{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:NVXWV6TW3CDSCIE3TKKDBBYFBJ","short_pith_number":"pith:NVXWV6TW","canonical_record":{"source":{"id":"2601.23043","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2026-01-30T14:51:10Z","cross_cats_sorted":[],"title_canon_sha256":"7f5dba3f2952f35b1a5443217b8c499b4404616ee13cb6c8660f307e5d8e3988","abstract_canon_sha256":"77cb62b2abdba09e47947cef98b07ef61e54df8cd7b3173982fac4f5e2d0ecae"},"schema_version":"1.0"},"canonical_sha256":"6d6f6afa76d88721209b9a943087050a7fe1e218dbb91489b7ea301828f95851","source":{"kind":"arxiv","id":"2601.23043","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2601.23043","created_at":"2026-06-30T02:17:14Z"},{"alias_kind":"arxiv_version","alias_value":"2601.23043v3","created_at":"2026-06-30T02:17:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2601.23043","created_at":"2026-06-30T02:17:14Z"},{"alias_kind":"pith_short_12","alias_value":"NVXWV6TW3CDS","created_at":"2026-06-30T02:17:14Z"},{"alias_kind":"pith_short_16","alias_value":"NVXWV6TW3CDSCIE3","created_at":"2026-06-30T02:17:14Z"},{"alias_kind":"pith_short_8","alias_value":"NVXWV6TW","created_at":"2026-06-30T02:17:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:NVXWV6TW3CDSCIE3TKKDBBYFBJ","target":"record","payload":{"canonical_record":{"source":{"id":"2601.23043","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2026-01-30T14:51:10Z","cross_cats_sorted":[],"title_canon_sha256":"7f5dba3f2952f35b1a5443217b8c499b4404616ee13cb6c8660f307e5d8e3988","abstract_canon_sha256":"77cb62b2abdba09e47947cef98b07ef61e54df8cd7b3173982fac4f5e2d0ecae"},"schema_version":"1.0"},"canonical_sha256":"6d6f6afa76d88721209b9a943087050a7fe1e218dbb91489b7ea301828f95851","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-30T02:17:14.968236Z","signature_b64":"3djI0n2k2C/Q/dsPAoq0AVXwd34E8uCODkuyx6d/4igSzXy1/f2AVRE/LX3hu497qKCbQGQxcZhqnHkq5lIWBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6d6f6afa76d88721209b9a943087050a7fe1e218dbb91489b7ea301828f95851","last_reissued_at":"2026-06-30T02:17:14.967679Z","signature_status":"signed_v1","first_computed_at":"2026-06-30T02:17:14.967679Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2601.23043","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-06-30T02:17:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IS2FIkhJH5zXAhzTcyvr55yfQEHsLLfAHzck3LKkYZUwEcvxEE1LeOXb5AsXOUWLs3NAe+4bJ0dbLjT3143VBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T14:06:45.868217Z"},"content_sha256":"bf6c85392b981a558bf4cb2614802879b461e151c574a8ec9eb893f12f5c9818","schema_version":"1.0","event_id":"sha256:bf6c85392b981a558bf4cb2614802879b461e151c574a8ec9eb893f12f5c9818"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:NVXWV6TW3CDSCIE3TKKDBBYFBJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Dicke superposition probes for noise-resilient Heisenberg and super-Heisenberg Metrology","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"A.R. Usha Devi, B.N.Karthik, K.S.Akhilesh, Sudha","submitted_at":"2026-01-30T14:51:10Z","abstract_excerpt":"Phase sensing with entangled multi-qubit states in the presence of noise is a central theme of modern quantum metrology. The present work investigates Dicke state superposition probes for quantum phase sensing under parameter encoding generated by one- and two-body interaction Hamiltonians. Under linear collective-spin encoding, near-optimal Dicke superposition states are shown to exhibit significantly enhanced robustness against phase damping noise compared with Greenberger--Horne--Zeilinger (GHZ), W-superposition, and balanced Dicke states, while maintaining favorable metrological performanc"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2601.23043","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2601.23043/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-06-30T02:17:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OqM2GlPGegS2ODA3kY2FpKkTs7hRSyNOMLtVAqn07RbKltQeUjU3pqydHYBnfrHNWPCt7AnYkN7LkskWhHMKCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T14:06:45.868701Z"},"content_sha256":"ecda8523c37f9dec7ff011c20a4ad66bca465b9b9d33008f623c97155d175cc7","schema_version":"1.0","event_id":"sha256:ecda8523c37f9dec7ff011c20a4ad66bca465b9b9d33008f623c97155d175cc7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NVXWV6TW3CDSCIE3TKKDBBYFBJ/bundle.json","state_url":"https://pith.science/pith/NVXWV6TW3CDSCIE3TKKDBBYFBJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NVXWV6TW3CDSCIE3TKKDBBYFBJ/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-04T14:06:45Z","links":{"resolver":"https://pith.science/pith/NVXWV6TW3CDSCIE3TKKDBBYFBJ","bundle":"https://pith.science/pith/NVXWV6TW3CDSCIE3TKKDBBYFBJ/bundle.json","state":"https://pith.science/pith/NVXWV6TW3CDSCIE3TKKDBBYFBJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NVXWV6TW3CDSCIE3TKKDBBYFBJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:NVXWV6TW3CDSCIE3TKKDBBYFBJ","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"77cb62b2abdba09e47947cef98b07ef61e54df8cd7b3173982fac4f5e2d0ecae","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2026-01-30T14:51:10Z","title_canon_sha256":"7f5dba3f2952f35b1a5443217b8c499b4404616ee13cb6c8660f307e5d8e3988"},"schema_version":"1.0","source":{"id":"2601.23043","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2601.23043","created_at":"2026-06-30T02:17:14Z"},{"alias_kind":"arxiv_version","alias_value":"2601.23043v3","created_at":"2026-06-30T02:17:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2601.23043","created_at":"2026-06-30T02:17:14Z"},{"alias_kind":"pith_short_12","alias_value":"NVXWV6TW3CDS","created_at":"2026-06-30T02:17:14Z"},{"alias_kind":"pith_short_16","alias_value":"NVXWV6TW3CDSCIE3","created_at":"2026-06-30T02:17:14Z"},{"alias_kind":"pith_short_8","alias_value":"NVXWV6TW","created_at":"2026-06-30T02:17:14Z"}],"graph_snapshots":[{"event_id":"sha256:ecda8523c37f9dec7ff011c20a4ad66bca465b9b9d33008f623c97155d175cc7","target":"graph","created_at":"2026-06-30T02:17:14Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2601.23043/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Phase sensing with entangled multi-qubit states in the presence of noise is a central theme of modern quantum metrology. The present work investigates Dicke state superposition probes for quantum phase sensing under parameter encoding generated by one- and two-body interaction Hamiltonians. Under linear collective-spin encoding, near-optimal Dicke superposition states are shown to exhibit significantly enhanced robustness against phase damping noise compared with Greenberger--Horne--Zeilinger (GHZ), W-superposition, and balanced Dicke states, while maintaining favorable metrological performanc","authors_text":"A.R. Usha Devi, B.N.Karthik, K.S.Akhilesh, Sudha","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2026-01-30T14:51:10Z","title":"Dicke superposition probes for noise-resilient Heisenberg and super-Heisenberg Metrology"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2601.23043","kind":"arxiv","version":3},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:bf6c85392b981a558bf4cb2614802879b461e151c574a8ec9eb893f12f5c9818","target":"record","created_at":"2026-06-30T02:17:14Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"77cb62b2abdba09e47947cef98b07ef61e54df8cd7b3173982fac4f5e2d0ecae","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2026-01-30T14:51:10Z","title_canon_sha256":"7f5dba3f2952f35b1a5443217b8c499b4404616ee13cb6c8660f307e5d8e3988"},"schema_version":"1.0","source":{"id":"2601.23043","kind":"arxiv","version":3}},"canonical_sha256":"6d6f6afa76d88721209b9a943087050a7fe1e218dbb91489b7ea301828f95851","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6d6f6afa76d88721209b9a943087050a7fe1e218dbb91489b7ea301828f95851","first_computed_at":"2026-06-30T02:17:14.967679Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-30T02:17:14.967679Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3djI0n2k2C/Q/dsPAoq0AVXwd34E8uCODkuyx6d/4igSzXy1/f2AVRE/LX3hu497qKCbQGQxcZhqnHkq5lIWBg==","signature_status":"signed_v1","signed_at":"2026-06-30T02:17:14.968236Z","signed_message":"canonical_sha256_bytes"},"source_id":"2601.23043","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bf6c85392b981a558bf4cb2614802879b461e151c574a8ec9eb893f12f5c9818","sha256:ecda8523c37f9dec7ff011c20a4ad66bca465b9b9d33008f623c97155d175cc7"],"state_sha256":"70bf455be21645b29b94fa909d167e285b054e1984e580bae7cbab9f8c1b60c3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"V25echBxkSpE1vWecqD+NTZ65nBeLhRL5N7FemOTvQkj1zqdWzudSzSlO7gZpFPOklOAOOTpIV2JarnSZ9L5Cg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T14:06:45.872121Z","bundle_sha256":"646952f24289a7a7c281d4e86e6a7f2b7f9706d0b2f2b065c9b6ef797b905c95"}}