Entanglement dynamics of three-qubit states in noisy channels
We study entanglement dynamics of the three-qubit systemwhich is initially prepared in pure Greenberger-Horne-Zeilinger(GHZ) or W state and transmitted through one of the Pauli channels$\sigma_z$, $\sigma_x$, $\sigma_y$or the depolarizing channel.With the help of the lower bound for three-qubit conc...
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| Hauptverfasser: | , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
14 June 2010
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| In: |
The European physical journal. D, Atomic, molecular, optical and plasma physics
Year: 2010, Jahrgang: 60, Heft: 2, Pages: 397-403 |
| ISSN: | 1434-6079 |
| DOI: | 10.1140/epjd/e2010-00189-1 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1140/epjd/e2010-00189-1
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| Verfasserangaben: | M. Siomau and S. Fritzsche |
| Zusammenfassung: | We study entanglement dynamics of the three-qubit systemwhich is initially prepared in pure Greenberger-Horne-Zeilinger(GHZ) or W state and transmitted through one of the Pauli channels$\sigma_z$, $\sigma_x$, $\sigma_y$or the depolarizing channel.With the help of the lower bound for three-qubit concurrence we showthat the W state preserves more entanglement than the GHZ state intransmission through the Pauli channel $\sigma_z$. For the Paulichannels $\sigma_x$, $\sigma_y$and the depolarizing channel,however, the entanglement of the GHZ state is more resistant againstdecoherence than the W-type entanglement. We also briefly discusshow the accuracy of the lower bound approximation depends on therank of the density matrix under consideration. |
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| Beschreibung: | Gesehen am 07.08.2023 |
| Beschreibung: | Online Resource |
| ISSN: | 1434-6079 |
| DOI: | 10.1140/epjd/e2010-00189-1 |