Quantum theory and Einstein's theory of general relativity are two of the greatest successes in modern physics. Each works ...

The encryption protecting billions of dollars, which experts once called unbreakable, no longer works. Hackers don’t need passwords. They don’t brute-force keys. They simply walk through digital ...

A single atom as a movable slit: Researchers realize Einstein's thought experiment in original form, observing ...

Abstract: Digital receivers are required to recover the transmitted symbols from their observed channel output. In multiuser multiple-input multiple-output (MIMO) setups, where multiple symbols are ...

Abstract: The radio frequency (RF) spectrum is a scarce natural resource utilized by terrestrial and satellite systems that operate in regulated frequency bands. The sharing of this scarce resource ...

Physicists in China have brought one of Einstein’s thought experiments into reality—but not quite with the outcome he hoped ...

Scientists in China have performed an experiment first proposed by Albert Einstein almost a century ago when he sought to ...