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

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Date

2014-09

Author

Özaydın, Fatih
Altıntaş, Azmi Ali
Buğu, Sinan
Yeşilyurt, Can
Arık, Metin

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Citation

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

Abstract

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.

Source

International Journal of Theoretical Physics

Volume

53

Issue

9

URI

https://hdl.handle.net/11729/519
http://dx.doi.org/10.1007/s10773-014-2119-4

Collections

  • FEF - Makale Koleksiyonu | Enformasyon Teknolojileri Bölümü / Department of Information Technologies [67]
  • Scopus İndeksli Makale Koleksiyonu [792]
  • WoS İndeksli Makale Koleksiyonu [810]



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