It is proposed that the state space of a quantum object with a complicated discrete spectrum can be used as a basis for multiqubit recording and processing of information in a quantum computer. As an example, nuclear spin 3/2 is considered. The possibilities of writing and reading two quantum bits of information, preparation of the initial state, implementation of the "rotation" and "controlled negation" operations, which are sufficient for constructing any algorithms, are demonstrated.
@article{arxiv.quant-ph/9912047,
title = {Multiqubit Spin},
author = {Alexander R. Kessel and Vladimir L. Ermakov},
journal= {arXiv preprint arXiv:quant-ph/9912047},
year = {2009}
}
Comments
7 pages, PostScript, no figures; translation of Pis'ma Zh. Eksp. Teor. Fiz. 70, No. 1, pp. 59-63, 10 July 1999; (Submitted 29 April 1999; resubmitted 2 June 1999)