Transcription
Is the no-cloning theorem.
No-cloning theorem is just one of many different pieces of quantum computing. If you have a quantum bit of information, you can't just make as many copies of it as you'd like. You can't make copies. We can digitize a photograph making little pixels and then make each pixel exactly the same as another pixel on a hard drive or a USB stick or something and then you get an exact copy of the previous picture. Absolutely right. No-cloning theorem says that for quantum information, you can't do that.
Why wouldn't you be able to do that with a qubit as opposed to bits and bytes which we're able to do?
As soon as you read a qubit, it is destroyed.
That makes sense because it existed in a superposition to begin with.
Yes.
Right. Go check.
So the moment that you actually realize the superposition, all other positions are made null and void at that particular instance.
That's a great way to describe it.