News Quantum Physics

Quantum physics can confirm where someone is located

Entanglement can connect the digital world to the physical world

Two spheres on a colorful background connected by jagged lines

Entanglement, a quantum connection between two particles, is the basis for a variety of security techniques, including verifying someone’s location.

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By Emily Conover

DENVER — An urgent call comes in from the White House. But the recipient is skeptical: They need a way to verify that the message comes from the purported location. Quantum physics has a solution.