Experimental proposal of switched "delayed-choice" for entanglement swapping

Thomas Jennewein, Caslav Brukner, Markus Aspelmeyer, Anton Zeilinger

    Publications: Contribution to journalArticlePeer Reviewed

    Abstract

    Entanglement swapping is a fascinating generalization of quantum teleportation, where the entanglement between pairs is interchanged leading to entanglement between particles that never interacted. Extending the idea of Peres, we propose an experimental setup where the choice which quantum systems are finally entangled is made at a time after they have been registered and do not even exist anymore. Our proposed setup can be used in Third-Man Quantum Cryptography wherea third party can control whether Alice and Bob are able to communicate secretly, but he does know their secret key. Œ World Scientific Publishing Company.
    Original languageEnglish
    Pages (from-to)73-79
    Number of pages7
    JournalInternational Journal of Quantum Information (IJQI)
    Volume3
    Issue number1
    DOIs
    Publication statusPublished - 2005

    Austrian Fields of Science 2012

    • 103026 Quantum optics

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