INVESTIGADORES
OSENDA Omar
artículos
Título:
Entanglement of formation for one-dimensional magnetic systems with defects
Autor/es:
ZHEN HUANG , OMAR OSENDA AND SABRE KAIS
Revista:
PHYSICS LETTERS A
Referencias:
Año: 2004 vol. 322 p. 137 - 145
ISSN:
0375-9601
Resumen:
We present a study of the entanglement of formation for one-dimensional
magnetic systems with defects. The concurrence was used as a measure of
entanglement. Rather than locating the impurity at one site in the
chain, there is a Gaussian distribution of disorder near a particular
location. We demonstrate that the entanglement can be tuned by varying
the strength of the external magnetic field and the distribution of
impurities. The concurrence is a maximum close to the critical point,
where a quantum phase transition occurs, and for certain parameters can
be tuned to zero above the critical point.
