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Article Dans Une Revue PRX Quantum Année : 2022

Homodyne Detection of Non-Gaussian Quantum Steering

Résumé

Quantum correlations are at the core of current developments in quantum technologies. Certification protocols of entanglement and steering, suitable for continuous-variable non-Gaussian states are scarce and generally highly demanding from an experimental point of view. We propose a protocol based on Fisher information for witnessing steering in general continuous-variable bipartite states, through homodyne detection. It proves to be relevant for the detection of non-Gaussian steering in scenarios where witnesses based on Gaussian features like the covariance matrix are shown to fail.

Dates et versions

hal-03560331 , version 1 (07-02-2022)

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Carlos E. Lopetegui, Manuel Gessner, Matteo Fadel, Nicolas Treps, Mattia Walschaers. Homodyne Detection of Non-Gaussian Quantum Steering. PRX Quantum, 2022, 3 (3), pp.030347. ⟨10.1103/PRXQuantum.3.030347⟩. ⟨hal-03560331⟩
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