Quantum fisher information of several qubitsin the superposition of A GHZ and two W stateswith arbitrary relative phase
Yükleniyor...
Tarih
2014-09
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Springer/Plenum Publishers
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
We study the quantum Fisher information (QFI) of a system of several particles which is in a superposition of a GHZ and two W states with arbitrary relative phase. We show that as the number of particles increases from 3 to 4, the behavior of QFI drastically changes. We also show how the dependence of QFI on the relative phase weakens as the number of particles increases. We also analyze the QFI for the state for several instances of N due to the change of the relative phases.
Açıklama
Anahtar Kelimeler
Quantum Fisher information, GHZ states, W states, Heisenberg limit, Limit, Model
Kaynak
International Journal of Theoretical Physics
WoS Q Değeri
Q3
Scopus Q Değeri
Q3
Cilt
53
Sayı
9
Künye
Özaydın, F., Altıntaş, A. A., Buğu, S., Yeşilyurt, C. & Arık, M. (2014). Quantum fisher information of several qubitsin the superposition of A GHZ and two W stateswith arbitrary relative phase. International Journal of Theoretical Physics, 53(9), 3219-3225. doi:10.1007/s10773-014-2119-4
