Conversely , this suggests that it might be possible to find quantum systems of size N which physically compute the answers to problems which classically require 2 bits to solve .
This is exponentially many numbers in N , so simulating quantum mechanics on a computer requires exponential resources .
This suggests that it might be possible to find quantum systems of size N which physically compute the answers to problems which classically require 2 bits to solve .
This is exponentially many numbers in N , so simulating quantum mechanics on a computer requires exponential resources .