vor 6 Jahren

Cluster Report Photonics in the Capital Region Berlin-Brandenburg

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36 Cluster Report Optics and PhotonicsPhotonics and Quantum Technology for Communications and Sensors One example is the ESA earth observation satellite “Sentinel-1A”. Equipped with a laser communication terminal containing laser diode benches from Berlin’s Ferdinand-Braun-Institut, Leibniz-Institut fuer Hoechstfrequenztechnik (FBH) and several optical components and systems from the Berliner Glas Group, the satellite can transmit data over long distances using lasers, a first in the communication of earth observation satellites. Semiconductor manufacturing requires experience and precision. © First Sensor AG Closed lightweight structures for mirrors in space © Berliner Glas Group The German communications satellite “Heinrich Hertz” is scheduled to go into orbit in 2021. More than 40 German companies and organisations are involved in this showcase project. The satellite is expected to operate for 15 years at about 36,000 km (22,370 miles) above the earth’s surface. Given the rough conditions in space, quality work is a must. A special antenna for communication with the earth is being built by the Berlin company First Sensor AG in cooperation with the Aachen University of Applied Sciences (RWTH) and IMST GmbH in Kamp-Lintfort. First Sensor is one of the world’s leading suppliers in the field of sensor technology, especially for industrial, medical, and mobility applications. The company’s avalanche photodiodes, for example, are used as optical sensors in autonomous industrial drones. The company has more than 850 employees at its six German locations and worldwide. (DATA-CUBE 3 ), autonomous multi-sensor systems, realtime communication and streming solutions (CCUBE). Di- GOS develops hard- and software on its own as well as together with longtime scientific partners such as the European Space Agency (ESA). The innovative SLR stations designed and developed by DiGOS are flexibly extensible for future applications like space debris tracking and laser communication. The laser diodes from eagleyard Photonics GmbH have also found their way into space. The Adlershof-based subsidiary of TOPTICA Photonics AG develops and manufactures laser diodes for a wide range of applications including analytics, automotive technology, and industrial applications as well as aerospace. For quantum technology applications they offer single frequency lasers with a line width down to below 1 MHz. DiGOS Potsdam GmbH has been founded as a spin-off of the GeoResearchCenter (GFZ). As a system integrator for geodetic and geophysical observation systems by developing complete turnkey systems, their working domains are manifold with a focus on turnkey Satellite Laser Ranging stations (SLR), seismic measurement stations Quantum Technology: from Theory to Application Quantum technologies open new horizons in the field of communication and computer technology. This includes the absolutely secure encryption of information by entangled photons, but also quantum simulations, quantum

Cluster Report Optics and PhotonicsPhotonics and Quantum Technology for Communications and Sensors 37 Single photon source for quantum experiments © AG Benson, HU Berlin computing and quantum sensors. Thanks to the good interplay between basic and applied research in the capital region, a broad ecosystem of innovative research groups of the major research institutes and of young quantum technology companies has formed in recent years. All major institutes involved in laser technology and metrology are now also involved in the field of quantum technology. This expertise is also reflected in the InnoQT innovation network, which connects the regional players and is open to new partners. This network links university and non-university research with industry partners, from start-ups and medium-sized companies to large, established firms. quantum-technologies-berlin The working group of Jens Eisert at the Dahlem Center for Complex Quantum Systems of the Freie Universität Berlin analyzes the theoretical problems of realistic quantum computers. The researchers pose questions about what kinds of quantum communication protocols can be conceived and how to develop a vision of the quantum internet. A recurrent theme is the issue how one can certify the correct functioning of components. Even if this kind of research is being pursued with theoretical methods, the work is often linked to quantum optical experiments. index.html Experiment for measuring the quantum Zeno effect © AG Benson, HU Berlin The Nanooptik AG led by Prof. Oliver Benson at Humboldt University Berlin investigates the theory of light-matter interaction. The researchers analyze fundamental question with new methods, such as quantum emitters in solids that generate single photons or exchange such photons with each other. Optical methods make it possible to verify the theories of quantum physics with tremendous precision. Particularly important phenomena are entanglement, wave-particle dualism, and other quantum paradoxes such as the quantum Zeno effect. The group also works on new quantum technologies, such as single quantum light sources on scanning probes for high-resolution spectroscopy and microscopy. They also develop photon sources and algorithms for a quantum cryptography. Together with local partners at universities, research institutions and industry, these new approaches are already being implemented in test tracks and demonstrators. They also perform quantum-enhanced optical precision measurements and develop ultra-stable optical systems to test fundamental physics, even in space.

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