Day

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

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Prof. Dr. Thomas Zentgraf provides insight into the CRC TRR142.

Interview with TRR 142-PI about holography and VR-glasses | PaderPhy episode 4

In episode 4, Prof. Dr. Thomas Zentgraf, head of the Ultrafast Nanophotonics group and Principal Investigator of three projects within the TRR 142, explains what Ultrafast Nanophysics has to do with holography.

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Putting a usefulness tag on semiconductor quantum technologies

Quantum technologies provide the amazing perspective to boost progress in communication, quantum computing or cryptography. Their advantage is based on utilizing the laws of quantum mechanics instead of classical physics which open up the possibility to implement highly efficient quantum algorithms, so the quantumness of a system becomes a valuable resource.

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Presentations at the DPG Spring Conference SAMOP 2023

This year's DPG Spring Conference in the sections atoms, molecules, quantum optics and photonics (SAMOP) takes place from 05 to 10 March 2023 in Hanover. Numerous researchers of the TRR 142 present their latest research.

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Habilitation von Dr. Sonja Barkhofen

Frau Dr. Sonja Barkhofen, Alumna des TRR 142 und Gruppenleiterin in der AG Integrierte Quantenoptik, hat am 24.11.2022 erfolgreich ihr Habilitationsverfahren bestanden und am 18.01.2023 die Lehrbefugnis erhalten.

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Photo (© Prof. Dr. Abdulhakem Elezzabi (University of Alberta)): Prof. Dr. Markus Betz (TU Dortmund, left) and Dr. Michael Schulz (president and founder of Class 5 Photonics, right) congratulate Dr. Hendrik Rose on the Best Student Paper Award.

Best Student Paper Award for Dr. Hendrik Rose at the SPIE Photonics West 2023

After two years of contributing with videos to the virtual meetings, this year Hendrik Rose could finally go to San Francisco and present a talk at the SPIE Photonics West.

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Photo (Paderborn University): Professor Christine Silberhorn, a Paderborn University physicist, joins the German Science and Humanities Council.

Professor Christine Silberhorn of Paderborn University joins the German Science and Humanities Council

The Federal President of Germany Dr. Frank-Walter Steinmeier has appointed Professor Christine Silberhorn, Head of the Institute for Photonic Quantum Systems and holder of the Chair of Integrated Quantum Optics at Paderborn University, to the German Science and Humanities Council. The physicist begins her three-year term as a member of Germany’s highest-ranking science policy advisory body on 1 February.

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Presentations at the SPIE Photonics West

Dr. Hendrik Rose and Prof. Dr. Torsten Meier are giving presenations at the SPIE Photonics West which takes place from 28 January to 01 Februar 2023 in San Francisco. They present their latest research:

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Photo (Paderborn University, Jennifer Bounoua): Prof Dr Johannes Blömer (left), Vice President for Research and Junior Academics, awarded prizes for excellent dissertations to: (from left to right): Dr Raschid Abedin, Dr Marius Dörner, Dr Philipp Dierks und Dr Hendrik Rose.

Excellence Award for Dr Hendrik Rose

Dr Hendrik Rose has been awarded a prize for his outstanding dissertation “Theoretical Analysis of the Interaction between Semiconductor Nanostructures and Quantum Light: From Single Pulses to Four-Wave Mixing“.

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Star Trek: How technical visions become reality

On Thursday, 2 February, at 5 pm, a galactic event will take place in lecture hall O1 at the University of Paderborn: In his lecture, Dr. Hubert Zitt from the University of Kaiserslautern will compare the visions of "Star Trek" with the current state of science and technology in a serious and at the same time humorous way.

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Prof. Dr. Jan Sperling (Photograph: Besim Mazhiqi)

jDPG Theo-Workshop 2023 – Quanteninformation in der Physik

Der 13. Theorieworkshop der jDPG findet in der Jugendherberge Wewelsburg statt. Studierende und Doktoranden erhalten während einer mehrtägigen Veranstaltung detaillierte Einblicke in einen Forschungsbereich. Zum diesjährigen Thema "Quanteninformation" hält Prof. Dr. Jan Sperling einen Vortrag über "Quantenverschränkung".

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TRR 142-3 Workshop in Bad Sassendorf

Scientific exchange and mutual presentation of project results were reason enough for around 80 members of TRR 142 to meet for the second workshop this year on November 28th and 29th, 2022 in Bad Sassendorf.

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“Science and beyond” – Doctorate’s meeting of TRR 142 young researchers at UPB

On 10 November 22, the young researchers of TRR 142-3 came together for a doctorate’s meeting in the P8 building at UPB. Welcomed by Christine Silberhorn and Dirk Waldhoff, they could take a closer look into possible career paths in and outside academia and discussed the needs and possibilities on their way towards the PhD. Dirk Waldhoff and the coach/trainer Uta Stiene presented the especially tailored future coaching programme “Female…

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Graphic (Bocchini et al.): Schematic illustration of the K (de)intercalation in KTA-based electrodes.

Electrochemical performance of KTA – More than a photonic material?

The world needs more energy, preferably in a form that is clean and renewable. This requires sophisticated energy-storage strategies that go beyond the presently used lithium-ion batteries. In this context, there is an intense search for new electrode materials that provide high working voltages, thermal stability, and energy densities, as well as fast ion (de)intercalation.

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Graphic (Paderborn University): Comparison of the ionic conductivity between (a) gray-tracked and (b) annealed samples.

Performance boost by suppressing gray tracking

The world is just about to leap into quantum technology 2.0, promising a performance boost for existing and completely new functionalities and devices.

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Illustration photo (Paderborn University, Besim Mazhiqi): Researchers from the ‘Integrated Quantum Optics’ working group entangle photons, the smallest possible light particles.

Milestones achieved on the path to useful quantum technologies

Researchers at Paderborn and Ulm universities are developing the first programmable optical quantum memory

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TRR142 strongly represented at the DPG “spring” meeting 2022

In September, the annual conference of the German Physical Society (DPG) with a focus on condensed matter physics and optics with more than 3000 participants took place in Regensburg. The groups of the TRR142 were represented with an impressive number of more than 20 oral and poster contributions of which three were invited talks.

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Illustration of the substrate-graphene-layer structure.

Poster award of the German Physical Society for Dr. Tobias Henksmeier

Dr. Tobias Henksmeier, PostDoc in the team for optoelectronic materials and components of Prof. Dr. Dirk Reuter, has received one of the three awards for the best poster of the section for condensed matter.

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