Perhaps one of the most famous experiments in physics has been giving us the wrong message all these years. For nearly two ...

"Dark photon" theory says light's interference patterns may emerge from quantum particles, not waves, upending centuries of ...

A single-photon detector (SPD) is sensitive to incidence of individual quanta of light and has many applications in photonics, such as fluorescence measurements, laser ranging, optical time-domain ...

A new discovery shows that messy, stray light can be used to clean up quantum systems instead of disrupting them. University ...

Photon purity is more than a technical detail. In photonic quantum computing, orderly single-photon streams are easier to ...

Driving late at night, you come upon a red light and stop the car. You lift your hand wearily to block the red glow streaming through your windshield. Suddenly, both the green and yellow lights come ...

Researchers at the University of Iowa have identified a new way to "purify" photons, a development that could improve both the performance and ...

Laser spectroscopy is a powerful tool for atmospheric gas analysis, yet traditional methods face challenges due to atmospheric turbulence and significant energy loss. While dual-comb spectroscopy ...

A photon was apparently detected in two places at once in a twist on the classic double-slit experiment, but many physicists ...

Does the universe notice that we're paying attention to a quantum experiment? The answer goes against everything we thought we knew.