Behavior of quantum fisher information of bell pairs under decoherence channels
Yükleniyor...
Dosyalar
Tarih
2014-02
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Polish Acad Sciences Inst Physics
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Quantum Fisher information has recently been an essential tool for analyzing the phase sensitivity of the quantum states in various quantum tasks, requiring high precision, such as quantum clock synchronization, positioning and many applications which include quantum interferometers. Due to the interactions with the environment, all quantum systems are subject to various decoherence effects. Therefore the research on quantum Fisher information under decoherence has been recently attracting more attention. In this work, analyzing the quantum Fisher information, we study the phase sensitivity of bipartite quantum correlations, in particular four Bell pairs amplitude damping channels. For a specific Bell state we arrive at similar results of Greenberger-Horne-Zeilinger (GHZ) states (as expected). For the other three Bell states, we present our results which point the interesting behavior of quantum Fisher information with respect to the decoherence rate. We also find the regions where the quantum Fisher information exhibits discontinuities.
Açıklama
Anahtar Kelimeler
States, Amplitude damping, Decoherence effects, Fisher information, Greenberger-Horne-Zeilinger, Phase sensitivity, Quantum clock synchronizations, Quantum correlations, Quantum interferometer, Quantum electronics, Quantum optics, Fisher information matrix
Kaynak
Acta Physica Polonica A
WoS Q Değeri
Q4
Scopus Q Değeri
Q4
Cilt
125
Sayı
2
Künye
Özaydın, F., Altıntaş, A. A., Buğu, S. & Yeşilyurt, C. (2014). Behavior of quantum fisher information of bell pairs under decoherence channels. Acta Physica Polonica A, 125(2), 606-607. doi:10.12693/APhysPolA.125.606