LinkNotes: Chips for optical quantum computing

2008-04-22

Chips for optical quantum computing

Physicists at Bristol University in the United Kingdom have demonstrated the first logic gates on a silicon chip that can process individual photons. This brings quantum computing, based upon manipulating single photons a step closer to reality.

clipped from arstechnica.com

Integrated optics: the way to scale a quantum computer

One of the problems inherent in every implementation of quantum computing has been scaling. To gain a significant speed-up, we need a system that has enough qubits to represent the solution, but this has, so far, proven to be impossible to do in a way that accomplishes any useful work. Now, new research from Bristol University has described a method of creating optical quantum gates that can scale to many qubits reasonably well.

clipped from www.phy.bris.ac.uk

Centre for Quantum Photonics

clipped from www.informationweek.com

Physicists Build First Single-Photon Logic Gate

Bristol University physicists advance the field of quantum computing with the successful miniaturization of a high-performance, optical "controlled-NOT gate."

Led by professor Jeremy O'Brien, the researchers have successfully miniaturized a high-performance, optical "controlled-NOT gate" -- a type of logic gate considered "the building block of a quantum computer," according to a press release from Bristol.

clipped from www.phy.bris.ac.uk