Realizing a Compact, High-Fidelity, Telecom-Wavelength Source of Multipartite Entangled Photons
Multipartite entangled states are an essential building block for advanced quantum networking applications. Realizing such tasks in practice puts stringent requirements on the characteristics of the states in terms of fidelity and generation rate, along with a desired compatibility with telecommunic...
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| creator | Martins, Laura dos Santos Laurent-Puig, Nicolas Lefebvre, Pascal Neves, Simon Diamanti, Eleni |
| description | Multipartite entangled states are an essential building block for advanced
quantum networking applications. Realizing such tasks in practice puts
stringent requirements on the characteristics of the states in terms of
fidelity and generation rate, along with a desired compatibility with
telecommunication network deployment. Here, we demonstrate a photonic platform
design capable of producing high-fidelity Greenberger-Horne-Zeilinger (GHZ)
states, at telecom wavelength and in a compact and scalable configuration. Our
source relies on spontaneous parametric down-conversion in a layered Sagnac
interferometer, which only requires a single nonlinear crystal. This enables
the generation of highly indistinguishable photon pairs, leading by
entanglement fusion to four-qubit polarization-entangled GHZ states with
fidelity up to $(94.73 \pm 0.21)\%$ with respect to the ideal state, at a rate
of 1.7Hz. We provide a complete characterization of our source and highlight
its suitability for practical quantum network applications. |
| doi_str_mv | 10.48550/arxiv.2407.00802 |
| format | Article |
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quantum networking applications. Realizing such tasks in practice puts
stringent requirements on the characteristics of the states in terms of
fidelity and generation rate, along with a desired compatibility with
telecommunication network deployment. Here, we demonstrate a photonic platform
design capable of producing high-fidelity Greenberger-Horne-Zeilinger (GHZ)
states, at telecom wavelength and in a compact and scalable configuration. Our
source relies on spontaneous parametric down-conversion in a layered Sagnac
interferometer, which only requires a single nonlinear crystal. This enables
the generation of highly indistinguishable photon pairs, leading by
entanglement fusion to four-qubit polarization-entangled GHZ states with
fidelity up to $(94.73 \pm 0.21)\%$ with respect to the ideal state, at a rate
of 1.7Hz. We provide a complete characterization of our source and highlight
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quantum networking applications. Realizing such tasks in practice puts
stringent requirements on the characteristics of the states in terms of
fidelity and generation rate, along with a desired compatibility with
telecommunication network deployment. Here, we demonstrate a photonic platform
design capable of producing high-fidelity Greenberger-Horne-Zeilinger (GHZ)
states, at telecom wavelength and in a compact and scalable configuration. Our
source relies on spontaneous parametric down-conversion in a layered Sagnac
interferometer, which only requires a single nonlinear crystal. This enables
the generation of highly indistinguishable photon pairs, leading by
entanglement fusion to four-qubit polarization-entangled GHZ states with
fidelity up to $(94.73 \pm 0.21)\%$ with respect to the ideal state, at a rate
of 1.7Hz. We provide a complete characterization of our source and highlight
its suitability for practical quantum network applications.</description><subject>Physics</subject><subject>Physics - Quantum Physics</subject><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><sourceid>GOX</sourceid><recordid>eNo9kM9rgzAYhnPZYXT7A3ZaroPqYuKPeCzSzoFlYxN2lE-TaCAasams--tn27HT-_Hy8PHyIPQQED_kUUSeYfrWs09DkviEcEJvUfUhwegfPbQYcGb7ERq3xrluO2-nhTTanda4lEY2tve-YF6uoXUd_rTHqZHYKrw_GqdHmJx2Em8HB0NrpMDvnXV2ONyhGwXmIO__coXK3bbMcq94e3nNNoUHEQ88RRld9gjFIOVBGjFJ0zpcNrO0lqymSpBYRbxhwBgILhKlGKUU6hhEGFPFVujp-rYDU42T7mE6VRZ0lW-K6tyRkBOWcDIHC_t4ZS82_umzlepihf0CATFcaw</recordid><startdate>20240630</startdate><enddate>20240630</enddate><creator>Martins, Laura dos Santos</creator><creator>Laurent-Puig, Nicolas</creator><creator>Lefebvre, Pascal</creator><creator>Neves, Simon</creator><creator>Diamanti, Eleni</creator><scope>GOX</scope><scope>1XC</scope><scope>VOOES</scope><orcidid>https://orcid.org/0000-0003-1795-5711</orcidid></search><sort><creationdate>20240630</creationdate><title>Realizing a Compact, High-Fidelity, Telecom-Wavelength Source of Multipartite Entangled Photons</title><author>Martins, Laura dos Santos ; Laurent-Puig, Nicolas ; Lefebvre, Pascal ; Neves, Simon ; Diamanti, Eleni</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a581-f232080df3a981953e29b448539be3b2fd06f58c3a33ad8d7ff3222ab6ad462f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2024</creationdate><topic>Physics</topic><topic>Physics - Quantum Physics</topic><toplevel>online_resources</toplevel><creatorcontrib>Martins, Laura dos Santos</creatorcontrib><creatorcontrib>Laurent-Puig, Nicolas</creatorcontrib><creatorcontrib>Lefebvre, Pascal</creatorcontrib><creatorcontrib>Neves, Simon</creatorcontrib><creatorcontrib>Diamanti, Eleni</creatorcontrib><collection>arXiv.org</collection><collection>Hyper Article en Ligne (HAL)</collection><collection>Hyper Article en Ligne (HAL) (Open Access)</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Martins, Laura dos Santos</au><au>Laurent-Puig, Nicolas</au><au>Lefebvre, Pascal</au><au>Neves, Simon</au><au>Diamanti, Eleni</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Realizing a Compact, High-Fidelity, Telecom-Wavelength Source of Multipartite Entangled Photons</atitle><date>2024-06-30</date><risdate>2024</risdate><abstract>Multipartite entangled states are an essential building block for advanced
quantum networking applications. Realizing such tasks in practice puts
stringent requirements on the characteristics of the states in terms of
fidelity and generation rate, along with a desired compatibility with
telecommunication network deployment. Here, we demonstrate a photonic platform
design capable of producing high-fidelity Greenberger-Horne-Zeilinger (GHZ)
states, at telecom wavelength and in a compact and scalable configuration. Our
source relies on spontaneous parametric down-conversion in a layered Sagnac
interferometer, which only requires a single nonlinear crystal. This enables
the generation of highly indistinguishable photon pairs, leading by
entanglement fusion to four-qubit polarization-entangled GHZ states with
fidelity up to $(94.73 \pm 0.21)\%$ with respect to the ideal state, at a rate
of 1.7Hz. We provide a complete characterization of our source and highlight
its suitability for practical quantum network applications.</abstract><doi>10.48550/arxiv.2407.00802</doi><orcidid>https://orcid.org/0000-0003-1795-5711</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | Physics Physics - Quantum Physics |
| title | Realizing a Compact, High-Fidelity, Telecom-Wavelength Source of Multipartite Entangled Photons |
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