{"id":630680,"date":"2026-05-08T09:46:17","date_gmt":"2026-05-08T09:46:17","guid":{"rendered":"https:\/\/www.newsbeep.com\/us\/630680\/"},"modified":"2026-05-08T09:46:17","modified_gmt":"2026-05-08T09:46:17","slug":"a-metropolitan-scale-multiplexed-quantum-repeater-with-bell-non-locality","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/us\/630680\/","title":{"rendered":"A metropolitan-scale multiplexed quantum repeater with Bell non-locality"},"content":{"rendered":"

Briegel, H. J., D\u00fcr, W., Cirac, J. I. & Zoller, P. Quantum repeaters: the role of imperfect local operations in quantum communication. Phy. Rev. Lett. 81, 5932\u20135935 (1998).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Kimble, H. J. The quantum internet. Nature 453, 1023\u20131030 (2008).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Sangouard, N., Simon, C., de Riedmatten, H. & Gisin, N. Quantum repeaters based on atomic ensembles and linear optics. Rev. Mod. Phys. 83, 33\u201380 (2011).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Wehner, S., Elkouss, D. & Hanson, R. Quantum internet: a vision for the road ahead. Science 362, eaam9288 (2018).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Chou, C.-W. et al. Functional quantum nodes for entanglement distribution over scalable quantum networks. Science 316, 1316\u20131320 (2007).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Yu, Y. et al. Entanglement of two quantum memories via fibres over dozens of kilometres. Nature 578, 240\u2013245 (2020).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Luo, X.-Y. et al. Entangling quantum memories over 420\u2009km in fiber. Preprint at https:\/\/arxiv.org\/abs\/2504.05660<\/a> (2025).<\/p>\n

Hofmann, J. et al. Heralded entanglement between widely separated atoms. Science 337, 72\u201375 (2012).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

van Leent, T. et al. Entangling single atoms over 33\u2009km telecom fibre. Nature 607, 69\u201373 (2022).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Zhang, W. et al. A device-independent quantum key distribution system for distant users. Nature 607, 687\u2013691 (2022).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Nadlinger, D. P. et al. Experimental quantum key distribution certified by Bell\u2019s theorem. Nature 607, 682\u2013686 (2022).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Krutyanskiy, V. et al. Entanglement of trapped-ion qubits separated by 230 meters. Phy. Rev. Lett. 130, 050803 (2023).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Hensen, B. et al. Loophole-free bell inequality violation using electron spins separated by 1.3 kilometres. Nature 526, 682\u2013686 (2015).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Delteil, A. et al. Generation of heralded entanglement between distant hole spins. Nat. Phys. 12, 218\u2013223 (2016).<\/p>\n

Article<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Stolk, A. J. et al. Metropolitan-scale heralded entanglement of solid-state qubits. Sci.e Adv. 10, eadp6442 (2024).<\/p>\n


\n Google Scholar<\/a>\u00a0\n <\/p>\n

Knaut, C. M. et al. Entanglement of nanophotonic quantum memory nodes in a telecom network. Nature 629, 573\u2013578 (2024).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Afzal, F. et al. Distributed quantum computing in silicon. Preprint at https:\/\/arxiv.org\/abs\/2406.01704<\/a> (2024).<\/p>\n

Riedinger, R. et al. Remote quantum entanglement between two micromechanical oscillators. Nature 556, 473\u2013477 (2018).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Liu, X. et al. Heralded entanglement distribution between two absorptive quantum memories. Nature 594, 41\u201345 (2021).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Lago-Rivera, D., Grandi, S., Rakonjac, J. V., Seri, A. & de Riedmatten, H. Telecom-heralded entanglement between multimode solid-state quantum memories. Nature 594, 37\u201340 (2021).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Ruskuc, A. et al. Multiplexed entanglement of multi-emitter quantum network nodes. Nature 639, 54\u201359 (2025).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Zhu, T.-X., Liu, X., Zhou, Z.-Q. & Li, C.-F. Remote quantum networks based on quantum memories. Nanophotonics 14, 1975\u20131992 (2025).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Liu, J.-L. et al. Creation of memory-memory entanglement in a metropolitan quantum network. Nature 629, 579\u2013585 (2024).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Ac\u00edn, A. et al. Device-independent security of quantum cryptography against collective attacks. Phy. Rev. Lett. 98, 230501 (2007).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Pironio, S. et al. Random numbers certified by Bell\u2019s theorem. Nature 464, 1021\u20131024 (2010).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Adamson, S. A. Parallel remote state preparation for fully device-independent verifiable blind quantum computation. Phys. Rev. Res. 7, 013069 (2025).<\/p>\n

Article<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

\u0160upi\u0107, I. & Bowles, J. Self-testing of quantum systems: a review. Quantum 4, 337 (2020).<\/p>\n

Article<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Sekatski, P., Bancal, J.-D., Ioannou, M., Afzelius, M. & Brunner, N. Toward the device-independent certification of a quantum memory. Phy. Rev. Lett. 131, 170802 (2023).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Barrett, S. D. & Kok, P. Efficient high-fidelity quantum computation using matter qubits and linear optics. Phys. Rev. A 71, 060310 (2005).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Halder, M. et al. Entangling independent photons by time measurement. Nat. Phys. 3, 692\u2013695 (2007).<\/p>\n

Article<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Clauser, J. F., Horne, M. A., Shimony, A. & Holt, R. A. Proposed experiment to test local hidden variable theories. Phys. Rev. Lett. 24, 549 (1970).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Ortu, A., Holz\u00e4pfel, A., Etesse, J. & Afzelius, M. Storage of photonic time-bin qubits for up to 20 ms in a rare-earth doped crystal. npj Quantum Inf. 8, 29 (2022).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Ma, Y.-Z. et al. Elimination of noise in optically rephased photon echoes. Nat. Commun. 12, 4378 (2021).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Liu, Y.-P. et al. A millisecond integrated quantum memory for photonic qubits. Sci. Adv. 11, eadu5264 (2025).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Simon, C. et al. Quantum repeaters with photon pair sources and multimode memories. Phy. Rev. Lett. 98, 190503 (2007).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Jiang, L., Taylor, J. M. & Lukin, M. D. Fast and robust approach to long-distance quantum communication with atomic ensembles. Phys. Rev. A 76, 012301 (2007).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Zhao, B., Chen, Z.-B., Chen, Y.-A., Schmiedmayer, J. & Pan, J.-W. Robust creation of entanglement between remote memory qubits. Phy. Rev. Lett. 98, 240502 (2007).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Simon, C. & Irvine, W. T. M. Robust long-distance entanglement and a loophole-free bell test with ions and photons. Phys. Rev. Lett. 91, 110405 (2003).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Li, C.-L., Yin, H.-L. & Chen, Z.-B. Asynchronous quantum repeater using multiple quantum memory. Rep. Progr. Phys. 87, 127901 (2024).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Fekete, J., Riel\u00e4nder, D., Cristiani, M. & de Riedmatten, H. Ultranarrow-band photon-pair source compatible with solid state quantum memories and telecommunication networks. Phy. Rev. Lett. 110, 220502 (2013).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

de Riedmatten, H., Afzelius, M., Staudt, M. U., Simon, C. & Gisin, N. A solid-state light-matter interface at the single-photon level. Nature 456, 773\u2013777 (2008).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Liu, X. et al. Nonlocal photonic quantum gates over 7.0\u2009km. Nat. Commun. 15, 8529 (2024).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

G\u00fchne, O. & T\u00f3th, G. Entanglement detection. Phys. Rep. 474, 1\u201375 (2009).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Ma, Y., Ma, Y.-Z., Zhou, Z.-Q., Li, C.-F. & Guo, G.-C. One-hour coherent optical storage in an atomic frequency comb memory. Nat. Commun. 12, 2381 (2021).<\/p>\n

Article<\/a>\u00a0
\n ADS<\/a>\u00a0
\n
\n Google Scholar<\/a>\u00a0\n <\/p>\n

Zhu, T.-X. et al. Data for \u2018a metropolitan-scale multiplexed quantum repeater with Bell nonlocality\u2019. figshare https:\/\/doi.org\/10.6084\/m9.figshare.31778782<\/a> (2026).<\/p>\n","protected":false},"excerpt":{"rendered":"Briegel, H. J., D\u00fcr, W., Cirac, J. I. & Zoller, P. Quantum repeaters: the role of imperfect local…\n","protected":false},"author":2,"featured_media":630681,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[49],"tags":[1357,257,199,12506,3474,1358,79],"class_list":["post-630680","post","type-post","status-publish","format-standard","has-post-thumbnail","category-physics","tag-applied-and-technical-physics","tag-general","tag-physics","tag-quantum-information","tag-quantum-optics","tag-quantum-physics","tag-science"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/posts\/630680","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/comments?post=630680"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/posts\/630680\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/media\/630681"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/media?parent=630680"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/categories?post=630680"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/us\/wp-json\/wp\/v2\/tags?post=630680"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}