Detection of mode-intrinsic quantum entanglement Article Swipe
Carlos E. Lopetegui-Gonzalez
,
Mattia Walschaers
,
Nicolas Treps
,
Mathieu Isoard
·
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.1364/opticaq.560594
YOU?
·
· 2025
· Open Access
·
· DOI: https://doi.org/10.1364/opticaq.560594
Quantum correlations are at the core of quantum information processing and are necessary to achieve a quantum computational advantage. In the context of continuous-variable quantum systems, another necessary resource for quantum advantages is non-Gaussianity. In this work, we propose a witness based on previously known relations between metrological power and quantum correlations, to detect a strong form of entanglement that only non-Gaussian states possess and that cannot be undone by passive optical operations, i.e., entanglement in all mode bases. The strength of our witness is two-fold: it only requires measurements in one basis to check entanglement in any arbitrary mode basis; it can be made applicable experimentally using homodyne measurements and without requiring a full tomography of the state.
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- https://doi.org/10.1364/opticaq.560594
- OA Status
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- Cited By
- 2
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- 72
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https://openalex.org/W4410397350Canonical identifier for this work in OpenAlex
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https://doi.org/10.1364/opticaq.560594Digital Object Identifier
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Detection of mode-intrinsic quantum entanglementWork title
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articleOpenAlex work type
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enPrimary language
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2025Year of publication
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2025-05-15Full publication date if available
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Carlos E. Lopetegui-Gonzalez, Mattia Walschaers, Nicolas Treps, Mathieu IsoardList of authors in order
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https://doi.org/10.1364/opticaq.560594Publisher landing page
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YesWhether a free full text is available
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diamondOpen access status per OpenAlex
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https://doi.org/10.1364/opticaq.560594Direct OA link when available
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Quantum entanglement, Mode (computer interface), Quantum, Quantum mechanics, Physics, Quantum discord, Theoretical physics, Computer science, Operating systemTop concepts (fields/topics) attached by OpenAlex
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2Total citation count in OpenAlex
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2025: 2Per-year citation counts (last 5 years)
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