{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:WKKDCN4CEUNWUEKD47MWSUYMHM","short_pith_number":"pith:WKKDCN4C","canonical_record":{"source":{"id":"1103.2779","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-03-14T20:26:53Z","cross_cats_sorted":[],"title_canon_sha256":"2b09614b3b1659021e0b0834b5ca77cf4359f3181abf57ebb9144886a99eaf91","abstract_canon_sha256":"c17a24ccb874bc8a04b4ed7c9ab5f3bcd66b192546be7cb2bb49cd737378d60f"},"schema_version":"1.0"},"canonical_sha256":"b294313782251b6a1143e7d969530c3b3cfa708499c62f3104b147321b3dcd0b","source":{"kind":"arxiv","id":"1103.2779","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1103.2779","created_at":"2026-05-18T04:16:53Z"},{"alias_kind":"arxiv_version","alias_value":"1103.2779v2","created_at":"2026-05-18T04:16:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1103.2779","created_at":"2026-05-18T04:16:53Z"},{"alias_kind":"pith_short_12","alias_value":"WKKDCN4CEUNW","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_16","alias_value":"WKKDCN4CEUNWUEKD","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_8","alias_value":"WKKDCN4C","created_at":"2026-05-18T12:26:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:WKKDCN4CEUNWUEKD47MWSUYMHM","target":"record","payload":{"canonical_record":{"source":{"id":"1103.2779","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-03-14T20:26:53Z","cross_cats_sorted":[],"title_canon_sha256":"2b09614b3b1659021e0b0834b5ca77cf4359f3181abf57ebb9144886a99eaf91","abstract_canon_sha256":"c17a24ccb874bc8a04b4ed7c9ab5f3bcd66b192546be7cb2bb49cd737378d60f"},"schema_version":"1.0"},"canonical_sha256":"b294313782251b6a1143e7d969530c3b3cfa708499c62f3104b147321b3dcd0b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:16:53.417786Z","signature_b64":"mEL/DYtgdnuBsOf5QUaN2wAhuuqWinGOhmrJbvc0NqfG/Z4Yc8WrlLDnl9RMfeR9qS4BJ+bh9DL6rEW1sZfPBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b294313782251b6a1143e7d969530c3b3cfa708499c62f3104b147321b3dcd0b","last_reissued_at":"2026-05-18T04:16:53.416919Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:16:53.416919Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1103.2779","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":"2026-05-18T04:16:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"h9+vjE2PluvUsSPsfhwDtsgoeywheDTTpRgZ5r9onaFl7dT6++5wQ05k2XXInWDNE80gHCHHIxRxTqx7xEPRAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T21:56:50.967065Z"},"content_sha256":"5539bc7d907015d992f93cbbcaf976e5b29e36483ab3e9bb4522c9566dddd6ff","schema_version":"1.0","event_id":"sha256:5539bc7d907015d992f93cbbcaf976e5b29e36483ab3e9bb4522c9566dddd6ff"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:WKKDCN4CEUNWUEKD47MWSUYMHM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Detecting entanglement in spatial interference","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Clemens Gneiting, Klaus Hornberger","submitted_at":"2011-03-14T20:26:53Z","abstract_excerpt":"We discuss an experimentally amenable class of two-particle states of motion giving rise to nonlocal spatial interference under position measurements. Using the concept of modular variables, we derive a separability criterion which is violated by these non-Gaussian states. While we focus on the free motion of material particles, the presented results are valid for any pair of canonically conjugate continuous variable observables and should apply to a variety of bipartite interference phenomena."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1103.2779","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":"2026-05-18T04:16:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"C7n5dRwtDdqlAClLr81ud6Y7/VdjOZYb6/u8zRLJZ/4phxDQSAO50ipIkMxMrQmLE16RAWx4QuI3vOQRUUXEBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T21:56:50.967482Z"},"content_sha256":"edb452f2c75a074aa7b2641c65811eb3e2d283646a4f48966d817322c8539dcb","schema_version":"1.0","event_id":"sha256:edb452f2c75a074aa7b2641c65811eb3e2d283646a4f48966d817322c8539dcb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WKKDCN4CEUNWUEKD47MWSUYMHM/bundle.json","state_url":"https://pith.science/pith/WKKDCN4CEUNWUEKD47MWSUYMHM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WKKDCN4CEUNWUEKD47MWSUYMHM/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":"2026-05-26T21:56:50Z","links":{"resolver":"https://pith.science/pith/WKKDCN4CEUNWUEKD47MWSUYMHM","bundle":"https://pith.science/pith/WKKDCN4CEUNWUEKD47MWSUYMHM/bundle.json","state":"https://pith.science/pith/WKKDCN4CEUNWUEKD47MWSUYMHM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WKKDCN4CEUNWUEKD47MWSUYMHM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:WKKDCN4CEUNWUEKD47MWSUYMHM","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":"c17a24ccb874bc8a04b4ed7c9ab5f3bcd66b192546be7cb2bb49cd737378d60f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-03-14T20:26:53Z","title_canon_sha256":"2b09614b3b1659021e0b0834b5ca77cf4359f3181abf57ebb9144886a99eaf91"},"schema_version":"1.0","source":{"id":"1103.2779","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1103.2779","created_at":"2026-05-18T04:16:53Z"},{"alias_kind":"arxiv_version","alias_value":"1103.2779v2","created_at":"2026-05-18T04:16:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1103.2779","created_at":"2026-05-18T04:16:53Z"},{"alias_kind":"pith_short_12","alias_value":"WKKDCN4CEUNW","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_16","alias_value":"WKKDCN4CEUNWUEKD","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_8","alias_value":"WKKDCN4C","created_at":"2026-05-18T12:26:44Z"}],"graph_snapshots":[{"event_id":"sha256:edb452f2c75a074aa7b2641c65811eb3e2d283646a4f48966d817322c8539dcb","target":"graph","created_at":"2026-05-18T04:16:53Z","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 discuss an experimentally amenable class of two-particle states of motion giving rise to nonlocal spatial interference under position measurements. Using the concept of modular variables, we derive a separability criterion which is violated by these non-Gaussian states. While we focus on the free motion of material particles, the presented results are valid for any pair of canonically conjugate continuous variable observables and should apply to a variety of bipartite interference phenomena.","authors_text":"Clemens Gneiting, Klaus Hornberger","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-03-14T20:26:53Z","title":"Detecting entanglement in spatial interference"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1103.2779","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":"sha256:5539bc7d907015d992f93cbbcaf976e5b29e36483ab3e9bb4522c9566dddd6ff","target":"record","created_at":"2026-05-18T04:16:53Z","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":"c17a24ccb874bc8a04b4ed7c9ab5f3bcd66b192546be7cb2bb49cd737378d60f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-03-14T20:26:53Z","title_canon_sha256":"2b09614b3b1659021e0b0834b5ca77cf4359f3181abf57ebb9144886a99eaf91"},"schema_version":"1.0","source":{"id":"1103.2779","kind":"arxiv","version":2}},"canonical_sha256":"b294313782251b6a1143e7d969530c3b3cfa708499c62f3104b147321b3dcd0b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b294313782251b6a1143e7d969530c3b3cfa708499c62f3104b147321b3dcd0b","first_computed_at":"2026-05-18T04:16:53.416919Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:16:53.416919Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"mEL/DYtgdnuBsOf5QUaN2wAhuuqWinGOhmrJbvc0NqfG/Z4Yc8WrlLDnl9RMfeR9qS4BJ+bh9DL6rEW1sZfPBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:16:53.417786Z","signed_message":"canonical_sha256_bytes"},"source_id":"1103.2779","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5539bc7d907015d992f93cbbcaf976e5b29e36483ab3e9bb4522c9566dddd6ff","sha256:edb452f2c75a074aa7b2641c65811eb3e2d283646a4f48966d817322c8539dcb"],"state_sha256":"a860d4f819c716fe850829d79b404d50efab346b9220a4fcc909c16860c8e1c4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IWvl0SaDB0Y0yX5Gv46YseCQcOzCSbV0wfL+TZMw5RjDGPrVL1HGuvcBzto8hHsOAjXMGgDPeoijLHrVoFLODA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T21:56:50.969798Z","bundle_sha256":"04e773f1dcae45310199000fc57fbdd71dfb052e77f7c6516edd454df3584b71"}}