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Quantum Information Science

All articles tagged with #quantum information science

science-and-technology2 years ago•5 min saved

"Scientists Achieve Precision in Generating Visible Laser Light with Miniaturized Technique"

Scientists at the National Institute of Standards and Technology (NIST) and the Joint Quantum Institute (JQI) have developed a technique to convert near-infrared laser light into specific wavelengths of visible light with high accuracy and efficiency. By introducing tiny, periodic bumps along the surface of a microresonator, the researchers can select a specific output wavelength of visible light with an accuracy of 99.7%. This technique has potential applications in precision timekeeping and quantum information science, enabling the deployment of compact devices like photonic chips for quantum sensors and optical atomic clocks.

via Phys.org|

#laser-technology #microresonators #photonic-chip

quantum-technology2 years ago•3 min saved

New Tool Unravels Quantum Electronic States Layer-by-Layer.

Researchers at the University of Chicago have developed a new tool that can help reveal the origin of electronic states in engineered materials, paving the way for their use in future quantum technology applications. The tool uses a technique called layer-encoded frequency-domain photoemission to send two laser pulses into a layered material, allowing researchers to piece together a “movie” that shows how electrons move in each layer. The researchers applied the technique to a two-layered magnetic topological insulator and found that the special electronic state was not in the magnetic layer, which defies theoretical predictions. The technique could also be used to better understand other special materials, like topological superconductors and so-called twistronics.

via SciTechDaily|

#electronic-states #layered-materials #magnetic-topological-insulators