M. V. Volynets, V. N. Gorbachev, A. V. Zhulis, A. Ya. Kazakov, G. P. Sakharova, “Geometrical measure of entanglement for three-particle <i>W</i> states”, Kvantovaya Elektronika, 2007, Volume 37, Number 12,Pages <nobr>1102

Fifth Seminar in memory of D.N. Klyshko

Geometrical measure of entanglement for three-particle W states

M. V. Volynets^a, V. N. Gorbachev^a, A. V. Zhulis^a, A. Ya. Kazakov^b, G. P. Sakharova^a

^a The higher School of Printing and Media Technology
^b Saint-Petersburg State University of Aerospace Instrumentation

Abstract: The geometrical measure of entanglement of the W states is introduced and exact analytic expressions are obtained for it. Based on numerical calculations, the degree of entanglement is considered for some states of this class which are used as a quantum channel in problems of quantum theory of information.

PACS: 03.67.Mn, 03.67.Hk

Received: 05.07.2007