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CERN Antiproton Decelerator

CERN Antiproton Decelerator

Particle Physics Facility

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The quest to trap antimatter

New Capabilities

World's only source of low-energy antiprotons

CERN's BASE collaboration kept a single antiproton oscillating between quantum states for 50 seconds—long enough to create the world's first antimatter qubit. The breakthrough, published in Nature in July 2025, opens the door to measuring antiproton properties with 10 to 100 times more precision than before. It's not about building quantum computers. It's about answering why the universe exists at all.

Updated Jan 7