Hanan Kalaz

Time interfaces: The gateway to four-dimensional quantum optics

A new study explores the behavior of photons, the elementary particles of light, as they encounter boundaries where material properties change rapidly over time. This research uncovers remarkable quantum optical phenomena which may enhance quantum technology and paves the road for an exciting nascent field: four-dimensional quantum optics.

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Novel photochromic glass can store rewritable 3D patterns long term

For decades researchers have been exploring how to store data in glass because of its potential to hold information for a long time — eons — without applying power. A special type of glass that changes color in different wavelengths of light, called photochromic glass, holds promise for stable, reusable data storage. Now, researchers have

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Toward high electro-optic performance in III-V semiconductors

From integrated photonics to quantum information science, the ability to control light with electric fields — a phenomenon known as the electro-optic effect — supports vital applications such as light modulation and frequency transduction. These components rely on nonlinear optical materials, in which light waves can be manipulated by applying electric fields.

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Automatic cell analysis with the help of artificial intelligence

Identifying and delineating cell structures in microscopy images is crucial for understanding the complex processes of life. This task is called ‘segmentation’ and it enables a range of applications, such as analyzing the reaction of cells to drug treatments, or comparing cell structures in different genotypes. It was already possible to carry out automatic segmentation

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Mesoporous silicon: Semiconductor with new talents

Silicon is the best-known semiconductor material. However, controlled nanostructuring drastically alters the material’s properties. Using a specially developed etching apparatus, a team has now produced mesoporous silicon layers with countless tiny pores and investigated their electrical and thermal conductivity. For the first time, the researchers elucidated the electronic transport mechanism in this mesoporous silicon. The

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