{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:SH4ZJPBLPSWVHWKID2ATO5IPSZ","short_pith_number":"pith:SH4ZJPBL","canonical_record":{"source":{"id":"1702.02550","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-02-08T18:19:31Z","cross_cats_sorted":[],"title_canon_sha256":"e18d12d557fd05dc18214830dbb555ed1ab6d318f2b94294c85b51d1bfbc38ca","abstract_canon_sha256":"a58f8c168c37b4802c0acc1faec3e08e10fabce717bb84ad18801fe76c70760c"},"schema_version":"1.0"},"canonical_sha256":"91f994bc2b7cad53d9481e8137750f964341cdeb745f6d47ccee75e0689c1f75","source":{"kind":"arxiv","id":"1702.02550","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1702.02550","created_at":"2026-05-18T00:42:29Z"},{"alias_kind":"arxiv_version","alias_value":"1702.02550v2","created_at":"2026-05-18T00:42:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1702.02550","created_at":"2026-05-18T00:42:29Z"},{"alias_kind":"pith_short_12","alias_value":"SH4ZJPBLPSWV","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"SH4ZJPBLPSWVHWKI","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"SH4ZJPBL","created_at":"2026-05-18T12:31:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:SH4ZJPBLPSWVHWKID2ATO5IPSZ","target":"record","payload":{"canonical_record":{"source":{"id":"1702.02550","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-02-08T18:19:31Z","cross_cats_sorted":[],"title_canon_sha256":"e18d12d557fd05dc18214830dbb555ed1ab6d318f2b94294c85b51d1bfbc38ca","abstract_canon_sha256":"a58f8c168c37b4802c0acc1faec3e08e10fabce717bb84ad18801fe76c70760c"},"schema_version":"1.0"},"canonical_sha256":"91f994bc2b7cad53d9481e8137750f964341cdeb745f6d47ccee75e0689c1f75","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:42:29.769684Z","signature_b64":"k0RrSW5H42TcEfJiDdOM6iDgzUfDX43joof+Bn03iwcoGMVhV2H5XONvsdAtYOI1ag5X+ZmJAfzK2dTT4eQ1AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"91f994bc2b7cad53d9481e8137750f964341cdeb745f6d47ccee75e0689c1f75","last_reissued_at":"2026-05-18T00:42:29.769195Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:42:29.769195Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1702.02550","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":"2026-05-18T00:42:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EQGx/8K4G9M4FrD0HJkNfhYAKA2/7DzdXnwfcIVyP9D62toifB6VWn4a8CczfVgSdwgKfyQUnG9hB1YO/HW7BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T07:34:56.419614Z"},"content_sha256":"bc7b5318fe31f77a5d8301322b8d1c69aff447fa1d5680df66c1ea065524da9f","schema_version":"1.0","event_id":"sha256:bc7b5318fe31f77a5d8301322b8d1c69aff447fa1d5680df66c1ea065524da9f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:SH4ZJPBLPSWVHWKID2ATO5IPSZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Time-dependent quantum correlations in phase space","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Fabian Krumm, Jan Sperling, Werner Vogel","submitted_at":"2017-02-08T18:19:31Z","abstract_excerpt":"General quasi-probabilities are introduced to visualize time-dependent quantum correlations of light in phase space. They are based on the generalization of the Glauber-Sudarshan P function to a time-dependent P functional [W. Vogel, Phys. Rev. Lett. 100, 013605 (2008)], which fully describes temporal correlations of radiation fields on the basis of continuous phase-space distributions. This approach is nontrivial as the P functional itself is highly singular for many quantum states and nonlinear processes. In general, it neither yields a well-behaved nor an experimentally accessible descripti"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1702.02550","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":"2026-05-18T00:42:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"K6nnPhUzPgQQ8JCy16BDaxizatiz0/yCrC6hYHaygXUiUMf+PfcLrXTgfArQOAiB9iHTK75VzcFmTto6DttIAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T07:34:56.420195Z"},"content_sha256":"d22dac1c76cb88470296b5dd06bea0a46df1badddc9af3734e2c8b020aa7e7ad","schema_version":"1.0","event_id":"sha256:d22dac1c76cb88470296b5dd06bea0a46df1badddc9af3734e2c8b020aa7e7ad"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SH4ZJPBLPSWVHWKID2ATO5IPSZ/bundle.json","state_url":"https://pith.science/pith/SH4ZJPBLPSWVHWKID2ATO5IPSZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SH4ZJPBLPSWVHWKID2ATO5IPSZ/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":"2026-05-27T07:34:56Z","links":{"resolver":"https://pith.science/pith/SH4ZJPBLPSWVHWKID2ATO5IPSZ","bundle":"https://pith.science/pith/SH4ZJPBLPSWVHWKID2ATO5IPSZ/bundle.json","state":"https://pith.science/pith/SH4ZJPBLPSWVHWKID2ATO5IPSZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SH4ZJPBLPSWVHWKID2ATO5IPSZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:SH4ZJPBLPSWVHWKID2ATO5IPSZ","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":"a58f8c168c37b4802c0acc1faec3e08e10fabce717bb84ad18801fe76c70760c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-02-08T18:19:31Z","title_canon_sha256":"e18d12d557fd05dc18214830dbb555ed1ab6d318f2b94294c85b51d1bfbc38ca"},"schema_version":"1.0","source":{"id":"1702.02550","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1702.02550","created_at":"2026-05-18T00:42:29Z"},{"alias_kind":"arxiv_version","alias_value":"1702.02550v2","created_at":"2026-05-18T00:42:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1702.02550","created_at":"2026-05-18T00:42:29Z"},{"alias_kind":"pith_short_12","alias_value":"SH4ZJPBLPSWV","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"SH4ZJPBLPSWVHWKI","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"SH4ZJPBL","created_at":"2026-05-18T12:31:43Z"}],"graph_snapshots":[{"event_id":"sha256:d22dac1c76cb88470296b5dd06bea0a46df1badddc9af3734e2c8b020aa7e7ad","target":"graph","created_at":"2026-05-18T00:42:29Z","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":"General quasi-probabilities are introduced to visualize time-dependent quantum correlations of light in phase space. They are based on the generalization of the Glauber-Sudarshan P function to a time-dependent P functional [W. Vogel, Phys. Rev. Lett. 100, 013605 (2008)], which fully describes temporal correlations of radiation fields on the basis of continuous phase-space distributions. This approach is nontrivial as the P functional itself is highly singular for many quantum states and nonlinear processes. In general, it neither yields a well-behaved nor an experimentally accessible descripti","authors_text":"Fabian Krumm, Jan Sperling, Werner Vogel","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-02-08T18:19:31Z","title":"Time-dependent quantum correlations in phase space"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1702.02550","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:bc7b5318fe31f77a5d8301322b8d1c69aff447fa1d5680df66c1ea065524da9f","target":"record","created_at":"2026-05-18T00:42:29Z","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":"a58f8c168c37b4802c0acc1faec3e08e10fabce717bb84ad18801fe76c70760c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-02-08T18:19:31Z","title_canon_sha256":"e18d12d557fd05dc18214830dbb555ed1ab6d318f2b94294c85b51d1bfbc38ca"},"schema_version":"1.0","source":{"id":"1702.02550","kind":"arxiv","version":2}},"canonical_sha256":"91f994bc2b7cad53d9481e8137750f964341cdeb745f6d47ccee75e0689c1f75","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"91f994bc2b7cad53d9481e8137750f964341cdeb745f6d47ccee75e0689c1f75","first_computed_at":"2026-05-18T00:42:29.769195Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:42:29.769195Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"k0RrSW5H42TcEfJiDdOM6iDgzUfDX43joof+Bn03iwcoGMVhV2H5XONvsdAtYOI1ag5X+ZmJAfzK2dTT4eQ1AQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:42:29.769684Z","signed_message":"canonical_sha256_bytes"},"source_id":"1702.02550","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bc7b5318fe31f77a5d8301322b8d1c69aff447fa1d5680df66c1ea065524da9f","sha256:d22dac1c76cb88470296b5dd06bea0a46df1badddc9af3734e2c8b020aa7e7ad"],"state_sha256":"6f559994b1f6964cbadf1438052da0aef24a62e90b170471193c1c1e9f1b9374"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qqzWzeRjxrMnQjueDxOxBJURmE67vKl86ylQK2GGkXop25sq5AGWAJ3IjMsNuB+qygL3nnIrEmneETLK7IWEAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T07:34:56.423100Z","bundle_sha256":"de5c4672270f0e63ea1063ab7183bf13b9946e3e0f9b9a5f4c245b347fd2e77a"}}