{"paper":{"title":"Nonreciprocal magnon-magnon entanglement in a spinning cavity-magnon system","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"Spinning a cavity with two yttrium iron garnet spheres produces nonreciprocal magnon-magnon entanglement via Kerr nonlinearity and the Sagnac effect.","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Chunfang Sun, Gangcheng Wang, Mengxue Li, Zhisheng Xu","submitted_at":"2026-05-14T05:17:38Z","abstract_excerpt":"Cavity-magnon systems, combining magnons and photons, offer a versatile platform for studying quantum entanglement and advancing quantum information science. In this work, we propose a scheme for generating nonreciprocal magnon-magnon entanglement in a hybrid system consisting of two yttrium iron garnet spheres coupled to a spinning whispering-gallery-mode cavity. By leveraging the magnon Kerr nonlinearity and the Sagnac effect arising from the cavity rotation, we show that the entanglement can be substantially enhanced, and the resulting entanglement exhibits pronounced nonreciprocal characte"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"By leveraging the magnon Kerr nonlinearity and the Sagnac effect arising from the cavity rotation, we show that the entanglement can be substantially enhanced, and the resulting entanglement exhibits pronounced nonreciprocal characteristics. Furthermore, our scheme demonstrates that the entanglement remains robust against thermal noise and persists at bath temperatures up to 100 mK.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The proposal assumes that magnon Kerr nonlinearity and ideal cavity-magnon coupling can be maintained while the Sagnac effect from rotation produces the claimed nonreciprocity without significant additional losses or decoherence channels.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Spinning cavity-magnon system with Kerr nonlinearity generates enhanced nonreciprocal magnon-magnon entanglement robust against thermal noise up to 100 mK.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Spinning a cavity with two yttrium iron garnet spheres produces nonreciprocal magnon-magnon entanglement via Kerr nonlinearity and the Sagnac effect.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"930b2a1cbf8cd731979b7a91d0d0cb7f2eb1a8ec41437a6d2d21db030e07d1cc"},"source":{"id":"2605.14394","kind":"arxiv","version":1},"verdict":{"id":"71e9e9e2-2f47-4ea7-a510-d6908ecdd20f","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-15T02:14:54.811974Z","strongest_claim":"By leveraging the magnon Kerr nonlinearity and the Sagnac effect arising from the cavity rotation, we show that the entanglement can be substantially enhanced, and the resulting entanglement exhibits pronounced nonreciprocal characteristics. Furthermore, our scheme demonstrates that the entanglement remains robust against thermal noise and persists at bath temperatures up to 100 mK.","one_line_summary":"Spinning cavity-magnon system with Kerr nonlinearity generates enhanced nonreciprocal magnon-magnon entanglement robust against thermal noise up to 100 mK.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The proposal assumes that magnon Kerr nonlinearity and ideal cavity-magnon coupling can be maintained while the Sagnac effect from rotation produces the claimed nonreciprocity without significant additional losses or decoherence channels.","pith_extraction_headline":"Spinning a cavity with two yttrium iron garnet spheres produces nonreciprocal magnon-magnon entanglement via Kerr nonlinearity and the Sagnac effect."},"references":{"count":71,"sample":[{"doi":"","year":2009,"title":"R. Horodecki, P. Horodecki, M. Horodecki, and K. Horodecki, Quantum entanglement, Reviews of Modern Physics81, 865 (2009)","work_id":"adadf19d-3e85-42bd-b4e0-312158a2775f","ref_index":1,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2014,"title":"Vedral, Quantum entanglement, Nature Physics10, 256 (2014)","work_id":"381ff21f-f070-4881-95ab-3affe56c8ea5","ref_index":2,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":1998,"title":"Steane, Quantum computing, Reports on Progress in Physics 9 61, 117 (1998)","work_id":"83a488c6-3e2c-4cb4-8252-b428f9b71d0a","ref_index":3,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2022,"title":"R. Rietsche, C. Dremel, S. Bosch, L. Steinacker, M. Meckel, and J.-M. Leimeister, Quantum computing, Electronic Markets 32, 2525 (2022)","work_id":"b1213b12-bfe7-4704-91fa-f1e35bef2e91","ref_index":4,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2003,"title":"Brassard, Quantum communication complexity, Foundations of Physics33, 1593 (2003)","work_id":"0f6f2471-2a2e-42c2-95d7-349cb15823e1","ref_index":5,"cited_arxiv_id":"","is_internal_anchor":false}],"resolved_work":71,"snapshot_sha256":"48180a4e195857ef52e88972a9c0fedd795aba1ed4bda282b2eddddac3f21e35","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}