A new quantum sensor can analyze the full spectrum of radio frequency and real-world signals, unleashing new potentials for soldier communications, spectrum awareness and electronic warfare. Army ...

Ringing in the new: microscope image of a ring laser used by the Harvard group. (Courtesy: Capasso Lab/Harvard SEAS) Frequency combs are one of the most important developments in metrology in the 21st ...

A glittering hunk of crystal gets its iridescence from a highly regular atomic structure. Frank Wilczek, the 2012 Nobel ...

The world's most sensitive table-top interferometric system—a miniature version of miles-long gravitational-wave detectors like LIGO—has completed its first science run.