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Article Dans Une Revue Physical Review Letters Année : 2023

Hierarchy of Genuine Tripartite Non-Gaussian Entanglement

Da Zhang
David Barral
Yanpeng Zhang
  • Fonction : Auteur
Min Xiao
  • Fonction : Auteur

Résumé

Triple-photon states generated by three-mode spontaneous parametric down-conversion are the paradigm of unconditional non-Gaussian states, essential assets for quantum advantage. How to fully characterize their non-Gaussian entanglement remains however elusive. We propose here a hierarchy of sufficient and necessary conditions for separability of the broad family of spontaneously-generated three-mode non-Gaussian states. We further derive state-of-the-art conditions for genuine tripartite non-Gaussian entanglement, the strongest class of entanglement. We apply our criteria to triple-photon states revealing that they are fully inseparable and genuinely entangled in moments of order 3n. Our results establish a systematic framework for characterizing the entanglement of triple-photon states and thus fostering their application in quantum information protocols.

Dates et versions

hal-03691740 , version 1 (09-06-2022)

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Citer

Da Zhang, David Barral, Yanpeng Zhang, Min Xiao, Kamel Bencheikh. Hierarchy of Genuine Tripartite Non-Gaussian Entanglement. Physical Review Letters, 2023, 130 (9), pp.093602. ⟨hal-03691740⟩
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