{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:2RXSGLXBQ54PDTOB23LVFYBE67","short_pith_number":"pith:2RXSGLXB","canonical_record":{"source":{"id":"1310.7421","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-10-28T14:03:28Z","cross_cats_sorted":[],"title_canon_sha256":"602eaa656132e8f04671242c5d6eb671319861b071a238edc33038c79dbade18","abstract_canon_sha256":"5afda8d3af263316a49b7fe84e7ef8c354020c5d4fd8e10a6e1d89a320add99d"},"schema_version":"1.0"},"canonical_sha256":"d46f232ee18778f1cdc1d6d752e024f7ecb60b143690b80faad8cb2a84ec0eb7","source":{"kind":"arxiv","id":"1310.7421","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.7421","created_at":"2026-05-18T03:08:45Z"},{"alias_kind":"arxiv_version","alias_value":"1310.7421v1","created_at":"2026-05-18T03:08:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.7421","created_at":"2026-05-18T03:08:45Z"},{"alias_kind":"pith_short_12","alias_value":"2RXSGLXBQ54P","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_16","alias_value":"2RXSGLXBQ54PDTOB","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_8","alias_value":"2RXSGLXB","created_at":"2026-05-18T12:27:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:2RXSGLXBQ54PDTOB23LVFYBE67","target":"record","payload":{"canonical_record":{"source":{"id":"1310.7421","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-10-28T14:03:28Z","cross_cats_sorted":[],"title_canon_sha256":"602eaa656132e8f04671242c5d6eb671319861b071a238edc33038c79dbade18","abstract_canon_sha256":"5afda8d3af263316a49b7fe84e7ef8c354020c5d4fd8e10a6e1d89a320add99d"},"schema_version":"1.0"},"canonical_sha256":"d46f232ee18778f1cdc1d6d752e024f7ecb60b143690b80faad8cb2a84ec0eb7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:08:45.366348Z","signature_b64":"LyDlcfFr+VrxUsh3BQ7MlHs6jSwgiN4jmk3BlwCtLGV+ys3ZnxgSB3OGILMFh5V5C4HIj6XZbrBMbY+vMwnFDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d46f232ee18778f1cdc1d6d752e024f7ecb60b143690b80faad8cb2a84ec0eb7","last_reissued_at":"2026-05-18T03:08:45.365802Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:08:45.365802Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1310.7421","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":"2026-05-18T03:08:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ROozMVztCUHzbxIOwLFffMk3KE+INKifVKJPyn6RUnAM3F6RUnaMTUtgT6I9P5oqGGSjbgMrezRYgaLfNyiGAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T16:50:25.121795Z"},"content_sha256":"6b5c76d89db892c616337762249a06f6a02b3f89df83d16752bf8d44d75160f3","schema_version":"1.0","event_id":"sha256:6b5c76d89db892c616337762249a06f6a02b3f89df83d16752bf8d44d75160f3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:2RXSGLXBQ54PDTOB23LVFYBE67","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Repeatable two-mode phase measurement","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"G. M. D'Ariano, M. F. Sacchi","submitted_at":"2013-10-28T14:03:28Z","abstract_excerpt":"A measurement scheme to perform a repeatable phase detection on a two-mode field is presented. The interaction with the probe state (the output state of a phase-insensitive high-gain amplifier) is described by a Hamiltonian which is physically realizable in the rotating wave approximation. Information on the system is obtained through unconventional heterodyne measurements performed on the probe field after the interaction with the system. The expressions for the probability distribution and the state reduction are given."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.7421","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":"2026-05-18T03:08:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/f/RG2ZMPBJue3Jsed3HSJ/Ldb+voMBW+O09bI+Xgf46oLC6nov+hYtV3sgwiAbmseMoJP44wUvA+JmsPpYMAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T16:50:25.122485Z"},"content_sha256":"3e6e9e52a74a58fc270b1539848dcc45ed8f25e97e48a9f87a97eee59dc05cf4","schema_version":"1.0","event_id":"sha256:3e6e9e52a74a58fc270b1539848dcc45ed8f25e97e48a9f87a97eee59dc05cf4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2RXSGLXBQ54PDTOB23LVFYBE67/bundle.json","state_url":"https://pith.science/pith/2RXSGLXBQ54PDTOB23LVFYBE67/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2RXSGLXBQ54PDTOB23LVFYBE67/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":"2026-05-28T16:50:25Z","links":{"resolver":"https://pith.science/pith/2RXSGLXBQ54PDTOB23LVFYBE67","bundle":"https://pith.science/pith/2RXSGLXBQ54PDTOB23LVFYBE67/bundle.json","state":"https://pith.science/pith/2RXSGLXBQ54PDTOB23LVFYBE67/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2RXSGLXBQ54PDTOB23LVFYBE67/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:2RXSGLXBQ54PDTOB23LVFYBE67","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":"5afda8d3af263316a49b7fe84e7ef8c354020c5d4fd8e10a6e1d89a320add99d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-10-28T14:03:28Z","title_canon_sha256":"602eaa656132e8f04671242c5d6eb671319861b071a238edc33038c79dbade18"},"schema_version":"1.0","source":{"id":"1310.7421","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.7421","created_at":"2026-05-18T03:08:45Z"},{"alias_kind":"arxiv_version","alias_value":"1310.7421v1","created_at":"2026-05-18T03:08:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.7421","created_at":"2026-05-18T03:08:45Z"},{"alias_kind":"pith_short_12","alias_value":"2RXSGLXBQ54P","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_16","alias_value":"2RXSGLXBQ54PDTOB","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_8","alias_value":"2RXSGLXB","created_at":"2026-05-18T12:27:32Z"}],"graph_snapshots":[{"event_id":"sha256:3e6e9e52a74a58fc270b1539848dcc45ed8f25e97e48a9f87a97eee59dc05cf4","target":"graph","created_at":"2026-05-18T03:08:45Z","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":"A measurement scheme to perform a repeatable phase detection on a two-mode field is presented. The interaction with the probe state (the output state of a phase-insensitive high-gain amplifier) is described by a Hamiltonian which is physically realizable in the rotating wave approximation. Information on the system is obtained through unconventional heterodyne measurements performed on the probe field after the interaction with the system. The expressions for the probability distribution and the state reduction are given.","authors_text":"G. M. D'Ariano, M. F. Sacchi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-10-28T14:03:28Z","title":"Repeatable two-mode phase measurement"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.7421","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":"sha256:6b5c76d89db892c616337762249a06f6a02b3f89df83d16752bf8d44d75160f3","target":"record","created_at":"2026-05-18T03:08:45Z","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":"5afda8d3af263316a49b7fe84e7ef8c354020c5d4fd8e10a6e1d89a320add99d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-10-28T14:03:28Z","title_canon_sha256":"602eaa656132e8f04671242c5d6eb671319861b071a238edc33038c79dbade18"},"schema_version":"1.0","source":{"id":"1310.7421","kind":"arxiv","version":1}},"canonical_sha256":"d46f232ee18778f1cdc1d6d752e024f7ecb60b143690b80faad8cb2a84ec0eb7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d46f232ee18778f1cdc1d6d752e024f7ecb60b143690b80faad8cb2a84ec0eb7","first_computed_at":"2026-05-18T03:08:45.365802Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:08:45.365802Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LyDlcfFr+VrxUsh3BQ7MlHs6jSwgiN4jmk3BlwCtLGV+ys3ZnxgSB3OGILMFh5V5C4HIj6XZbrBMbY+vMwnFDg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:08:45.366348Z","signed_message":"canonical_sha256_bytes"},"source_id":"1310.7421","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6b5c76d89db892c616337762249a06f6a02b3f89df83d16752bf8d44d75160f3","sha256:3e6e9e52a74a58fc270b1539848dcc45ed8f25e97e48a9f87a97eee59dc05cf4"],"state_sha256":"f42deba274b01010dae201e345f816ebb09341b7844cee5ede50fd770f754cb5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JvjdcY1mBas0tmjTA25XXbHRY67nz1VuMkGV6J5t+GHbDZBaGCwVB18sZWGkdAUNwy/SluP3ttSwrh9T83kBDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T16:50:25.126130Z","bundle_sha256":"1393fe6a07dc881de083b773d286227852d528762cbe9c7ac536b8d6850982bf"}}