Mathematical Physics and Quantum Field Theory
Electron. J. Diff. Eqns., Conf. 04, 2000, pp. 113-120.

Quantum Copying: A Review

Mark Hillery

Quantum information is stored in two-level quantum systems known as qubits. The no-cloning theorem states that the state of an unknown qubit cannot be copied. This is in contrast to classical information which can be copied. If one drops the requirement that the copies be perfect it is possible to design quantum copiers. This paper presents a short review of the theory of quantum copying.

Published July 12, 2000.
Mathematics Subject Classifications: 81P68.
Key words: Quantum computing, qubits, no-cloning theorem, quantum copying.

Show me the PDF file (98K), TEX file, and other files for this article.

Mark Hillery
Department of Physics and Astronomy
Hunter College of the City University of New York
695 Park Avenue
New York NY 10021

Return to the Proceedings of Conferences: Electr. J. Diff. Eqns.