Related papers: Relating the Entanglement and Optical Nonclassicality of Multimode States of a Bosonic Quantum Field

Relating the Entanglement and Optical Nonclassicality of Multimode States of a Bosonic Quantum Field

URL: http://arxiv.org/abs/2004.11782v2
Date: Wed, 23 Sep 2020 20:46:12 GMT
Title: Relating the Entanglement and Optical Nonclassicality of Multimode States of a Bosonic Quantum Field
Authors: Anaelle Hertz, Nicolas J. Cerf and Stephan De Bi\`evre
Abstract summary: We provide bounds relating entanglement measures with optical nonclassicality measures. We infer strong bounds on the entanglement that can be produced with an optically nonclassical state impinging on a beam splitter.
Score: 0.0
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: The quantum nature of the state of a bosonic quantum field manifests itself in its entanglement, coherence, or optical nonclassicality which are each known to be resources for quantum computing or metrology. We provide quantitative and computable bounds relating entanglement measures with optical nonclassicality measures. These bounds imply that strongly entangled states must necessarily be strongly optically nonclassical. As an application, we infer strong bounds on the entanglement that can be produced with an optically nonclassical state impinging on a beam splitter. For Gaussian states, we analyze the link between the logarithmic negativity and a specific nonclassicality witness called "quadrature coherence scale".

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