Basically it will dramatically increase parallel processing, on the order of a few magnitudes. It should be used to properly simulate climate and organic systems. It will also give a tremendous boost to cryptography. However there's nothing on special a quantum computer can do that a normal, electronic computer couldn't given enough time, really. It's just that some things were mathematically very difficult before, due to the nature of standard computing, that are not so with quantum computers.

I can see it having commercial use if we get it working on small scales. Programmers will find a way to use it and then the average consumer could greatly benefit of increased parallel processing. In essence it should be about the same thing as the single-core to multi-core transition.

Oh, and if you go by the ME codex it can be used to parallel-process hundreds of "bot" applications and create true artificial intelligence.

...

Of course nature can still pull a "screw you" on us and stop altogether computation advances fifteen, twenty years from now. Recently I read that some scientists said it was very possible, even likely, that standard thermodynamics is going to soon troll us this way. 

Right now it's practically useless... right?

NOT THE EXISTING NORMAL!!! THE ENTIRE UNIVERSE WILL BE DESTROYED!!!!!!1

So technically if they make a quantum processor for the average consumer to put in their computer then basically that computer would be near limitless? I mean what software would be made to actually use this that the average consumer would want to download, there's really nothing. It'd be like having a computer that you would never have to replace the CPU, ever?

How much heat would something like this put off?

Maybe... Maybe... We are all living inside a world that has be created by a Quantum computer. Maybe we are all just part of a program called "Quantum Sims".

 One process to make a Quantum computer would take near - 100 celsius degrees to create. So the heat part isn't the problem. This isn't something you would put in your home. Some sorta network, cloud service would have to be created. 

No because it relies on quantum physics there is a degree of uncertainty in any calculation that you do with a quantum computer so you basically have a CPU that can work out really complicated things instantly but for every day things you would get math errors that cause all sorts of problems.

For example the on a nomal computer will always give you 10 / 6 = 1.666666666666667, a quantum computer might give you 1.666666666666666 and 1.666666666666668 and 1.666666666666667. Then the possible anwers would be quickly checked by working back from the possible answers. The advantage of a quantum computer is that in the same time it could make that calculation it could also work out the average temperature per hour of a location using 20 years of data for a sensor that records the tempreture every 10 minutes (an increadibly large dataset) or super complex mathmatical functions. Things that would take a long time on an ordinary CPUs. Of course all of this is theoretical, but a quantum computer is not just a really fast version of a normal CPU it is a totally different kind of computing.

Also a quntum CPU wouldn't just be able to do any calculation instantly, a 10-qubit quantum computer is not very useful a 100-qubit could do more, etc. 

This thread just proves that people in general should not have a discussion on quantum mechanics.

How I understood it, s that by 'looking' at the elctron, you have to interact with it in order to detect it, and thus, you disrupt it.

Still, phyiscs is trippy shit.