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Light Pulses

All articles tagged with #light pulses

Quantum Physics Experiments Reveal 'Negative Time' Phenomenon
science9 months ago

Quantum Physics Experiments Reveal 'Negative Time' Phenomenon

Scientists at the University of Toronto observed negative interaction times in quantum physics experiments, where light passing through atoms appears to exit before it should, due to wave reshaping rather than actual backward travel in time. This phenomenon, confirmed through precise measurements with rubidium atoms, advances understanding of quantum effects and could influence future quantum technologies, though practical applications remain uncertain.

Light Pulse Transforms Insulators to Metals in 100 Femtoseconds
science-and-technology1 year ago

Light Pulse Transforms Insulators to Metals in 100 Femtoseconds

Scientists have achieved a groundbreaking transformation of vanadium oxide from an insulator to a metal in just 100 femtoseconds using light pulses, without generating heat. This discovery, led by an international team and published in Nature Physics, could revolutionize electronics by enabling faster, more energy-efficient devices. The process involves deformation waves that alter the material's structure at a molecular level, offering new possibilities for quantum technologies and AI.