UChicago Scientists Build Trap to Make Tiny Packages of Light ‘Collide’

The universe is illuminated via photons, the tiny individual particles that make up light, but they don’t interact with each other. To make them see the light, a team of University of Chicago physicists built a trap to help photons bounce off each other. Their photon collider is the latest effort to make photons behave like other particles such as electrons—a step toward greater understanding and control of quantum systems.

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