In a world-first, researchers from the Femtosecond Spectroscopy Unit at the Okinawa Institute of Science and Technology (OIST) have directly observed the evolution of the elusive dark excitons in atomically thin materials, laying the foundation for new breakthroughs in both classical and quantum information technologies.

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Researchers at OIST achieved the first direct observation of dark excitons in atomically thin materials using advanced spectroscopy techniques. Dark excitons are quantum particles that don't emit light but can carry information for longer periods, making them promising for quantum computing applications. The study tracked how bright excitons transform into different types of dark excitons over time, revealing their potential for valleytronics - a technology that uses electron momentum states to encode information. This breakthrough opens new possibilities for more stable quantum information systems that require less extreme cooling.

Shining a light on dark valleytronics: First direct observation of dark excitons in atomically thin materials

Defining landscapes of energy with bright and dark excitons

Observing electrons at the femtosecond scale