Dynamics of Quantum Fisher Information in Two Component Bose-Einstein Condensate

We investigate quantum Fisher information dynamics in two component Bose-Einstein condensate interacting spins with an external field. Approximate analytical expressions of quantum Fisher information is presented. Our analysis shows that quantum Fisher information is controlled by adjusting the stre...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Veröffentlicht in:	International journal of theoretical physics 2012-05, Vol.51 (5), p.1323-1328
Hauptverfasser:	Li, Song-Song, Liu, Zhen-Ya, Xiao, Yong-Jun
Format:	Artikel
Sprache:	eng
Schlagworte:	Elementary Particles Mathematical and Computational Physics Physics Physics and Astronomy Quantum Field Theory Quantum Physics Theoretical
Online-Zugang:	Volltext
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	We investigate quantum Fisher information dynamics in two component Bose-Einstein condensate interacting spins with an external field. Approximate analytical expressions of quantum Fisher information is presented. Our analysis shows that quantum Fisher information is controlled by adjusting the strength of the external field and the total atomic number. It is shown that the maximal mean quantum Fisher information is occurred and the phase estimation is enhanced to the Heisenberg limit under some conditions.
ISSN:	0020-7748 1572-9575
DOI:	10.1007/s10773-011-1008-3