Efficient characterization of N-beam Gaussian fields through photon-number measurements: Quantum universal invariants
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| Autori principali: | , , , |
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| Natura: | Recurso digital |
| Lingua: | inglese |
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2025
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| _version_ | 1866901985838497792 |
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| author | Sudak, Nazarii Barasiński, Artur Peřina, Jan Černoch, Antonín |
| author_facet | Sudak, Nazarii Barasiński, Artur Peřina, Jan Černoch, Antonín |
| contents | <p>Quantum universal invariants of general N-beam Gaussian fields are investigated from the point of view of<br>fields’ intensity moments. A method that uniquely links these invariants, including the global and marginal<br>fields’ purities, to intensity moments is suggested. Determination of these invariants identifies the Gaussian states<br>including their quantum correlations. In particular, the Peres-Horodecki separability criterion is reformulated in<br>terms of quantum universal invariants, and consequently in terms of experimental intensity moments, offering a<br>practical tool for determining the entanglement or separability of these states. The approach is experimentally<br>demonstrated by determining the invariants of noisy symmetric three-beam Gaussian states using photon-number<br>resolved measurements. Furthermore, their entanglement properties are analyzed and characterized.</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_1103_5hnr-6jbf |
| institution | Zenodo |
| language | eng |
| publishDate | 2025 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Efficient characterization of N-beam Gaussian fields through photon-number measurements: Quantum universal invariants Sudak, Nazarii Barasiński, Artur Peřina, Jan Černoch, Antonín quantum universal invariants nonclassical states of light <p>Quantum universal invariants of general N-beam Gaussian fields are investigated from the point of view of<br>fields’ intensity moments. A method that uniquely links these invariants, including the global and marginal<br>fields’ purities, to intensity moments is suggested. Determination of these invariants identifies the Gaussian states<br>including their quantum correlations. In particular, the Peres-Horodecki separability criterion is reformulated in<br>terms of quantum universal invariants, and consequently in terms of experimental intensity moments, offering a<br>practical tool for determining the entanglement or separability of these states. The approach is experimentally<br>demonstrated by determining the invariants of noisy symmetric three-beam Gaussian states using photon-number<br>resolved measurements. Furthermore, their entanglement properties are analyzed and characterized.</p> |
| title | Efficient characterization of N-beam Gaussian fields through photon-number measurements: Quantum universal invariants |
| topic | quantum universal invariants nonclassical states of light |
| url | https://doi.org/10.1103/5hnr-6jbf |