Entangling motional atoms and an optical loop at ambient condition
Abstract The observation of quantum entanglement in macroscopic matters has implications in the fundamental studies of quantum mechanics, as well as the implementations of quantum information technologies, such as quantum communication, enhanced sensing, and distributed quantum computing. Here, we r...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-06-01
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| Series: | npj Quantum Information |
| Online Access: | https://doi.org/10.1038/s41534-023-00715-7 |
| _version_ | 1797789622114189312 |
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| author | Xiao-Ling Pang Chao-Ni Zhang Jian-Peng Dou Hang Li Tian-Huai Yang Xian-Min Jin |
| author_facet | Xiao-Ling Pang Chao-Ni Zhang Jian-Peng Dou Hang Li Tian-Huai Yang Xian-Min Jin |
| author_sort | Xiao-Ling Pang |
| collection | DOAJ |
| description | Abstract The observation of quantum entanglement in macroscopic matters has implications in the fundamental studies of quantum mechanics, as well as the implementations of quantum information technologies, such as quantum communication, enhanced sensing, and distributed quantum computing. Here, we report the creation of the heralded entanglement between two different room-temperature quantum memories: a single-photon entangled state delocalized between motional atoms as a collective excitation and an all-optical loop as a flying qubit. The stored entangled state is subsequently retrieved and verified by measuring the nonclassical correlations, quantum interference, and concurrence of the mapped-out photons. Our results show that quantum entanglement can be sustained in macroscopic matters at ambient condition, which enriches the fundamental researches of the transition boundary between quantum and classical worlds. Also, it highlights the potential cooperation between atomic ensembles and all-optical loop as quantum nodes at ambient condition, bringing a significant step towards practical quantum networks. |
| first_indexed | 2024-03-13T01:53:17Z |
| format | Article |
| id | doaj.art-34d6c0fca43d497da531ad4eb3ddf3e8 |
| institution | Directory Open Access Journal |
| issn | 2056-6387 |
| language | English |
| last_indexed | 2024-03-13T01:53:17Z |
| publishDate | 2023-06-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Quantum Information |
| spelling | doaj.art-34d6c0fca43d497da531ad4eb3ddf3e82023-07-02T11:22:22ZengNature Portfolionpj Quantum Information2056-63872023-06-01911610.1038/s41534-023-00715-7Entangling motional atoms and an optical loop at ambient conditionXiao-Ling Pang0Chao-Ni Zhang1Jian-Peng Dou2Hang Li3Tian-Huai Yang4Xian-Min Jin5Center for Integrated Quantum Information Technologies (IQIT), School of Physics and Astronomy and State Key Laboratory of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong UniversityCenter for Integrated Quantum Information Technologies (IQIT), School of Physics and Astronomy and State Key Laboratory of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong UniversityCenter for Integrated Quantum Information Technologies (IQIT), School of Physics and Astronomy and State Key Laboratory of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong UniversityCenter for Integrated Quantum Information Technologies (IQIT), School of Physics and Astronomy and State Key Laboratory of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong UniversityCenter for Integrated Quantum Information Technologies (IQIT), School of Physics and Astronomy and State Key Laboratory of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong UniversityCenter for Integrated Quantum Information Technologies (IQIT), School of Physics and Astronomy and State Key Laboratory of Advanced Optical Communication Systems and Networks, Shanghai Jiao Tong UniversityAbstract The observation of quantum entanglement in macroscopic matters has implications in the fundamental studies of quantum mechanics, as well as the implementations of quantum information technologies, such as quantum communication, enhanced sensing, and distributed quantum computing. Here, we report the creation of the heralded entanglement between two different room-temperature quantum memories: a single-photon entangled state delocalized between motional atoms as a collective excitation and an all-optical loop as a flying qubit. The stored entangled state is subsequently retrieved and verified by measuring the nonclassical correlations, quantum interference, and concurrence of the mapped-out photons. Our results show that quantum entanglement can be sustained in macroscopic matters at ambient condition, which enriches the fundamental researches of the transition boundary between quantum and classical worlds. Also, it highlights the potential cooperation between atomic ensembles and all-optical loop as quantum nodes at ambient condition, bringing a significant step towards practical quantum networks.https://doi.org/10.1038/s41534-023-00715-7 |
| spellingShingle | Xiao-Ling Pang Chao-Ni Zhang Jian-Peng Dou Hang Li Tian-Huai Yang Xian-Min Jin Entangling motional atoms and an optical loop at ambient condition npj Quantum Information |
| title | Entangling motional atoms and an optical loop at ambient condition |
| title_full | Entangling motional atoms and an optical loop at ambient condition |
| title_fullStr | Entangling motional atoms and an optical loop at ambient condition |
| title_full_unstemmed | Entangling motional atoms and an optical loop at ambient condition |
| title_short | Entangling motional atoms and an optical loop at ambient condition |
| title_sort | entangling motional atoms and an optical loop at ambient condition |
| url | https://doi.org/10.1038/s41534-023-00715-7 |
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