Prospects for quantum computing: Extremely doubtful

  title={Prospects for quantum computing: Extremely doubtful},
  author={M. Dyakonov},
  journal={arXiv: Quantum Physics},
  • M. Dyakonov
  • Published 2014
  • Physics, Mathematics
  • arXiv: Quantum Physics
  • The quantum computer is supposed to process information by applying unitary transformations to 2N complex amplitudes defining the state of N qubits. A useful machine needing N~103 or more, the number of continuous parameters describing the state of a quantum computer at any given moment is at least 21000 ~10300 which is much greater than the number of protons in the Universe. However, the theorists believe that the feasibility of large-scale quantum computing has been proved via the “threshold… CONTINUE READING
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