Quantum benchmark for teleportation and storage of squeezed states

Gerardo Adesso, Giulio Chiribella

    Research output: Contribution to journalArticleResearchpeer-review

    39 Citations (Scopus)

    Abstract

    We provide a quantum benchmark for teleportation and storage of single-mode squeezed states with zero displacement and a completely unknown degree of squeezing along a given direction. For pure squeezed input states, a fidelity higher than 81.5% has to be attained in order to outperform any classical strategy based on an estimation of the unknown squeezing and repreparation of squeezed states. For squeezed thermal input states, we derive an upper and a lower bound on the classical average fidelity which tighten for moderate degree of mixedness. These results enable a critical discussion of recent experiments with squeezed light. © 2008 The American Physical Society.
    Original languageEnglish
    Article number170503
    JournalPhysical Review Letters
    Volume100
    Issue number17
    DOIs
    Publication statusPublished - 29 Apr 2008

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