The enigma machine takes a quantum leap

Researchers at the University of Rochester have moved beyond the theoretical in demonstrating that an unbreakable encrypted message can be sent with a key that's far shorter than the message—the first time that has ever ...

From unconventional laser beams to a more robust imaging wave

Here's the scene: a suspicious package is found in a public place. The police are called in and clear the area. Forced to work from a distance and unable to peer inside, they fear the worst and decide to detonate the package.

Single-pixel 'multiplex' captures elusive terahertz images

A novel metamaterial enables a fast, efficient and high-fidelity terahertz radiation imaging system capable of manipulating the stubborn electromagnetic waves, advancing a technology with potential applications in medical ...

Seeing through materials with visible light

With yogurt and crushed glass, University of Michigan researchers have taken a step toward using visible light to image inside the body. Their method for focusing light through these materials is much faster and simpler than ...

New shapes of laser beam 'sneak' through opaque media

Researchers have found a way to pre-treat a laser beam so that it enters opaque surfaces without dispersing—like a headlight that's able to cut through heavy fog at full strength.

Seeing the forest through the trees with a new LiDAR system

Shortly after lasers were first developed in the 1960s, LiDAR—whose name originated as a combination of "light" and "radar"—capitalized on the newly unique precision they offered for measuring both time and distance. ...

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