{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:NZNBQF624P7LBIQ25ZZB64M2W5","short_pith_number":"pith:NZNBQF62","canonical_record":{"source":{"id":"1606.02036","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-06-07T06:24:49Z","cross_cats_sorted":[],"title_canon_sha256":"e50b21f1186d8f44c2cea340ff46496da1de808b6759173c81d01727f99b20eb","abstract_canon_sha256":"6eb8a129aae43e3b3e45ea1b094aed942a7f9aa2b73d089da78353d46f80bc8d"},"schema_version":"1.0"},"canonical_sha256":"6e5a1817dae3feb0a21aee721f719ab779129e47596403094984b3dec625d6f9","source":{"kind":"arxiv","id":"1606.02036","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1606.02036","created_at":"2026-05-18T00:54:20Z"},{"alias_kind":"arxiv_version","alias_value":"1606.02036v2","created_at":"2026-05-18T00:54:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1606.02036","created_at":"2026-05-18T00:54:20Z"},{"alias_kind":"pith_short_12","alias_value":"NZNBQF624P7L","created_at":"2026-05-18T12:30:36Z"},{"alias_kind":"pith_short_16","alias_value":"NZNBQF624P7LBIQ2","created_at":"2026-05-18T12:30:36Z"},{"alias_kind":"pith_short_8","alias_value":"NZNBQF62","created_at":"2026-05-18T12:30:36Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:NZNBQF624P7LBIQ25ZZB64M2W5","target":"record","payload":{"canonical_record":{"source":{"id":"1606.02036","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-06-07T06:24:49Z","cross_cats_sorted":[],"title_canon_sha256":"e50b21f1186d8f44c2cea340ff46496da1de808b6759173c81d01727f99b20eb","abstract_canon_sha256":"6eb8a129aae43e3b3e45ea1b094aed942a7f9aa2b73d089da78353d46f80bc8d"},"schema_version":"1.0"},"canonical_sha256":"6e5a1817dae3feb0a21aee721f719ab779129e47596403094984b3dec625d6f9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:54:20.316836Z","signature_b64":"T8RqtAfTcSjKZnzeq0hk343NZXJ8b88/m7+EXk7PEh11Tyu+t2yTROt1Rin6J+RPxPVAqmTC9LKgfbRbCwU2Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6e5a1817dae3feb0a21aee721f719ab779129e47596403094984b3dec625d6f9","last_reissued_at":"2026-05-18T00:54:20.316421Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:54:20.316421Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1606.02036","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:54:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"e8RNo2xYbsYPsMkimO98yhP9pZq9Hk7mi2W0hO7EYN9Nsy16NrZLJSuIY+CbtxkfNnQ7t5cPwj3BXNtXhflxCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T09:11:20.228086Z"},"content_sha256":"2aea62b75ac4390cf362b7335441b0d3e5688f5bb391e4afb5e48dc255e4d1a4","schema_version":"1.0","event_id":"sha256:2aea62b75ac4390cf362b7335441b0d3e5688f5bb391e4afb5e48dc255e4d1a4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:NZNBQF624P7LBIQ25ZZB64M2W5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Einstein-Podolsky-Rosen Entanglement of Narrowband Photons from Cold Atoms","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Jong-Chan Lee, Kwang-Kyoon Park, Tian-Ming Zhao, Yoon-Ho Kim","submitted_at":"2016-06-07T06:24:49Z","abstract_excerpt":"Einstein-Podolsky-Rosen (EPR) entanglement introduced in 1935 deals with two particles that are entangled in their positions and momenta. Here we report the first experimental demonstration of EPR position-momentum entanglement of narrowband photon pairs generated from cold atoms. By using two-photon quantum ghost imaging and ghost interference, we demonstrate explicitly that the narrowband photon pairs violate the separability criterion, confirming EPR entanglement. We further demonstrate continuous variable EPR steering for positions and momenta of the two photons. Our new source of EPR-enta"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.02036","kind":"arxiv","version":2},"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":"2026-05-18T00:54:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sZwMa/CuR9FJaHIQJVL6xHvIdfk0MphE213QX+dV/UEpXG9Wh1IflBTZus2gEFKBBeU3z99ip2fnhdtXG/73DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T09:11:20.228463Z"},"content_sha256":"6654f4c2bc2a9d91eb870c128344b696dffe6a599b5d2e0ba40411b3fae69213","schema_version":"1.0","event_id":"sha256:6654f4c2bc2a9d91eb870c128344b696dffe6a599b5d2e0ba40411b3fae69213"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NZNBQF624P7LBIQ25ZZB64M2W5/bundle.json","state_url":"https://pith.science/pith/NZNBQF624P7LBIQ25ZZB64M2W5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NZNBQF624P7LBIQ25ZZB64M2W5/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":"2026-05-28T09:11:20Z","links":{"resolver":"https://pith.science/pith/NZNBQF624P7LBIQ25ZZB64M2W5","bundle":"https://pith.science/pith/NZNBQF624P7LBIQ25ZZB64M2W5/bundle.json","state":"https://pith.science/pith/NZNBQF624P7LBIQ25ZZB64M2W5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NZNBQF624P7LBIQ25ZZB64M2W5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:NZNBQF624P7LBIQ25ZZB64M2W5","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":"6eb8a129aae43e3b3e45ea1b094aed942a7f9aa2b73d089da78353d46f80bc8d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-06-07T06:24:49Z","title_canon_sha256":"e50b21f1186d8f44c2cea340ff46496da1de808b6759173c81d01727f99b20eb"},"schema_version":"1.0","source":{"id":"1606.02036","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1606.02036","created_at":"2026-05-18T00:54:20Z"},{"alias_kind":"arxiv_version","alias_value":"1606.02036v2","created_at":"2026-05-18T00:54:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1606.02036","created_at":"2026-05-18T00:54:20Z"},{"alias_kind":"pith_short_12","alias_value":"NZNBQF624P7L","created_at":"2026-05-18T12:30:36Z"},{"alias_kind":"pith_short_16","alias_value":"NZNBQF624P7LBIQ2","created_at":"2026-05-18T12:30:36Z"},{"alias_kind":"pith_short_8","alias_value":"NZNBQF62","created_at":"2026-05-18T12:30:36Z"}],"graph_snapshots":[{"event_id":"sha256:6654f4c2bc2a9d91eb870c128344b696dffe6a599b5d2e0ba40411b3fae69213","target":"graph","created_at":"2026-05-18T00:54:20Z","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":"Einstein-Podolsky-Rosen (EPR) entanglement introduced in 1935 deals with two particles that are entangled in their positions and momenta. Here we report the first experimental demonstration of EPR position-momentum entanglement of narrowband photon pairs generated from cold atoms. By using two-photon quantum ghost imaging and ghost interference, we demonstrate explicitly that the narrowband photon pairs violate the separability criterion, confirming EPR entanglement. We further demonstrate continuous variable EPR steering for positions and momenta of the two photons. Our new source of EPR-enta","authors_text":"Jong-Chan Lee, Kwang-Kyoon Park, Tian-Ming Zhao, Yoon-Ho Kim","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-06-07T06:24:49Z","title":"Einstein-Podolsky-Rosen Entanglement of Narrowband Photons from Cold Atoms"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.02036","kind":"arxiv","version":2},"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":"sha256:2aea62b75ac4390cf362b7335441b0d3e5688f5bb391e4afb5e48dc255e4d1a4","target":"record","created_at":"2026-05-18T00:54:20Z","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":"6eb8a129aae43e3b3e45ea1b094aed942a7f9aa2b73d089da78353d46f80bc8d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-06-07T06:24:49Z","title_canon_sha256":"e50b21f1186d8f44c2cea340ff46496da1de808b6759173c81d01727f99b20eb"},"schema_version":"1.0","source":{"id":"1606.02036","kind":"arxiv","version":2}},"canonical_sha256":"6e5a1817dae3feb0a21aee721f719ab779129e47596403094984b3dec625d6f9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6e5a1817dae3feb0a21aee721f719ab779129e47596403094984b3dec625d6f9","first_computed_at":"2026-05-18T00:54:20.316421Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:54:20.316421Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"T8RqtAfTcSjKZnzeq0hk343NZXJ8b88/m7+EXk7PEh11Tyu+t2yTROt1Rin6J+RPxPVAqmTC9LKgfbRbCwU2Bw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:54:20.316836Z","signed_message":"canonical_sha256_bytes"},"source_id":"1606.02036","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2aea62b75ac4390cf362b7335441b0d3e5688f5bb391e4afb5e48dc255e4d1a4","sha256:6654f4c2bc2a9d91eb870c128344b696dffe6a599b5d2e0ba40411b3fae69213"],"state_sha256":"c9bd0ab49265f8d5e11c8f83508d30bd7b1d4dab9151a8ce8ff5ab1d27350430"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Rk0XxwRLXZyLFRUuNKpffRt4ih4J+3G6QK+TGJKx05pRDOP1eTn4W7XcRDKvqcNOFsy8880nR2OZUbGZWW/DCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T09:11:20.230822Z","bundle_sha256":"85c468fe4a68f5244314e15d74ce0c655e3fb2d6732a6a3d94439fe9f0326303"}}