{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:O4SOO7FOOLNWIWG42R7O66DFID","short_pith_number":"pith:O4SOO7FO","canonical_record":{"source":{"id":"1712.04312","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-12-12T14:35:12Z","cross_cats_sorted":[],"title_canon_sha256":"4c25a786e598676a9d175689c01fd852eeb8a33c2de90db373e01e69f8570c32","abstract_canon_sha256":"2e40f5a2875720c3de0fff75fe407f92beb48a9f5ac28c7e65f818ae9f6dd545"},"schema_version":"1.0"},"canonical_sha256":"7724e77cae72db6458dcd47eef786540ddcf28990f60e2358ce25c1dc5f07b1e","source":{"kind":"arxiv","id":"1712.04312","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1712.04312","created_at":"2026-05-18T00:20:44Z"},{"alias_kind":"arxiv_version","alias_value":"1712.04312v1","created_at":"2026-05-18T00:20:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.04312","created_at":"2026-05-18T00:20:44Z"},{"alias_kind":"pith_short_12","alias_value":"O4SOO7FOOLNW","created_at":"2026-05-18T12:31:34Z"},{"alias_kind":"pith_short_16","alias_value":"O4SOO7FOOLNWIWG4","created_at":"2026-05-18T12:31:34Z"},{"alias_kind":"pith_short_8","alias_value":"O4SOO7FO","created_at":"2026-05-18T12:31:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:O4SOO7FOOLNWIWG42R7O66DFID","target":"record","payload":{"canonical_record":{"source":{"id":"1712.04312","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-12-12T14:35:12Z","cross_cats_sorted":[],"title_canon_sha256":"4c25a786e598676a9d175689c01fd852eeb8a33c2de90db373e01e69f8570c32","abstract_canon_sha256":"2e40f5a2875720c3de0fff75fe407f92beb48a9f5ac28c7e65f818ae9f6dd545"},"schema_version":"1.0"},"canonical_sha256":"7724e77cae72db6458dcd47eef786540ddcf28990f60e2358ce25c1dc5f07b1e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:20:44.212181Z","signature_b64":"Skp8Cd1HkjrLDMF9KKp4DtbVHXM8BbvOA9IoFrO3t4o8h+dtoggt8g7FSD+G0qOxuFGgKjNv3myH45WkxyRUDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7724e77cae72db6458dcd47eef786540ddcf28990f60e2358ce25c1dc5f07b1e","last_reissued_at":"2026-05-18T00:20:44.211473Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:20:44.211473Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1712.04312","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":"2026-05-18T00:20:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8pD4vL0d8pYCqP7efxKc+0AGmwOBph4hXgVkXOWFIial4PdV7NKSJZOcW8ydTJ8+UtCUV12ZgRQhZz4SKIBUBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T09:21:41.026934Z"},"content_sha256":"81f9e40e85eece4b12d524993ea7f525467088b27eb99e5b76f184ce6815ed94","schema_version":"1.0","event_id":"sha256:81f9e40e85eece4b12d524993ea7f525467088b27eb99e5b76f184ce6815ed94"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:O4SOO7FOOLNWIWG42R7O66DFID","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Directional Dicke Subradiance with Nonclassical and Classical Light Sources","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Daniel Bhatti, Joachim von Zanthier, Raimund Schneider, Steffen Oppel","submitted_at":"2017-12-12T14:35:12Z","abstract_excerpt":"We investigate Dicke subradiance of distant quantum sources in free space, i.e., the spatial emission pattern of spontaneously radiating non-interacting multi-level atoms or multi-photon sources, prepared in totally antisymmetric states. We find that the radiated intensity is marked by a strong suppression of spontaneous emission in particular directions. In resemblance to the analogous, yet inverted, superradiant emission profiles of $N$ distant two-level atoms prepared in symmetric Dicke states, we call the corresponding emission pattern $\\textit{directional Dicke subradiance}$. We also show"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.04312","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":"2026-05-18T00:20:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2+Qerjaqqt9qpAW5r3PdlDSfo2Xyq3fbhRaeCgr9jVMMFhVfHgrlEHnNoLsu/N5wX5+IXjFs/p6lGCXyk//vCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T09:21:41.027285Z"},"content_sha256":"193ae893c74debcc2178bd8ffe6eaa778651de2fc48fb8b2103a9e1868391042","schema_version":"1.0","event_id":"sha256:193ae893c74debcc2178bd8ffe6eaa778651de2fc48fb8b2103a9e1868391042"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/O4SOO7FOOLNWIWG42R7O66DFID/bundle.json","state_url":"https://pith.science/pith/O4SOO7FOOLNWIWG42R7O66DFID/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/O4SOO7FOOLNWIWG42R7O66DFID/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":"2026-05-30T09:21:41Z","links":{"resolver":"https://pith.science/pith/O4SOO7FOOLNWIWG42R7O66DFID","bundle":"https://pith.science/pith/O4SOO7FOOLNWIWG42R7O66DFID/bundle.json","state":"https://pith.science/pith/O4SOO7FOOLNWIWG42R7O66DFID/state.json","well_known_bundle":"https://pith.science/.well-known/pith/O4SOO7FOOLNWIWG42R7O66DFID/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:O4SOO7FOOLNWIWG42R7O66DFID","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":"2e40f5a2875720c3de0fff75fe407f92beb48a9f5ac28c7e65f818ae9f6dd545","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-12-12T14:35:12Z","title_canon_sha256":"4c25a786e598676a9d175689c01fd852eeb8a33c2de90db373e01e69f8570c32"},"schema_version":"1.0","source":{"id":"1712.04312","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1712.04312","created_at":"2026-05-18T00:20:44Z"},{"alias_kind":"arxiv_version","alias_value":"1712.04312v1","created_at":"2026-05-18T00:20:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.04312","created_at":"2026-05-18T00:20:44Z"},{"alias_kind":"pith_short_12","alias_value":"O4SOO7FOOLNW","created_at":"2026-05-18T12:31:34Z"},{"alias_kind":"pith_short_16","alias_value":"O4SOO7FOOLNWIWG4","created_at":"2026-05-18T12:31:34Z"},{"alias_kind":"pith_short_8","alias_value":"O4SOO7FO","created_at":"2026-05-18T12:31:34Z"}],"graph_snapshots":[{"event_id":"sha256:193ae893c74debcc2178bd8ffe6eaa778651de2fc48fb8b2103a9e1868391042","target":"graph","created_at":"2026-05-18T00:20:44Z","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 investigate Dicke subradiance of distant quantum sources in free space, i.e., the spatial emission pattern of spontaneously radiating non-interacting multi-level atoms or multi-photon sources, prepared in totally antisymmetric states. We find that the radiated intensity is marked by a strong suppression of spontaneous emission in particular directions. In resemblance to the analogous, yet inverted, superradiant emission profiles of $N$ distant two-level atoms prepared in symmetric Dicke states, we call the corresponding emission pattern $\\textit{directional Dicke subradiance}$. We also show","authors_text":"Daniel Bhatti, Joachim von Zanthier, Raimund Schneider, Steffen Oppel","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-12-12T14:35:12Z","title":"Directional Dicke Subradiance with Nonclassical and Classical Light Sources"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.04312","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":"sha256:81f9e40e85eece4b12d524993ea7f525467088b27eb99e5b76f184ce6815ed94","target":"record","created_at":"2026-05-18T00:20:44Z","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":"2e40f5a2875720c3de0fff75fe407f92beb48a9f5ac28c7e65f818ae9f6dd545","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-12-12T14:35:12Z","title_canon_sha256":"4c25a786e598676a9d175689c01fd852eeb8a33c2de90db373e01e69f8570c32"},"schema_version":"1.0","source":{"id":"1712.04312","kind":"arxiv","version":1}},"canonical_sha256":"7724e77cae72db6458dcd47eef786540ddcf28990f60e2358ce25c1dc5f07b1e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7724e77cae72db6458dcd47eef786540ddcf28990f60e2358ce25c1dc5f07b1e","first_computed_at":"2026-05-18T00:20:44.211473Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:20:44.211473Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Skp8Cd1HkjrLDMF9KKp4DtbVHXM8BbvOA9IoFrO3t4o8h+dtoggt8g7FSD+G0qOxuFGgKjNv3myH45WkxyRUDw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:20:44.212181Z","signed_message":"canonical_sha256_bytes"},"source_id":"1712.04312","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:81f9e40e85eece4b12d524993ea7f525467088b27eb99e5b76f184ce6815ed94","sha256:193ae893c74debcc2178bd8ffe6eaa778651de2fc48fb8b2103a9e1868391042"],"state_sha256":"0b8300ae2fe24d8b893ef6f8a5386799095620e25a9f8070725dae10c53dda15"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cNjFDqzjdS59ItdpH21i/LsuWRqDF8OdpnvI8hbM1Cjupjs5XEujunJoEJSkOejijWEvK2Zw+1XUs3Jn9YNvCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T09:21:41.029296Z","bundle_sha256":"2870b101b1dfb4b443dcab38ac4fbd59edb3801d1e5a861ca891a53b72be665d"}}