{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:6RPNTGCHZXL5Y6INU2WZNJU3UG","short_pith_number":"pith:6RPNTGCH","canonical_record":{"source":{"id":"1601.03441","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-01-13T23:06:20Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"fc51c0e347fbf717a0fdaeb7eec448a7ef3ac4e105c55bdf91c267e8909e04f2","abstract_canon_sha256":"3c745e7a9e39c9d7f797c5bc20b45fc9662de6d9f22982e6612eda9bd6d744cb"},"schema_version":"1.0"},"canonical_sha256":"f45ed99847cdd7dc790da6ad96a69ba1874409db152bae3cf1ebcc94a64b12a9","source":{"kind":"arxiv","id":"1601.03441","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.03441","created_at":"2026-05-18T01:15:14Z"},{"alias_kind":"arxiv_version","alias_value":"1601.03441v4","created_at":"2026-05-18T01:15:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.03441","created_at":"2026-05-18T01:15:14Z"},{"alias_kind":"pith_short_12","alias_value":"6RPNTGCHZXL5","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_16","alias_value":"6RPNTGCHZXL5Y6IN","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_8","alias_value":"6RPNTGCH","created_at":"2026-05-18T12:30:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:6RPNTGCHZXL5Y6INU2WZNJU3UG","target":"record","payload":{"canonical_record":{"source":{"id":"1601.03441","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-01-13T23:06:20Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"fc51c0e347fbf717a0fdaeb7eec448a7ef3ac4e105c55bdf91c267e8909e04f2","abstract_canon_sha256":"3c745e7a9e39c9d7f797c5bc20b45fc9662de6d9f22982e6612eda9bd6d744cb"},"schema_version":"1.0"},"canonical_sha256":"f45ed99847cdd7dc790da6ad96a69ba1874409db152bae3cf1ebcc94a64b12a9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:15:14.282770Z","signature_b64":"3FKv1gvb0xLKsBIOCPOv4CWMtH0D6PBj13bS77O+obSgOW7iKEO10zVYbZv54K04Hal7maHl7kA6btkV3yb+Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f45ed99847cdd7dc790da6ad96a69ba1874409db152bae3cf1ebcc94a64b12a9","last_reissued_at":"2026-05-18T01:15:14.282248Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:15:14.282248Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1601.03441","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:15:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ynM5XKdOzij0XeKGYrEZ/GctH4PGl00P8xZIh5eH1QaENanh6n3AYoFR41fXuAYGCJ+BT9liopgSV4ructD+Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T21:34:40.920881Z"},"content_sha256":"4714ed3a0741da01e30351f740167dbae0c4ca5a45d1005c8a930fecdc3c13f7","schema_version":"1.0","event_id":"sha256:4714ed3a0741da01e30351f740167dbae0c4ca5a45d1005c8a930fecdc3c13f7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:6RPNTGCHZXL5Y6INU2WZNJU3UG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Symmetry protected single photon subradiance","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"physics.optics","authors_text":"Anatoly A. Svidzinsky, Da-Wei Wang, Han Cai, Marlan O. Scully, Shi-Yao Zhu","submitted_at":"2016-01-13T23:06:20Z","abstract_excerpt":"We study the protection of subradiant states by the symmetry of the atomic distributions in the Dicke limit, in which collective Lamb shifts cannot be neglected. We find that anti-symmetric states are subradiant states for distributions with reflection symmetry. Continuous symmetry can also be used to achieve subradiance. This study is relevant to the problem of robust quantum memory with long storage time and fast readout."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.03441","kind":"arxiv","version":4},"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":"2026-05-18T01:15:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Wv+u2rm4e6UP79/Af9HjYZjB5yUKu1j5WAyM0wTzIWfTd26VyVzxEbt3biuQtDVDXPiIk4lP7YqWJdK9HX4yDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T21:34:40.921564Z"},"content_sha256":"a9ecab97e9374797a1af7535a04f065aedebdf4050ba202429807d6555225d65","schema_version":"1.0","event_id":"sha256:a9ecab97e9374797a1af7535a04f065aedebdf4050ba202429807d6555225d65"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6RPNTGCHZXL5Y6INU2WZNJU3UG/bundle.json","state_url":"https://pith.science/pith/6RPNTGCHZXL5Y6INU2WZNJU3UG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6RPNTGCHZXL5Y6INU2WZNJU3UG/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":"2026-05-29T21:34:40Z","links":{"resolver":"https://pith.science/pith/6RPNTGCHZXL5Y6INU2WZNJU3UG","bundle":"https://pith.science/pith/6RPNTGCHZXL5Y6INU2WZNJU3UG/bundle.json","state":"https://pith.science/pith/6RPNTGCHZXL5Y6INU2WZNJU3UG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6RPNTGCHZXL5Y6INU2WZNJU3UG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:6RPNTGCHZXL5Y6INU2WZNJU3UG","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":"3c745e7a9e39c9d7f797c5bc20b45fc9662de6d9f22982e6612eda9bd6d744cb","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-01-13T23:06:20Z","title_canon_sha256":"fc51c0e347fbf717a0fdaeb7eec448a7ef3ac4e105c55bdf91c267e8909e04f2"},"schema_version":"1.0","source":{"id":"1601.03441","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.03441","created_at":"2026-05-18T01:15:14Z"},{"alias_kind":"arxiv_version","alias_value":"1601.03441v4","created_at":"2026-05-18T01:15:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.03441","created_at":"2026-05-18T01:15:14Z"},{"alias_kind":"pith_short_12","alias_value":"6RPNTGCHZXL5","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_16","alias_value":"6RPNTGCHZXL5Y6IN","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_8","alias_value":"6RPNTGCH","created_at":"2026-05-18T12:30:01Z"}],"graph_snapshots":[{"event_id":"sha256:a9ecab97e9374797a1af7535a04f065aedebdf4050ba202429807d6555225d65","target":"graph","created_at":"2026-05-18T01:15:14Z","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"},"paper":{"abstract_excerpt":"We study the protection of subradiant states by the symmetry of the atomic distributions in the Dicke limit, in which collective Lamb shifts cannot be neglected. We find that anti-symmetric states are subradiant states for distributions with reflection symmetry. Continuous symmetry can also be used to achieve subradiance. This study is relevant to the problem of robust quantum memory with long storage time and fast readout.","authors_text":"Anatoly A. Svidzinsky, Da-Wei Wang, Han Cai, Marlan O. Scully, Shi-Yao Zhu","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-01-13T23:06:20Z","title":"Symmetry protected single photon subradiance"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.03441","kind":"arxiv","version":4},"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":"sha256:4714ed3a0741da01e30351f740167dbae0c4ca5a45d1005c8a930fecdc3c13f7","target":"record","created_at":"2026-05-18T01:15:14Z","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":"3c745e7a9e39c9d7f797c5bc20b45fc9662de6d9f22982e6612eda9bd6d744cb","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-01-13T23:06:20Z","title_canon_sha256":"fc51c0e347fbf717a0fdaeb7eec448a7ef3ac4e105c55bdf91c267e8909e04f2"},"schema_version":"1.0","source":{"id":"1601.03441","kind":"arxiv","version":4}},"canonical_sha256":"f45ed99847cdd7dc790da6ad96a69ba1874409db152bae3cf1ebcc94a64b12a9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f45ed99847cdd7dc790da6ad96a69ba1874409db152bae3cf1ebcc94a64b12a9","first_computed_at":"2026-05-18T01:15:14.282248Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:15:14.282248Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3FKv1gvb0xLKsBIOCPOv4CWMtH0D6PBj13bS77O+obSgOW7iKEO10zVYbZv54K04Hal7maHl7kA6btkV3yb+Bg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:15:14.282770Z","signed_message":"canonical_sha256_bytes"},"source_id":"1601.03441","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4714ed3a0741da01e30351f740167dbae0c4ca5a45d1005c8a930fecdc3c13f7","sha256:a9ecab97e9374797a1af7535a04f065aedebdf4050ba202429807d6555225d65"],"state_sha256":"24bce972082fa94ed837c2135a196241994caa36cbad2a37a34185cbb96e0f72"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"V09mZlDfrRKxq5gJfyC6cwwVawQVdjU4cEeSC5kcSNQlIUrR++bL9LbHekGDrsESCzLjZdDSNxAObBiEG+QrDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T21:34:40.924851Z","bundle_sha256":"4021554568ef10aeb7238f7f52ad857510bf12c3dd64cbc3a416f1ad669bc495"}}