NEWSROOM

Three nano glass spheres cling to one another. They form a tower-like cluster, similar to when you pile three scoops of ice cream on top of one another – only much smaller. The diameter of the nano cluster is ten times smaller than that of a human hair. With the help of an optical device and laser beams, researchers at ETH Zurich have succeeded in keeping such objects almost completely motionless in levitation. This is significant when it comes to the future development of qu

The research team studied how phonons interfere with each other by looking at the shape of their signal in Raman spectroscopy, a technique that measures the vibrational modes of a material. The spectrum revealed a sharply asymmetric line shape and in some cases showed a complete dip, forming an antiresonance pattern characteristic of intense interference. The effect proved highly sensitive to the specificities of the silicon carbide surface. The comparison between three diffe

What are the limits of quantum physics? This is a question that has been researched around the world for decades. If we want to make the properties of the quantum world technically usable, we need to understand whether objects that are significantly larger than atoms and molecules can also exhibit quantum phenomena.For example, small glass spheres with a diameter of one hundred nanometres can be examined – still over a thousand times smaller than a grain of sand, but huge by

These results hint at the possibility of paradigm-shifting optical quantum devices based not on conventional, difficult-to-scale components like waveguides and beam splitters, or even extended optical microchips, but instead on error-resistant metasurfaces that offer a host of advantages: designs that don’t require intricate alignments, robustness to perturbations, cost-effectiveness, simplicity of fabrication, and low optical loss. Broadly speaking, the work embodies metasur

In a groundbreaking experiment, researchers from Tianjin University, Zhejiang University, Northeastern University and University of Science and Technology of China have directly observed anti-Klein tunneling (AKT)—a quantum paradox where chiral particles are entirely reflected instead of passing through an energy barrier. This long-sought quantum-like behavior is realized not with electrons, but with engineered sound waves in a custom-designed bilayer phononic crystal.

Researchers have succeeded in unraveling for the first time the mystery of the 'electron tunneling' process, a core concept in quantum mechanics, and confirmed it through experiments. This study was published in the international journal Physical Review Letters and is attracting attention as a key to unlocking the long-standing mystery of 'electron tunneling,' which has remained unsolved for over 100 years.