You don't say how much simpler you want things. That would help people know how much to explain and where to start.

I like John Gribben's book (http://www.amazon.co.uk/Schrodingers-Kittens-Search-Reality-...) but some people tell me there are some problems with it, and it's old now.

From the article: "I think we can definitely say that quantum computers have come closer to reality. Teleportation can be thought of as a quantum gate where input and output are the same. So, it's known that, if we improve this a little, the input and output could be produced in different forms. If changing the form of input and output like that is considered as a program, you have a programmable quantum gate. So, I think a quantum computer could be achieved by combining lots of those."

So basically, they've gotten closer to creating quantum logic gates. Not any closer to teleporting you to the surface of a planet, though.

Just look at the apparatus set up and trace the beam path. Then things will become clearer...