{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:VTJJR6X7OPO76SQLVT4GTJK4VH","short_pith_number":"pith:VTJJR6X7","canonical_record":{"source":{"id":"0809.3689","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2008-09-22T12:06:26Z","cross_cats_sorted":[],"title_canon_sha256":"51c08dd690000c242123ff158e6e45f9005ac05b60aae3c021b9c8c375123abb","abstract_canon_sha256":"9bce5d831c6f4a496c230dfbba9c3edffa830a7b5d944a00f58e0a74c76774ea"},"schema_version":"1.0"},"canonical_sha256":"acd298faff73ddff4a0bacf869a55ca9d926e3bdedc588dc1fb533ad91ddea19","source":{"kind":"arxiv","id":"0809.3689","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0809.3689","created_at":"2026-05-18T02:47:23Z"},{"alias_kind":"arxiv_version","alias_value":"0809.3689v1","created_at":"2026-05-18T02:47:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0809.3689","created_at":"2026-05-18T02:47:23Z"},{"alias_kind":"pith_short_12","alias_value":"VTJJR6X7OPO7","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"VTJJR6X7OPO76SQL","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"VTJJR6X7","created_at":"2026-05-18T12:25:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:VTJJR6X7OPO76SQLVT4GTJK4VH","target":"record","payload":{"canonical_record":{"source":{"id":"0809.3689","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2008-09-22T12:06:26Z","cross_cats_sorted":[],"title_canon_sha256":"51c08dd690000c242123ff158e6e45f9005ac05b60aae3c021b9c8c375123abb","abstract_canon_sha256":"9bce5d831c6f4a496c230dfbba9c3edffa830a7b5d944a00f58e0a74c76774ea"},"schema_version":"1.0"},"canonical_sha256":"acd298faff73ddff4a0bacf869a55ca9d926e3bdedc588dc1fb533ad91ddea19","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:47:23.372564Z","signature_b64":"kneI3YOIz8gw/5zhYwCtFQ5CkEnOfYugH6edpK1HNr+0kGNnGTvkQJ/h6G4tVfPDpN6U+A9p7yIMbR10J6eQCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"acd298faff73ddff4a0bacf869a55ca9d926e3bdedc588dc1fb533ad91ddea19","last_reissued_at":"2026-05-18T02:47:23.372157Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:47:23.372157Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0809.3689","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":"2026-05-18T02:47:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cExn3VJuECPfmLLMCQG7SInCvKrNFMGXzrnCeWnrRpU4kafPa4Wm25FCwXf8dG1TVnqOasl1ZKBboUX07jqJAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T17:31:41.297959Z"},"content_sha256":"4385e47220fdadaa7055a8492f531349ad3f72bcc42ae2151df3383548e0ca8f","schema_version":"1.0","event_id":"sha256:4385e47220fdadaa7055a8492f531349ad3f72bcc42ae2151df3383548e0ca8f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:VTJJR6X7OPO76SQLVT4GTJK4VH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quantum teleportation and entanglement swapping with linear optics logic gates","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Anton Zeilinger, Christian Schmid, Harald Weinfurter, Nikolai Kiesel, Rupert Ursin, Ulrich K. Weber","submitted_at":"2008-09-22T12:06:26Z","abstract_excerpt":"We report on the usage of a linear optics phase gate for distinguishing all four Bell states simultaneously in a quantum teleportation and entanglement swapping protocol. This is demonstrated by full state tomography of the one and two qubit output states of the two protocols, yielding average state fidelities of about 0.83 and 0.77, respectively. In addition, the performance of the teleportation channel is characterised by quantum process tomography. The non classical properties of the entanglement swapping output states are further confirmed by the violation of a CHSH-type Bell inequality of"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0809.3689","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":"2026-05-18T02:47:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tapeyXdKDm4i1Y3Mp4sESXrlWyKfJshPNl5KZWuwa+q3lAtqxOAxs+WbCq2qOJ3Ya8M91Fnz2erGaa5jB/s+Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T17:31:41.298608Z"},"content_sha256":"550def5a9f4d1da04fee9a9aff24b7a9e849dc3ec2893a7170210ec7bbb7abfa","schema_version":"1.0","event_id":"sha256:550def5a9f4d1da04fee9a9aff24b7a9e849dc3ec2893a7170210ec7bbb7abfa"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VTJJR6X7OPO76SQLVT4GTJK4VH/bundle.json","state_url":"https://pith.science/pith/VTJJR6X7OPO76SQLVT4GTJK4VH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VTJJR6X7OPO76SQLVT4GTJK4VH/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":"2026-05-25T17:31:41Z","links":{"resolver":"https://pith.science/pith/VTJJR6X7OPO76SQLVT4GTJK4VH","bundle":"https://pith.science/pith/VTJJR6X7OPO76SQLVT4GTJK4VH/bundle.json","state":"https://pith.science/pith/VTJJR6X7OPO76SQLVT4GTJK4VH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VTJJR6X7OPO76SQLVT4GTJK4VH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:VTJJR6X7OPO76SQLVT4GTJK4VH","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":"9bce5d831c6f4a496c230dfbba9c3edffa830a7b5d944a00f58e0a74c76774ea","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2008-09-22T12:06:26Z","title_canon_sha256":"51c08dd690000c242123ff158e6e45f9005ac05b60aae3c021b9c8c375123abb"},"schema_version":"1.0","source":{"id":"0809.3689","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0809.3689","created_at":"2026-05-18T02:47:23Z"},{"alias_kind":"arxiv_version","alias_value":"0809.3689v1","created_at":"2026-05-18T02:47:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0809.3689","created_at":"2026-05-18T02:47:23Z"},{"alias_kind":"pith_short_12","alias_value":"VTJJR6X7OPO7","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"VTJJR6X7OPO76SQL","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"VTJJR6X7","created_at":"2026-05-18T12:25:58Z"}],"graph_snapshots":[{"event_id":"sha256:550def5a9f4d1da04fee9a9aff24b7a9e849dc3ec2893a7170210ec7bbb7abfa","target":"graph","created_at":"2026-05-18T02:47:23Z","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 report on the usage of a linear optics phase gate for distinguishing all four Bell states simultaneously in a quantum teleportation and entanglement swapping protocol. This is demonstrated by full state tomography of the one and two qubit output states of the two protocols, yielding average state fidelities of about 0.83 and 0.77, respectively. In addition, the performance of the teleportation channel is characterised by quantum process tomography. The non classical properties of the entanglement swapping output states are further confirmed by the violation of a CHSH-type Bell inequality of","authors_text":"Anton Zeilinger, Christian Schmid, Harald Weinfurter, Nikolai Kiesel, Rupert Ursin, Ulrich K. Weber","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2008-09-22T12:06:26Z","title":"Quantum teleportation and entanglement swapping with linear optics logic gates"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0809.3689","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":"sha256:4385e47220fdadaa7055a8492f531349ad3f72bcc42ae2151df3383548e0ca8f","target":"record","created_at":"2026-05-18T02:47:23Z","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":"9bce5d831c6f4a496c230dfbba9c3edffa830a7b5d944a00f58e0a74c76774ea","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2008-09-22T12:06:26Z","title_canon_sha256":"51c08dd690000c242123ff158e6e45f9005ac05b60aae3c021b9c8c375123abb"},"schema_version":"1.0","source":{"id":"0809.3689","kind":"arxiv","version":1}},"canonical_sha256":"acd298faff73ddff4a0bacf869a55ca9d926e3bdedc588dc1fb533ad91ddea19","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"acd298faff73ddff4a0bacf869a55ca9d926e3bdedc588dc1fb533ad91ddea19","first_computed_at":"2026-05-18T02:47:23.372157Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:47:23.372157Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kneI3YOIz8gw/5zhYwCtFQ5CkEnOfYugH6edpK1HNr+0kGNnGTvkQJ/h6G4tVfPDpN6U+A9p7yIMbR10J6eQCw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:47:23.372564Z","signed_message":"canonical_sha256_bytes"},"source_id":"0809.3689","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4385e47220fdadaa7055a8492f531349ad3f72bcc42ae2151df3383548e0ca8f","sha256:550def5a9f4d1da04fee9a9aff24b7a9e849dc3ec2893a7170210ec7bbb7abfa"],"state_sha256":"71123621c92e16fa422480a78f129c18cdd65037b7ac9b23ca4077ce5bfa2ae3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KsLpsAfn9sKuNuEBjDMvvUHBuQxx7VuFCBqWClTF/lc+VCCBJ7aRcXIwUgVHAPsBLcGiM3a68VYXlqtlT4AbBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T17:31:41.301800Z","bundle_sha256":"8dc0affbd61a57b3fae86e8c83b26eae71e073a831fcf2485478791d6223b975"}}