Quantum evolution by discrete measurements

Roa L.; de Guevara, MLL; Delgado, A.; Olivares-Renteria, G; Klimov, AB

Abstract

In this article we review two ways of driving a quantum system to a known pure state via a sequence discrete of von Neumann measurements. The first of them assumes that the initial state of the system is unknown, and the evolution is attained only with the help of two non-commuting observables. For this method, the overall success probability is maximized when the eigentstates of the involved observables constitute mutually unbiased bases. The second method assumes the initial state is known and it uses N observables which are consecutively measured to make the state of the system approach the target state. The probability of success of this procedure converges to 1 as the number of observables increases. © 2007 IOP Publishing Ltd.

Más información

Título según WOS: Quantum evolution by discrete measurements
Título según SCOPUS: Quantum evolution by discrete measurements
Título de la Revista: JOURNAL OF PHYSICS: CONFERENCE SERIES
Volumen: 84
Número: 1
Editorial: IOP PUBLISHING LTD
Fecha de publicación: 2007
Idioma: English
URL: http://stacks.iop.org/1742-6596/84/i=1/a=012017?key=crossref.f3646c1f9beb4643fe6e9a6ba8660f59
DOI:

10.1088/1742-6596/84/1/012017

Notas: ISI, SCOPUS