GoKawiilNorthwestern Physicists Trap Single Positron for Months in Quantum Cyclotron
A Northwestern University team led by Gerald Gabrielse used a device called a single-positron quantum cyclotron to hold one positron—the antimatter counterpart of an electron—in a vacuum near absolute zero for several months. The extreme cooling let researchers precisely manipulate the particle's quantum states using electric and magnetic fields without destroying it, a result published in Physical Review Letters.
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Antimatter is notoriously hard to study because it annihilates on contact with ordinary matter, so a method that preserves a single particle for extended observation could open new ways to probe its quantum properties. This kind of precision measurement may eventually help physicists address why the universe is dominated by matter despite theories predicting equal amounts of matter and antimatter at its origin.
- Researchers trapped a single positron for months using a specialized quantum cyclotron device.
- Cooling the particle near absolute zero allowed precise, non-destructive control of its quantum states.
- The technique could aid future research into the long-standing matter-antimatter asymmetry mystery.
Source: wired.com — Jorge Garay, 2026-10-25
Published there as: “Scientists Trapped an Antimatter Particle for Months to Study Its Secrets”
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