How to share a continuous-variable quantum secret by optical interferometry

Tomáš Tyc, Barry C. Sanders

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    90 Citations (Scopus)
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    We develop the theory of continuous-variable quantum secret sharing and propose its interferometric realization using passive and active optical elements. In the ideal case of infinite squeezing, a fidelity F of unity can be achieved with respect to reconstructing the quantum secret. We quantify the reduction in fidelity for the (2,3) threshold scheme due to finite squeezing and establish the condition for verifying that genuine quantum secret sharing has occurred.
    Original languageEnglish
    Article number042310
    Pages (from-to)1-5
    Number of pages5
    JournalPhysical Review A - Atomic, Molecular, and Optical Physics
    Issue number4
    Publication statusPublished - 2002

    Bibliographical note

    Copyright 2002 by The American Physical Society. Reprinted from Physical review A.


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