Research

Browse all posts in the Research category.

43 to 48 of 73

07OCT 2024
Bernd Witzigmann
FAU LMQ Research Spotlight: How to overcome the efficiency limits in ultraviolet LEDs
Light emitting diodes (LEDs) provide an efficient way to convert electrical to optical power. Aluminum gallium nitride (AlGaN) LEDs produce ultraviolet (UV) radiation and will improve environmental, medical and industrial application with their compactness and efficiency. Those applications include curing, sterilization and water purification. Still, the quantum efficiency of UV-LEDs is lower than 10%, which […]Light emitting diodes (LEDs) provide an efficient way to convert electrical to optical power. Aluminum gallium nitride (AlGaN) LEDs produce ultraviolet (UV) radiation and will improve environmental, medical and industrial application with their compactness and efficiency. Those applications include curing, sterilization and water purification. Still, the quantum efficiency of UV-LEDs is lower than 10%, which […]
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18SEP 2024
FAU LMQ News
FAU LMQ Research Spotlight: Neural networks made of light
The increasing size of neural networks for deep learning applications and their energy consumption create a need for alternative neuromorphic approaches, for example, using optics. In their work, Clara Wanjura and Florian Marquardt propose a new way of implementing a neural network with an optical system which could make machine learning more sustainable in the […]
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13AUG 2024
Daniel Burgarth
FAU LMQ Research Spotlight: Understanding resonance in light-matter interactions
The interaction between light and matter is one of the oldest research areas of quantum mechanics, and a field that just keeps on delivering new insights and applications. With the arrival of cavity quantum electrodynamics one can now achieve strong light-matter couplings which form the basis of most implementations of quantum technology. This has brought […]
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29JUL 2024
FAU LMQ News
FAU LMQ Research Spotlight: A liquid crystal source of photon pairs
Spontaneous parametric down-conversion (SPDC) – the splitting of a single photon in two – is crucial for photonic quantum technologies. In its very essence, SPDC breaks the inversion symmetry. It is therefore only possible in non-centrosymmetric crystals but not in isotropic materials like ordinary liquids or gases. Recently, however, ferroelectric nematic liquid crystals have been […]
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15JUL 2024
FAU LMQ News
When quantum physics takes the bar by storm
The terms “Wenz”, “Solo” and “Sie” are as much part of a Bavarian pub as the beer tap and the regulars’ table. It’s where you’ll often see groups of (usually) four players huddled over their playing cards trying to be the first to get 60 points at the traditional card game known as “Schafkopf”. FAU […]
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05JUL 2024
FAU LMQ News
FAU LMQ Research Spotlight: Picky light – how light ignores interactions of matter
In their recent work, Andreas Schellenberger and Kai Phillip Schmidt investigate correlated light-matter quantum systems introducing additional matter-matter interactions. Their key finding is that the matter-matter interactions do not play a role in the emerging light-matter physics at low energies for the investigated case of macroscopic systems and small light-matter couplings.
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