{"paper":{"title":"Optimizing Quantum Entanglement Preservation in a Qubit Qubit System with Dzyaloshinskii Moriya Interaction under Noisy Magnetic Fields via Feedback Control","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"Feedback control of DM interaction doubles average negativity and improves sensing sensitivity by a factor of 2.4 under colored noise.","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Seyed Mohsen Moosavi Khansari","submitted_at":"2026-05-04T02:27:09Z","abstract_excerpt":"Quantum entanglement is a key resource for quantum information processing and sensing, but it is severely degraded by environmental noise. We extend the previous study by Moosavi Khansari and Kazemi Hasanvand [27] of entanglement dynamics in a qubit qubit system with Dzyaloshinskii Moriya (DM) interaction and static magnetic fields to the realistic case of time varying, stochastic magnetic fields. We derive a stochastic Lindblad master equation and simulate quantum trajectories to quantify the negativity under colored noise. We then design a proportional integral feedback protocol that dynamic"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"Our simulations show that feedback increases the time averaged negativity from 0.21 to 0.42 for α=1 at noise amplitude σ=0.5, leading to a factor 2.4 improvement in sensitivity over the classical shot noise limit.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"The model assumes real-time, noise-free adjustment of the DM interaction strength D_z(t) is possible and that the stochastic magnetic fields follow a specific colored-noise spectrum fully captured by the chosen Lindblad form.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Feedback control on DM interaction strength doubles time-averaged negativity under colored magnetic noise and yields 2.4 times better quantum Fisher information for static field estimation.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Feedback control of DM interaction doubles average negativity and improves sensing sensitivity by a factor of 2.4 under colored noise.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"57011054e7504b65e732bba251d17becd758ae9854d202395c5ff9dd5d81c21e"},"source":{"id":"2605.02151","kind":"arxiv","version":3},"verdict":{"id":"f5659efe-5778-4326-9672-b5dd8f264f83","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-12T04:34:40.291356Z","strongest_claim":"Our simulations show that feedback increases the time averaged negativity from 0.21 to 0.42 for α=1 at noise amplitude σ=0.5, leading to a factor 2.4 improvement in sensitivity over the classical shot noise limit.","one_line_summary":"Feedback control on DM interaction strength doubles time-averaged negativity under colored magnetic noise and yields 2.4 times better quantum Fisher information for static field estimation.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"The model assumes real-time, noise-free adjustment of the DM interaction strength D_z(t) is possible and that the stochastic magnetic fields follow a specific colored-noise spectrum fully captured by the chosen Lindblad form.","pith_extraction_headline":"Feedback control of DM interaction doubles average negativity and improves sensing sensitivity by a factor of 2.4 under colored noise."},"integrity":{"clean":false,"summary":{"advisory":0,"critical":1,"by_detector":{"doi_compliance":{"total":1,"advisory":0,"critical":1,"informational":0}},"informational":0},"endpoint":"/pith/2605.02151/integrity.json","findings":[{"note":"Identifier '10.1088/1751-8121/ab5d6d' is syntactically valid but the DOI registry (doi.org) returned 404, and Crossref / OpenAlex / internal corpus also have no record. The cited work could not be located through any authoritative source.","detector":"doi_compliance","severity":"critical","ref_index":18,"audited_at":"2026-05-19T16:38:20.205576Z","detected_doi":"10.1088/1751-8121/ab5d6d","finding_type":"unresolvable_identifier","verdict_class":"cross_source","detected_arxiv_id":null}],"available":true,"detectors_run":[{"name":"ai_meta_artifact","ran_at":"2026-05-20T16:37:15.253041Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_title_agreement","ran_at":"2026-05-20T04:01:22.465130Z","status":"completed","version":"1.0.0","findings_count":0},{"name":"doi_compliance","ran_at":"2026-05-19T16:38:20.205576Z","status":"completed","version":"1.0.0","findings_count":1}],"snapshot_sha256":"214698a31c346e3c42c047365f8b328f2f59e65fc6a695f12f54226ca148b97a"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":2,"snapshot_sha256":"c0b697d950193407aada8000675cbb3d0e4081f643f9f0503da3779a98a3a364"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}