Quantum fisher information of several qubitsin the superposition of A GHZ and two W stateswith arbitrary relative phase

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Küçük Resim

Tarih

2014-09

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

Springer/Plenum Publishers

Erişim Hakkı

info:eu-repo/semantics/closedAccess

Araştırma projeleri

Organizasyon Birimleri

Dergi sayısı

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
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