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Tomografie eines Quantenzustands – Verschränkung und Reinheit

Quantum state tomography – entanglement and purity

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Zusammenfassung

Es wird die experimentelle Herstellung und Quantenzustandstomografie eines Acht-Teilchen-verschränkten Zustands in einem Ionenfallenquantencomputer diskutiert. Die so gewonnene vollständige quantenmechanische Beschreibung des Zustands dient nun weiteren Untersuchungen. Insbesondere werden Güte und Reinheit des komplexen Zustands berechnet. Darüber hinaus wird nachgewiesen, dass der Zustand verschränkt ist.

Summary

We discuss the experimental generation and quantum state tomography of an entangled state of eight trapped ions. Based on the complete description of the complex quantum state in terms of the density matrix, we analyze its fidelity and purity. Furthermore, we show that this state carries genuine eight particle entanglement.

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Authors and Affiliations

  1. Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, Innsbruck, Austria

    O. Gühne & H. Häffner

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  1. O. Gühne
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  2. H. Häffner
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Gühne, O., Häffner, H. Tomografie eines Quantenzustands – Verschränkung und Reinheit. Elektrotech. Inftech. 124, 131–136 (2007). https://doi.org/10.1007/s00502-007-0431-x

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  • DOI: https://doi.org/10.1007/s00502-007-0431-x

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