SMRTR Science & EngineeringJul 17, 2025Interesting Engineering

World’s first glimpse of electron tunnels helps solve 100-year-old quantum mystery

SMRTR summary

Scientists have made a groundbreaking discovery in quantum mechanics, observing electron tunneling for the first time. Using intense laser pulses, researchers found that electrons collide with atomic nuclei inside energy barriers, a phenomenon they named "under-the-barrier recollision." This challenges previous beliefs and could advance technologies like quantum computing and ultrafast lasers.

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