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…(instantaneous interaction at a distance) and quantum tunneling (a
quantum system can switch states without surmounting an energy barrier between). Using
these, a quantum computer can be built from very small, atomic sized, devices that can solve
classical computing “hard problems”, and even quantum problems that are classically
impossible to formulate …
https://www.wichita.edu/academics/engineering/aerospace/research/gafl-lab/documents/tutorial_rev_2.pdf