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Article Dans Une Revue Quantum Sci.Technol. Année : 2024

Certification of non-Gaussian Einstein-Podolsky-Rosen Steering

Mingsheng Tian
  • Fonction : Auteur
Zihang Zou
  • Fonction : Auteur
Qiongyi He
  • Fonction : Auteur
Feng-Xiao Sun
  • Fonction : Auteur
Yu Xiang
  • Fonction : Auteur

Résumé

Non-Gaussian quantum states are a known necessary resource for reaching a quantum advantage and for violating Bell inequalities in continuous variable systems. As one kind of manifestation of quantum correlations, Einstein-Podolsky-Rosen (EPR) steering enables verification of shared entanglement even when one of the subsystems is not characterized. However, how to detect and classify such an effect for non-Gaussian states is far from being well understood. Here, we present an efficient non-Gaussian steering criterion based on the high-order observables and conduct a systematic investigation into the hierarchy of non-Gaussian steering criteria. Moreover, we apply our criterion to three experimentally-relevant non-Gaussian states under realistic conditions and, in particular, propose a feasible scheme to create multi-component cat states with tunable size by performing a suitable high-order quadrature measurement on the steering party. Our work reveals the fundamental characteristics of non-Gaussianity and quantum correlations, and offers new insights to explore their applications in quantum information processing.

Dates et versions

hal-04199386 , version 1 (07-09-2023)

Identifiants

Citer

Mingsheng Tian, Zihang Zou, Da Zhang, David Barral, K. Bencheikh, et al.. Certification of non-Gaussian Einstein-Podolsky-Rosen Steering. Quantum Sci.Technol., 2024, 9 (1), pp.015021. ⟨10.1088/2058-9565/ad124b⟩. ⟨hal-04199386⟩
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