11.   But he said he was still not convinced that the practical problems of building reliable quantum computers could be overcome.

12.   But the gates in a quantum computer would be so small that each would consist of a single atom, which means that they would behave quantum mechanically.

13.   By building a quantum computer, he says, we can reach out and mould the multiverse.

14.   Correlating groups of atoms this way may find a use in quantum computers, devices where calculations are performed using single atoms or particles as counters.

15.   Despite their potential power, Shor said in his presentation, quantum computers will not necessarily perform all tasks more quickly than classical computers.

16.   Despite its promise and recent progress, the scientists acknowledged that there is much work left to do to create commercially or scientifically useful quantum computers.

17.   Deutsch claims that the very theory of a quantum computer forces physicists to take seriously the many-worlds interpretation of quantum theory.

18.   Feed a problem into a quantum computer and instead of trying all possible results one at a time, it could calculate them all simultaneously.

19.   For a quantum computer, the electrons would have to be tipped one by one, a feat no one has yet accomplished.

20.   He treats the multiverse as if it were a quantum computer.