Thursday, November 19, 2009

First universal programmable quantum computer unveiled

http://www.newscientist.com/article/dn18154-first-universal-programmable-quantum-computer-unveiled.html



... with an accuracy of only 79 per cent... The experimental device uses beryllium ions to store qubits in the way they spin while the laser-pulse quantum gates perform simple logic operations on the qubits. The trick to making a quantum logic gate is in designing a series of laser pulses that manipulate the beryllium ions in a way that processes information. Another laser then reads off the results of the calculations.