Homodyne detection of non-Gaussian quantum steering
- URL: http://arxiv.org/abs/2201.11439v2
- Date: Mon, 5 Dec 2022 10:13:50 GMT
- Title: Homodyne detection of non-Gaussian quantum steering
- Authors: Carlos E. Lopetegui, Manuel Gessner, Matteo Fadel, Nicolas Treps,
Mattia Walschaers
- Abstract summary: We propose a protocol based on Fisher information for witnessing steering in general continuous-variable bipartite states.
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.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: 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.
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