Distillation of entanglement between distant systems by repeated measurements on an entanglement mediator

G. Compagno, A. Messina, Hiromichi Nakazato, A. Napoli, Makoto Unoki, Kazuya Yuasa

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    Abstract

    A proposed purification method utilized to yield entangled states between distant systems was discussed. The extracted entangled states among systems that were located at separate places were applied to simple systems to show the potentiality of a measurement-based purification scheme. It was shown that the measurements of a two-level system could distill entangled states from the latter irrespective of the initial states of the two subsystems. It was found that the establishment of entanglement distillation relied on the successive interactions between the systems under consideration and the so-called 'mediator' quantum systems.

    Original languageEnglish
    Article number052316
    JournalPhysical Review A - Atomic, Molecular, and Optical Physics
    Volume70
    Issue number5 A
    DOIs
    Publication statusPublished - 2004 Nov

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    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics
    • Physics and Astronomy(all)

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