Preparation and Analysis of Two-Dimensional Four-Qubit Entangled States with Photon Polarization and Spatial Path
Entanglement states serve as the central resource for a number of important applications in quantum information science, including quantum key distribution, quantum precision measurement, and quantum computing. In pursuit of more promising applications, efforts have been made to generate entangled s...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-09-01
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| Series: | Entropy |
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| Online Access: | https://www.mdpi.com/1099-4300/24/10/1388 |
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| author | Jiaqiang Zhao Meijiao Wang Bing Sun Lianzhen Cao Yang Yang Xia Liu Qinwei Zhang Huaixin Lu Kellie Ann Driscoll |
| author_facet | Jiaqiang Zhao Meijiao Wang Bing Sun Lianzhen Cao Yang Yang Xia Liu Qinwei Zhang Huaixin Lu Kellie Ann Driscoll |
| author_sort | Jiaqiang Zhao |
| collection | DOAJ |
| description | Entanglement states serve as the central resource for a number of important applications in quantum information science, including quantum key distribution, quantum precision measurement, and quantum computing. In pursuit of more promising applications, efforts have been made to generate entangled states with more qubits. However, the efficient creation of a high-fidelity multiparticle entanglement remains an outstanding challenge due to the difficulty that increases exponentially with the number of particles. We design an interferometer that is capable of coupling the polarization and spatial paths of photons and prepare 2-D four-qubit GHZ entanglement states. Using quantum state tomography, entanglement witness, and the violation of Ardehali inequality against local realism, the properties of the prepared 2-D four-qubit entangled state are analyzed. The experimental results show that the prepared four-photon system is an entangled state with high fidelity. |
| first_indexed | 2024-03-09T20:14:55Z |
| format | Article |
| id | doaj.art-d10031768a0c4b3599d8ef7ebbb168fe |
| institution | Directory Open Access Journal |
| issn | 1099-4300 |
| language | English |
| last_indexed | 2024-03-09T20:14:55Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Entropy |
| spelling | doaj.art-d10031768a0c4b3599d8ef7ebbb168fe2023-11-24T00:02:50ZengMDPI AGEntropy1099-43002022-09-012410138810.3390/e24101388Preparation and Analysis of Two-Dimensional Four-Qubit Entangled States with Photon Polarization and Spatial PathJiaqiang Zhao0Meijiao Wang1Bing Sun2Lianzhen Cao3Yang Yang4Xia Liu5Qinwei Zhang6Huaixin Lu7Kellie Ann Driscoll8School of Physics and Electronic Information, Weifang University, Weifang 261061, ChinaSchool of Physics and Electronic Information, Weifang University, Weifang 261061, ChinaSchool of Physics and Electronic Information, Weifang University, Weifang 261061, ChinaSchool of Physics and Electronic Information, Weifang University, Weifang 261061, ChinaSchool of Physics and Electronic Information, Weifang University, Weifang 261061, ChinaSchool of Physics and Electronic Information, Weifang University, Weifang 261061, ChinaSchool of Physics and Electronic Information, Weifang University, Weifang 261061, ChinaSchool of Physics and Electronic Information, Weifang University, Weifang 261061, ChinaSchool of Physics and Electronic Information, Weifang University, Weifang 261061, ChinaEntanglement states serve as the central resource for a number of important applications in quantum information science, including quantum key distribution, quantum precision measurement, and quantum computing. In pursuit of more promising applications, efforts have been made to generate entangled states with more qubits. However, the efficient creation of a high-fidelity multiparticle entanglement remains an outstanding challenge due to the difficulty that increases exponentially with the number of particles. We design an interferometer that is capable of coupling the polarization and spatial paths of photons and prepare 2-D four-qubit GHZ entanglement states. Using quantum state tomography, entanglement witness, and the violation of Ardehali inequality against local realism, the properties of the prepared 2-D four-qubit entangled state are analyzed. The experimental results show that the prepared four-photon system is an entangled state with high fidelity.https://www.mdpi.com/1099-4300/24/10/1388quantum informationentanglementspontaneous down conversionquantum state tomographyentanglement witnessArdehali inequality |
| spellingShingle | Jiaqiang Zhao Meijiao Wang Bing Sun Lianzhen Cao Yang Yang Xia Liu Qinwei Zhang Huaixin Lu Kellie Ann Driscoll Preparation and Analysis of Two-Dimensional Four-Qubit Entangled States with Photon Polarization and Spatial Path Entropy quantum information entanglement spontaneous down conversion quantum state tomography entanglement witness Ardehali inequality |
| title | Preparation and Analysis of Two-Dimensional Four-Qubit Entangled States with Photon Polarization and Spatial Path |
| title_full | Preparation and Analysis of Two-Dimensional Four-Qubit Entangled States with Photon Polarization and Spatial Path |
| title_fullStr | Preparation and Analysis of Two-Dimensional Four-Qubit Entangled States with Photon Polarization and Spatial Path |
| title_full_unstemmed | Preparation and Analysis of Two-Dimensional Four-Qubit Entangled States with Photon Polarization and Spatial Path |
| title_short | Preparation and Analysis of Two-Dimensional Four-Qubit Entangled States with Photon Polarization and Spatial Path |
| title_sort | preparation and analysis of two dimensional four qubit entangled states with photon polarization and spatial path |
| topic | quantum information entanglement spontaneous down conversion quantum state tomography entanglement witness Ardehali inequality |
| url | https://www.mdpi.com/1099-4300/24/10/1388 |
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