These types of computers can figure out problems that your normal computer can't figure out quickly, or even can't figure out at all. Some problems that take years will now be figured out in seconds if we can have them work together with the fast computers we have now.
This computer can be built to figure out these problems because it uses a different way to use the numbers 1 or 0 to talk with other parts of the computer. Instead of a normal computer, you can have either the 1 or the 0 (or yes or no), this type of computer holds the chance that it is carrying a 1 or 0. So there's a chance that it is 1, and a chance that it is 0. This is important because when this piece is talking to another part of the computer, they work together when we are asking it a question, to give us the right answer, faster.