Quantum computers Definition and 60 Threads

Hi. Could somebody tell me how many floating point operations a reasonably advanced (say 1 million qubit) quantum computer could process if we ever could engineer one? I know this question will make quantum physics experts uneasy, since quantum computers don't process flops serially as in...

Will David Deutsch's famous quantum computers ever be realized? I personally look at MWI as a fairytale sciencefiction hypothesis, so in my opinion other universes DO NOT exist, but can still quantum computers become a reality in single universe terms?

Quantum Turing Machine NP-hard problems, such as the 'subset sum problem', or Travelling Salesman Problem (TSP) where n is large have lengthy solutions for a Turing Machine since n can be arbitarily set at a high value. Assume that the whole Universe were made into a Turing computer to solve...

Does anyone know what companies I can/should buy stock in if I want to invest in quantum computers?

I've recently read a few articles on the subject of quantum computers, and I'm curious to when they are going to be developed to the point that they are a recognisable way to process information. Do you think they will be in use within the next 50 years? and why?

This paper states that: This means that the upper bound of computability is "10^{120} ops on 10^{90} bits." Question: does this upper bound apply to quantum computers as well?

anyone know of any simulation programs that let you make quantum programs? It would be kinda cool write programs for a quantum computer.

When do you all think quantum computers will be a reality? Or I guess I should say when do you think they will be practical? And when this happens, do you think that Electrical Engineers and Computer Engineers will design them? Or do you think that there will be a completely new branch of...

Quantum computers? Are quantum computers depenent on the many worlds interpretations of QM? I ask these because i read somewhere about Max Tegmark and he said something about quantum computers wil be the first device to utilize the computing power of other universes.That the computer is using...

Hi everyone. I just wanted to start a new Thread on this interesting field of physics. I'll be glad to here your opinions, news and ... on this area. Thanks a lot :wink: