When will we have a quantum computer?
Quantum Physics
2019-03-27 v1
Abstract
At a given moment, the state of the hypothetical quantum computer with N qubits is characterized by 2^N quantum amplitudes, which are complex continuous variables restricted by the normalization condition only. Their values cannot be arbitrary, they must be under our control. For moderate N = 1000, the number of quantum amplitudes greatly exceeds the number of particles in the Universe. Thus the answer to the question in title is: When physicists and engineers will learn to keep under control this number of continuous parameters.
Cite
@article{arxiv.1903.10760,
title = {When will we have a quantum computer?},
author = {M. I. Dyakonov},
journal= {arXiv preprint arXiv:1903.10760},
year = {2019}
}
Comments
4 pages, Talk at the conference "Future trends in microelectronics", Sardinia (2018). To be published in Special issue of Solid State Electronics (2019)