{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:HUDYSVVRTYDTGCPOJYZUMEJENW","short_pith_number":"pith:HUDYSVVR","canonical_record":{"source":{"id":"1410.6565","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-10-24T04:04:44Z","cross_cats_sorted":["cond-mat.other","physics.optics"],"title_canon_sha256":"5cdf29cc83fb9c14d5fa08f6d6ea4458d5a49c93a5331975faa0d564deec4df9","abstract_canon_sha256":"0b9fc0f45361cc1f5a38042e1bc0a226eafd3d31015ddb8618ba7eec812954a7"},"schema_version":"1.0"},"canonical_sha256":"3d078956b19e073309ee4e334611246d9b72d06ce65ac6548041904d020e5f8f","source":{"kind":"arxiv","id":"1410.6565","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1410.6565","created_at":"2026-05-18T02:39:24Z"},{"alias_kind":"arxiv_version","alias_value":"1410.6565v1","created_at":"2026-05-18T02:39:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1410.6565","created_at":"2026-05-18T02:39:24Z"},{"alias_kind":"pith_short_12","alias_value":"HUDYSVVRTYDT","created_at":"2026-05-18T12:28:30Z"},{"alias_kind":"pith_short_16","alias_value":"HUDYSVVRTYDTGCPO","created_at":"2026-05-18T12:28:30Z"},{"alias_kind":"pith_short_8","alias_value":"HUDYSVVR","created_at":"2026-05-18T12:28:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:HUDYSVVRTYDTGCPOJYZUMEJENW","target":"record","payload":{"canonical_record":{"source":{"id":"1410.6565","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-10-24T04:04:44Z","cross_cats_sorted":["cond-mat.other","physics.optics"],"title_canon_sha256":"5cdf29cc83fb9c14d5fa08f6d6ea4458d5a49c93a5331975faa0d564deec4df9","abstract_canon_sha256":"0b9fc0f45361cc1f5a38042e1bc0a226eafd3d31015ddb8618ba7eec812954a7"},"schema_version":"1.0"},"canonical_sha256":"3d078956b19e073309ee4e334611246d9b72d06ce65ac6548041904d020e5f8f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:39:24.996429Z","signature_b64":"JQA+A2Ccg7As7KXYe+l57G//kZTSYRsC5twJHkCS9dxFJLEwRl9iOcDMjsLsUqb32orx4KHKKQy2UVflhn+gCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3d078956b19e073309ee4e334611246d9b72d06ce65ac6548041904d020e5f8f","last_reissued_at":"2026-05-18T02:39:24.995937Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:39:24.995937Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1410.6565","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":"2026-05-18T02:39:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Uzf4QDuLiV89af0IGS+1HjI9ufQ8Oq4m31Fnk9uTEVAukGhXJGjItyXKYyJtXewlQGhqNOgne+u7zuY5vKpaDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T21:38:49.682148Z"},"content_sha256":"4895b7ed84defe2f2ef39155d1d783dd02ae595d73098bb0823364c5ea0ee34d","schema_version":"1.0","event_id":"sha256:4895b7ed84defe2f2ef39155d1d783dd02ae595d73098bb0823364c5ea0ee34d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:HUDYSVVRTYDTGCPOJYZUMEJENW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Macroscopic quantum superposition of spin ensembles with ultra-long coherence times via superradiant masing","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.other","physics.optics"],"primary_cat":"quant-ph","authors_text":"J\\\"org Wrachtrup, Liang Jin, Ren-Bao Liu, Sen Yang","submitted_at":"2014-10-24T04:04:44Z","abstract_excerpt":"Macroscopic quantum phenomena such as lasers, Bose-Einstein condensates, superfluids, and superconductors are of great importance in foundations and applications of quantum mechanics. In particular, quantum superposition of a large number of spins in solids is highly desirable for both quantum information processing and ultrasensitive magnetometry. Spin ensembles in solids, however, have rather short collective coherence time (typically less than microseconds). Here we demonstrate that under realistic conditions it is possible to maintain macroscopic quantum superposition of a large spin ensem"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1410.6565","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":""},"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":"2026-05-18T02:39:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tPMbCeFk+/dkT21Mj1wmvduBER6w66O22Juqd18AbHEgUSmmNM6UtXsUB/ldgNoksjpcrUc91LD7611fEPe0Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T21:38:49.682514Z"},"content_sha256":"a268935d229e04ebc4686b0b251f28923210ce2916da32335b7f9eaf93dc915c","schema_version":"1.0","event_id":"sha256:a268935d229e04ebc4686b0b251f28923210ce2916da32335b7f9eaf93dc915c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HUDYSVVRTYDTGCPOJYZUMEJENW/bundle.json","state_url":"https://pith.science/pith/HUDYSVVRTYDTGCPOJYZUMEJENW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HUDYSVVRTYDTGCPOJYZUMEJENW/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":"2026-06-04T21:38:49Z","links":{"resolver":"https://pith.science/pith/HUDYSVVRTYDTGCPOJYZUMEJENW","bundle":"https://pith.science/pith/HUDYSVVRTYDTGCPOJYZUMEJENW/bundle.json","state":"https://pith.science/pith/HUDYSVVRTYDTGCPOJYZUMEJENW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HUDYSVVRTYDTGCPOJYZUMEJENW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:HUDYSVVRTYDTGCPOJYZUMEJENW","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":"0b9fc0f45361cc1f5a38042e1bc0a226eafd3d31015ddb8618ba7eec812954a7","cross_cats_sorted":["cond-mat.other","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-10-24T04:04:44Z","title_canon_sha256":"5cdf29cc83fb9c14d5fa08f6d6ea4458d5a49c93a5331975faa0d564deec4df9"},"schema_version":"1.0","source":{"id":"1410.6565","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1410.6565","created_at":"2026-05-18T02:39:24Z"},{"alias_kind":"arxiv_version","alias_value":"1410.6565v1","created_at":"2026-05-18T02:39:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1410.6565","created_at":"2026-05-18T02:39:24Z"},{"alias_kind":"pith_short_12","alias_value":"HUDYSVVRTYDT","created_at":"2026-05-18T12:28:30Z"},{"alias_kind":"pith_short_16","alias_value":"HUDYSVVRTYDTGCPO","created_at":"2026-05-18T12:28:30Z"},{"alias_kind":"pith_short_8","alias_value":"HUDYSVVR","created_at":"2026-05-18T12:28:30Z"}],"graph_snapshots":[{"event_id":"sha256:a268935d229e04ebc4686b0b251f28923210ce2916da32335b7f9eaf93dc915c","target":"graph","created_at":"2026-05-18T02:39:24Z","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"},"paper":{"abstract_excerpt":"Macroscopic quantum phenomena such as lasers, Bose-Einstein condensates, superfluids, and superconductors are of great importance in foundations and applications of quantum mechanics. In particular, quantum superposition of a large number of spins in solids is highly desirable for both quantum information processing and ultrasensitive magnetometry. Spin ensembles in solids, however, have rather short collective coherence time (typically less than microseconds). Here we demonstrate that under realistic conditions it is possible to maintain macroscopic quantum superposition of a large spin ensem","authors_text":"J\\\"org Wrachtrup, Liang Jin, Ren-Bao Liu, Sen Yang","cross_cats":["cond-mat.other","physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-10-24T04:04:44Z","title":"Macroscopic quantum superposition of spin ensembles with ultra-long coherence times via superradiant masing"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1410.6565","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":"sha256:4895b7ed84defe2f2ef39155d1d783dd02ae595d73098bb0823364c5ea0ee34d","target":"record","created_at":"2026-05-18T02:39:24Z","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":"0b9fc0f45361cc1f5a38042e1bc0a226eafd3d31015ddb8618ba7eec812954a7","cross_cats_sorted":["cond-mat.other","physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-10-24T04:04:44Z","title_canon_sha256":"5cdf29cc83fb9c14d5fa08f6d6ea4458d5a49c93a5331975faa0d564deec4df9"},"schema_version":"1.0","source":{"id":"1410.6565","kind":"arxiv","version":1}},"canonical_sha256":"3d078956b19e073309ee4e334611246d9b72d06ce65ac6548041904d020e5f8f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3d078956b19e073309ee4e334611246d9b72d06ce65ac6548041904d020e5f8f","first_computed_at":"2026-05-18T02:39:24.995937Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:39:24.995937Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JQA+A2Ccg7As7KXYe+l57G//kZTSYRsC5twJHkCS9dxFJLEwRl9iOcDMjsLsUqb32orx4KHKKQy2UVflhn+gCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:39:24.996429Z","signed_message":"canonical_sha256_bytes"},"source_id":"1410.6565","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4895b7ed84defe2f2ef39155d1d783dd02ae595d73098bb0823364c5ea0ee34d","sha256:a268935d229e04ebc4686b0b251f28923210ce2916da32335b7f9eaf93dc915c"],"state_sha256":"069dc90c85c3480619f8b2374115474cbaf06b301133537368c722bdf3b08edf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iPbqDP80gTgj7ww3okLrQoR3SUT8osBwplpGezYrVC/PapY4DgOF99587WBhqpaWuEEOKrGSGJR1Tr1X1f74Dg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T21:38:49.684686Z","bundle_sha256":"25d369a338a3f7035ce053b8e341bd87ba549aa9eeff2465a5a99688bf45f365"}}