Quantum communications

Nanoscientists have found a way to make quantum dots, the building blocks of a future generation of computational devices, talk to each other. Ameenah Al-Ahmadi of Ohio University and colleagues built a theoretical model to study how light hitting a quantum dot might prompt a transfer of energy in a "coherent" fashion. The researchers found that when the dots were arranged further apart than the radius of the individual dots, light waves traveled between the dots in a consistent pattern. The researchers suggest this means a way to transmit information through a network of quantum dots using light might be possible. The study lays the groundwork for optical quantum computing in which photons replace electrons as the currency of information. "The idea is to make the (computing) process faster and smaller," explains Al-Ahmadi.