Non-Gaussian quantum steering produced by quasi-phase-matching third-harmonic generation
With the rapid advancements in fields such as quantum entanglement distillation and quantum metrology, the limitations of Gaussian states in certain applications within quantum computing and information processing have come to the forefront. This has necessitated the development of methods to prepar...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2025-01-01
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| Series: | New Journal of Physics |
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| Online Access: | https://doi.org/10.1088/1367-2630/adc6ac |
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| _version_ | 1850267364179836928 |
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| author | S Q Ma D Y Zhang Y Zhao Y B Yu G R Jin A X Chen |
| author_facet | S Q Ma D Y Zhang Y Zhao Y B Yu G R Jin A X Chen |
| author_sort | S Q Ma |
| collection | DOAJ |
| description | With the rapid advancements in fields such as quantum entanglement distillation and quantum metrology, the limitations of Gaussian states in certain applications within quantum computing and information processing have come to the forefront. This has necessitated the development of methods to prepare non-Gaussian states, which exhibit negative Wigner values and are indispensable for enhancing the capabilities of quantum systems in these tasks. Wigner negativity, a renowned indicator of nonclassicality, is integral to quantum computing and the simulation of continuous-variable systems. It is also employed to discern non-Gaussian characteristics in optical fields. We demonstrate Gaussian Einstein–Podolsky–Rosen (EPR) steering between second and third harmonic generations prior to performing non-Gaussian operations. Inducing non-Gaussian attributes in the second harmonic is achieved by coupling the third harmonic with a vacuum state and subtracting photons via a beamsplitter. The Wigner stochastic trajectory approach is utilized to investigate the non-Gaussian properties of both the second and third harmonics. By varying the coupling parameter lambda λ and the ratio of nonlinear coupling constants $\kappa_2/\kappa_1$ , symmetric and asymmetric non-Gaussian EPR steering can be observed. This proposed scheme for non-Gaussian EPR steering holds promise for applications in quantum computing and quantum information processing. |
| format | Article |
| id | doaj-art-ad97e5ff34284e90b237a76009e51bd6 |
| institution | OA Journals |
| issn | 1367-2630 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj-art-ad97e5ff34284e90b237a76009e51bd62025-08-20T01:53:49ZengIOP PublishingNew Journal of Physics1367-26302025-01-0127404300610.1088/1367-2630/adc6acNon-Gaussian quantum steering produced by quasi-phase-matching third-harmonic generationS Q Ma0D Y Zhang1Y Zhao2Y B Yu3https://orcid.org/0000-0003-0866-8892G R Jin4https://orcid.org/0000-0001-7659-3074A X Chen5https://orcid.org/0000-0002-7953-3752Zhejiang Key Laboratory of Quantum State Control and Optical Field Manipulation, Department of Physics, Zhejiang Sci-Tech University , Hangzhou 310018, People’s Republic of ChinaZhejiang Key Laboratory of Quantum State Control and Optical Field Manipulation, Department of Physics, Zhejiang Sci-Tech University , Hangzhou 310018, People’s Republic of ChinaZhejiang Key Laboratory of Quantum State Control and Optical Field Manipulation, Department of Physics, Zhejiang Sci-Tech University , Hangzhou 310018, People’s Republic of ChinaZhejiang Key Laboratory of Quantum State Control and Optical Field Manipulation, Department of Physics, Zhejiang Sci-Tech University , Hangzhou 310018, People’s Republic of ChinaZhejiang Key Laboratory of Quantum State Control and Optical Field Manipulation, Department of Physics, Zhejiang Sci-Tech University , Hangzhou 310018, People’s Republic of ChinaZhejiang Key Laboratory of Quantum State Control and Optical Field Manipulation, Department of Physics, Zhejiang Sci-Tech University , Hangzhou 310018, People’s Republic of ChinaWith the rapid advancements in fields such as quantum entanglement distillation and quantum metrology, the limitations of Gaussian states in certain applications within quantum computing and information processing have come to the forefront. This has necessitated the development of methods to prepare non-Gaussian states, which exhibit negative Wigner values and are indispensable for enhancing the capabilities of quantum systems in these tasks. Wigner negativity, a renowned indicator of nonclassicality, is integral to quantum computing and the simulation of continuous-variable systems. It is also employed to discern non-Gaussian characteristics in optical fields. We demonstrate Gaussian Einstein–Podolsky–Rosen (EPR) steering between second and third harmonic generations prior to performing non-Gaussian operations. Inducing non-Gaussian attributes in the second harmonic is achieved by coupling the third harmonic with a vacuum state and subtracting photons via a beamsplitter. The Wigner stochastic trajectory approach is utilized to investigate the non-Gaussian properties of both the second and third harmonics. By varying the coupling parameter lambda λ and the ratio of nonlinear coupling constants $\kappa_2/\kappa_1$ , symmetric and asymmetric non-Gaussian EPR steering can be observed. This proposed scheme for non-Gaussian EPR steering holds promise for applications in quantum computing and quantum information processing.https://doi.org/10.1088/1367-2630/adc6acnon-Gaussianquantum steeringquasi-phase-matchingthird-harmonic generation |
| spellingShingle | S Q Ma D Y Zhang Y Zhao Y B Yu G R Jin A X Chen Non-Gaussian quantum steering produced by quasi-phase-matching third-harmonic generation New Journal of Physics non-Gaussian quantum steering quasi-phase-matching third-harmonic generation |
| title | Non-Gaussian quantum steering produced by quasi-phase-matching third-harmonic generation |
| title_full | Non-Gaussian quantum steering produced by quasi-phase-matching third-harmonic generation |
| title_fullStr | Non-Gaussian quantum steering produced by quasi-phase-matching third-harmonic generation |
| title_full_unstemmed | Non-Gaussian quantum steering produced by quasi-phase-matching third-harmonic generation |
| title_short | Non-Gaussian quantum steering produced by quasi-phase-matching third-harmonic generation |
| title_sort | non gaussian quantum steering produced by quasi phase matching third harmonic generation |
| topic | non-Gaussian quantum steering quasi-phase-matching third-harmonic generation |
| url | https://doi.org/10.1088/1367-2630/adc6ac |
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