Science News: To mask data transferred between a sender and a receiver, researchers have developed a cloaking device that creates holes in time and space. Joseph Lukens of Purdue University in West Lafayette, Indiana, and colleaguesâmdash;whose paper was published online in Natureâmdash;manipulated the flow of photons so that minute gaps occurred in the light wave. They then injected an electrical signal, consisting of binary data, that went undetected because the data bits passed through the gaps. Such a device could advance the field of secure communications by concealing transmissions from potential eavesdroppers.
An ultracold atomic gas can sync into a single quantum state. Researchers uncovered a speed limit for the process that has implications for quantum computing and the evolution of the early universe.