Quantum Computing Resources
Wired link:
blog post:
John Preskill: Quantum
Computing and the Entanglement Frontier
Googles explanation about quantum computing
official google+ page:
It is useful, at this stage, to make a distinction between
the different sizes of the systems that we are going to examine. We shall call
a system microscopic if it is roughly of atomic dimensions, or
smaller. On the other hand, we shall call a system macroscopic when
it is large enough to be visible in the ordinary sense. This is a rather
inexact definition. The exact definition depends on the number of particles in
the system, which we shall call N. A system
is macroscopic if
$\frac{1}{\sqrt{N}} \ll 1$
which means that statistical arguments can be applied to
reasonable accuracy. For instance, if we wish to keep the statistical error
below one percent then a macroscopic system would have to contain more than
about ten thousand particles. Any system containing less than this number of
particles would be regarded as essentially microscopic, and, hence, statistical
arguments could not be applied to such a system without unacceptable error.
This definition I've found in here.
