{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:P6C4YPTRPTZQTXKMXEHPUNDDDB","short_pith_number":"pith:P6C4YPTR","canonical_record":{"source":{"id":"2001.04047","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-01-13T03:24:25Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"9872fe7d3db4a8eb6d1bdf843b729d2402ffdef5cc9448d14ec50f78d0e13b6a","abstract_canon_sha256":"4634412d871d016e1bcc6da1662bc335eaa2ab1e8ff9f944ad7728ba5597d9ed"},"schema_version":"1.0"},"canonical_sha256":"7f85cc3e717cf309dd4cb90efa3463187cb6600da67e32a5c7f6be44488bc354","source":{"kind":"arxiv","id":"2001.04047","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2001.04047","created_at":"2026-07-05T00:32:58Z"},{"alias_kind":"arxiv_version","alias_value":"2001.04047v1","created_at":"2026-07-05T00:32:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2001.04047","created_at":"2026-07-05T00:32:58Z"},{"alias_kind":"pith_short_12","alias_value":"P6C4YPTRPTZQ","created_at":"2026-07-05T00:32:58Z"},{"alias_kind":"pith_short_16","alias_value":"P6C4YPTRPTZQTXKM","created_at":"2026-07-05T00:32:58Z"},{"alias_kind":"pith_short_8","alias_value":"P6C4YPTR","created_at":"2026-07-05T00:32:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:P6C4YPTRPTZQTXKMXEHPUNDDDB","target":"record","payload":{"canonical_record":{"source":{"id":"2001.04047","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-01-13T03:24:25Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"9872fe7d3db4a8eb6d1bdf843b729d2402ffdef5cc9448d14ec50f78d0e13b6a","abstract_canon_sha256":"4634412d871d016e1bcc6da1662bc335eaa2ab1e8ff9f944ad7728ba5597d9ed"},"schema_version":"1.0"},"canonical_sha256":"7f85cc3e717cf309dd4cb90efa3463187cb6600da67e32a5c7f6be44488bc354","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:32:58.399178Z","signature_b64":"hTia5tkNw0VfFxiw1YQV3SQc9OZEQ7iTJh/EzTLnN9cgeUc/nbX33GMqF5bumxJ1EiAO0Zf4p9Gf38kbVMXRBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7f85cc3e717cf309dd4cb90efa3463187cb6600da67e32a5c7f6be44488bc354","last_reissued_at":"2026-07-05T00:32:58.398627Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:32:58.398627Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2001.04047","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T00:32:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KopG15BqJBwxypd1N18jeehydJJAu4eejzSVLgASuBV79fhyJGLY7bZ86QOBU1/87m4ozYoHD0H1HDSGRAW5Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T07:13:57.684858Z"},"content_sha256":"9d3355a86ad4241f24708fc7417c4fb24dedc80ad695e1f9ff5d2f8b0bab4bd2","schema_version":"1.0","event_id":"sha256:9d3355a86ad4241f24708fc7417c4fb24dedc80ad695e1f9ff5d2f8b0bab4bd2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:P6C4YPTRPTZQTXKMXEHPUNDDDB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Experimental sensing quantum atmosphere of a single spin","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"quant-ph","authors_text":"Chang-Kui Duan, Fazhan Shi, Jiangfeng Du, Kehang Zhu, Qing-Dong Jiang, Xing Rong, Ya Wang, Zhijie Li, Zhiping Yang, Zhiyuan Zhao, Zihua Chai","submitted_at":"2020-01-13T03:24:25Z","abstract_excerpt":"Understanding symmetry-breaking states of materials is a major challenge in the modern physical sciences. Quantum atmosphere proposed recently sheds light on the hidden world of these symmetry broken patterns. But the requirements for exquisite sensitivity to the small shift and tremendous spatial resolution to local information pose huge obstacles to its experimental manifestation. In our experiment, we prepare time-reversal-symmetry conserved and broken quantum atmosphere of a single nuclear spin and successfully observe their symmetry properties. Our work proves in principle that finding sy"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2001.04047","kind":"arxiv","version":1},"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/2001.04047/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":"2026-07-05T00:32:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Dq+HU+IvEqeTT0lEGariNs1TrdelmaU6qAbi2QZNpJwh3AEvyfqM1JtBjSiRklcRtvfqxNXHm3Ctk5ReDf2IDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T07:13:57.685767Z"},"content_sha256":"236e4a548f3f39bf6bd175fcba9b1e81e0385d1bbe2a9698d825f9172823b7ea","schema_version":"1.0","event_id":"sha256:236e4a548f3f39bf6bd175fcba9b1e81e0385d1bbe2a9698d825f9172823b7ea"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/P6C4YPTRPTZQTXKMXEHPUNDDDB/bundle.json","state_url":"https://pith.science/pith/P6C4YPTRPTZQTXKMXEHPUNDDDB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/P6C4YPTRPTZQTXKMXEHPUNDDDB/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":"2026-08-05T07:13:57Z","links":{"resolver":"https://pith.science/pith/P6C4YPTRPTZQTXKMXEHPUNDDDB","bundle":"https://pith.science/pith/P6C4YPTRPTZQTXKMXEHPUNDDDB/bundle.json","state":"https://pith.science/pith/P6C4YPTRPTZQTXKMXEHPUNDDDB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/P6C4YPTRPTZQTXKMXEHPUNDDDB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:P6C4YPTRPTZQTXKMXEHPUNDDDB","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":"4634412d871d016e1bcc6da1662bc335eaa2ab1e8ff9f944ad7728ba5597d9ed","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-01-13T03:24:25Z","title_canon_sha256":"9872fe7d3db4a8eb6d1bdf843b729d2402ffdef5cc9448d14ec50f78d0e13b6a"},"schema_version":"1.0","source":{"id":"2001.04047","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2001.04047","created_at":"2026-07-05T00:32:58Z"},{"alias_kind":"arxiv_version","alias_value":"2001.04047v1","created_at":"2026-07-05T00:32:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2001.04047","created_at":"2026-07-05T00:32:58Z"},{"alias_kind":"pith_short_12","alias_value":"P6C4YPTRPTZQ","created_at":"2026-07-05T00:32:58Z"},{"alias_kind":"pith_short_16","alias_value":"P6C4YPTRPTZQTXKM","created_at":"2026-07-05T00:32:58Z"},{"alias_kind":"pith_short_8","alias_value":"P6C4YPTR","created_at":"2026-07-05T00:32:58Z"}],"graph_snapshots":[{"event_id":"sha256:236e4a548f3f39bf6bd175fcba9b1e81e0385d1bbe2a9698d825f9172823b7ea","target":"graph","created_at":"2026-07-05T00:32:58Z","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/2001.04047/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Understanding symmetry-breaking states of materials is a major challenge in the modern physical sciences. Quantum atmosphere proposed recently sheds light on the hidden world of these symmetry broken patterns. But the requirements for exquisite sensitivity to the small shift and tremendous spatial resolution to local information pose huge obstacles to its experimental manifestation. In our experiment, we prepare time-reversal-symmetry conserved and broken quantum atmosphere of a single nuclear spin and successfully observe their symmetry properties. Our work proves in principle that finding sy","authors_text":"Chang-Kui Duan, Fazhan Shi, Jiangfeng Du, Kehang Zhu, Qing-Dong Jiang, Xing Rong, Ya Wang, Zhijie Li, Zhiping Yang, Zhiyuan Zhao, Zihua Chai","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-01-13T03:24:25Z","title":"Experimental sensing quantum atmosphere of a single spin"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2001.04047","kind":"arxiv","version":1},"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":"sha256:9d3355a86ad4241f24708fc7417c4fb24dedc80ad695e1f9ff5d2f8b0bab4bd2","target":"record","created_at":"2026-07-05T00:32:58Z","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":"4634412d871d016e1bcc6da1662bc335eaa2ab1e8ff9f944ad7728ba5597d9ed","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-01-13T03:24:25Z","title_canon_sha256":"9872fe7d3db4a8eb6d1bdf843b729d2402ffdef5cc9448d14ec50f78d0e13b6a"},"schema_version":"1.0","source":{"id":"2001.04047","kind":"arxiv","version":1}},"canonical_sha256":"7f85cc3e717cf309dd4cb90efa3463187cb6600da67e32a5c7f6be44488bc354","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7f85cc3e717cf309dd4cb90efa3463187cb6600da67e32a5c7f6be44488bc354","first_computed_at":"2026-07-05T00:32:58.398627Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:32:58.398627Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hTia5tkNw0VfFxiw1YQV3SQc9OZEQ7iTJh/EzTLnN9cgeUc/nbX33GMqF5bumxJ1EiAO0Zf4p9Gf38kbVMXRBw==","signature_status":"signed_v1","signed_at":"2026-07-05T00:32:58.399178Z","signed_message":"canonical_sha256_bytes"},"source_id":"2001.04047","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9d3355a86ad4241f24708fc7417c4fb24dedc80ad695e1f9ff5d2f8b0bab4bd2","sha256:236e4a548f3f39bf6bd175fcba9b1e81e0385d1bbe2a9698d825f9172823b7ea"],"state_sha256":"3526b2dcfc7bf0bbf282347bfd5a228eef96a19fb5a5134057ccc14cdc18af03"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OHjcMx6EPcNlyzCIhvAbB5zehf/yYg4QytOXNcdvtnOiZlrhV4XjTuBChJnILvQcMHUG2UQ694D1C3RCsR4DDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T07:13:57.692079Z","bundle_sha256":"d2ee2e045d36c687b275effaa59e5374300d0cf22926814e2678431da4d6a759"}}