Quantum C

Quantum computers are the next big thing. Not that they
will ever power smartphones - the particles they run have to be at
near cryogenic temperatures - but they will be available on the cloud.

In fact, they might be slow on normal problems, but where they really
shine is on on large scale ones. From 2n gains to 2^n gains in computing power
for every bit added...

In effect, quantum computing merges the finding of quantum physics
with computing practices. On top of the two possibilities offered by two bits,
one adds another value furnished by an electron (its magnetic spin value, other
than being up or down, can take an infinity of values in between). Computational
capacity thus takes on vertiginous dimensions.

So what does superimposed mean: we don't know the value unless we measure it.

What is entanglement: when one does measure, the value of one bit determines
the value of the other .( In effect, for particles acting on each other, some constant
relations remain, such the value of  total momentum of the two).