Quantum Fisher Information of Bipartitions of W States

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Ozaydin F., Altintas A. A., Yesilyurt C., Bugu S., Erol V.

ACTA PHYSICA POLONICA A, cilt.127, sa.4, ss.1233-1235, 2015 (SCI-Expanded)

• Yayın Türü: Makale / Tam Makale
• Cilt numarası: 127 Sayı: 4
• Basım Tarihi: 2015
• Doi Numarası: 10.12693/aphyspola.127.1233
• Dergi Adı: ACTA PHYSICA POLONICA A
• Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
• Sayfa Sayıları: ss.1233-1235
• Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
• İstanbul Üniversitesi Adresli: Hayır

Özet

We study the quantum Fisher information (QFI) of W states and W-like states under decoherence. In particular, we find that on the contrary to amplitude damping and depolarizing decoherence, a W-like state of 3 qubits obtained by discarding 1 qubit of a genuine W state of 4 qubits is more robust than a genuine W state of 3 qubits under amplitude amplifying and phase damping decoherence.