Progress in Quantum Computing
"Three major technologies all have the potential to move from demonstration computers to practical, highly powerful machines."
NYT > Technology Download time: Nov 10 2010 7:57 AM ET
In 1981 the physicist Richard Feynman speculated about the possibility of "tiny computers obeying quantum mechanical laws." He suggested that such a quantum computer might be the best way to simulate real-world quantum systems, a challenge that today is largely beyond the calculating power of even the fastest supercomputers.
Since then there has been sporadic progress in building this kind of computer. The experiments to date, however, have largely yielded only systems that seek to demonstrate that the principle is sound. They offer a tantalizing peek at the possibility of future supercomputing power, but only the slimmest results.
Recent progress, however, has renewed enthusiasm for finding avenues to build significantly more powerful quantum computers. Laboratory efforts in the United States and in Europe are under way using a number of technologies.…
See NYT > Technology for links to further info.