"Two-Photon System" Opens New, Shorter Road to Quantum Computing
Researchers across the pond have stumbled on a major breakthrough that could expedite humanity's march toward quantum computing. Scientists from Bristol's Centre for Quantum Photonics have developed a photonic chip capable of performing “calculations that are exponentially more complex than before,” thanks to a complex photonic maneuver called quantum walk. Hitherto, all quantum walk experiments have only been performed with a single photon, but these British dudes are the first ones to pull it off with two identical particles of light.
"It is widely believed that a quantum computer will not become a reality for at least another 25 years. However, we believe, using our new technique, a quantum computer could, in less than ten years, be performing calculations that are outside the capabilities of conventional computers," said Professor Jeremy O'Brien, Director of the Centre for Quantum Photonics.
"Using a two-photon system, we can perform calculations that are exponentially more complex than before," says Prof O'Brien. "This is very much the beginning of a new field in quantum information science and will pave the way to quantum computers that will help us understand the most complex scientific problems."

Pictured: Photonic Chip