{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:SZN3DGSJDT73CSHFSBHSTIJB72","short_pith_number":"pith:SZN3DGSJ","canonical_record":{"source":{"id":"0908.4113","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-08-28T00:00:22Z","cross_cats_sorted":[],"title_canon_sha256":"915ed5a9296316f52deb8378112e825afd9637db78c8196ecb6c28655bba2d4a","abstract_canon_sha256":"a83a0107b95e005b92b0ed2f8c7f8e8c9dcfa7ad45922163a840f91d88808f5d"},"schema_version":"1.0"},"canonical_sha256":"965bb19a491cffb148e5904f29a121feaf203563c836cc35dae45501779a2ed9","source":{"kind":"arxiv","id":"0908.4113","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0908.4113","created_at":"2026-05-18T02:12:21Z"},{"alias_kind":"arxiv_version","alias_value":"0908.4113v1","created_at":"2026-05-18T02:12:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0908.4113","created_at":"2026-05-18T02:12:21Z"},{"alias_kind":"pith_short_12","alias_value":"SZN3DGSJDT73","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_16","alias_value":"SZN3DGSJDT73CSHF","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_8","alias_value":"SZN3DGSJ","created_at":"2026-05-18T12:26:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:SZN3DGSJDT73CSHFSBHSTIJB72","target":"record","payload":{"canonical_record":{"source":{"id":"0908.4113","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-08-28T00:00:22Z","cross_cats_sorted":[],"title_canon_sha256":"915ed5a9296316f52deb8378112e825afd9637db78c8196ecb6c28655bba2d4a","abstract_canon_sha256":"a83a0107b95e005b92b0ed2f8c7f8e8c9dcfa7ad45922163a840f91d88808f5d"},"schema_version":"1.0"},"canonical_sha256":"965bb19a491cffb148e5904f29a121feaf203563c836cc35dae45501779a2ed9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:12:21.797720Z","signature_b64":"oCeQx/s2uC4Cb/3xFGxRfUOBBNtmA1RcmwIaQdTd2yRPfGcxKUu/W3zlBjCyeM8mSiEuLFexNa6dBiFYKDr1Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"965bb19a491cffb148e5904f29a121feaf203563c836cc35dae45501779a2ed9","last_reissued_at":"2026-05-18T02:12:21.796920Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:12:21.796920Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0908.4113","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":"2026-05-18T02:12:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UCQnXx5gWvPeuhujNg7w9au3x3qVN4tM4zTs5r60jg/xB0wOWjSgKdI3hrrj5wIX9YMypWqocd5FaO8pHdVJAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T20:40:57.452652Z"},"content_sha256":"7b714e8564c0c356885e331fc72003689a5abe18926fabdcd5a2b542fb221629","schema_version":"1.0","event_id":"sha256:7b714e8564c0c356885e331fc72003689a5abe18926fabdcd5a2b542fb221629"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:SZN3DGSJDT73CSHFSBHSTIJB72","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quantum-optical state engineering up to the two-photon level","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"A.I. Lvovsky, Andrew MacRae, Erwan Bimbard, Nitin Jain","submitted_at":"2009-08-28T00:00:22Z","abstract_excerpt":"We propose and experimentally verify a scheme to engineer arbitrary states of traveling light field up to the two-photon level. The desired state is remotely prepared in the signal channel of spontaneous parametric down-conversion by means of conditional measurements on the idler channel. The measurement consists of bringing the idler field into interference with two ancilla coherent states, followed by two single-photon detectors, which, in coincidence, herald the preparation event. By varying the amplitudes and phases of the ancillae, we can prepare any arbitrary superposition of zero- one- "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0908.4113","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":"2026-05-18T02:12:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tkEo1/Du2sfH7xGDwJm+AQ36s4FmzMoY2OhSSNsLl/FCP/8gbp7oAwWxAawhWAeIsvZ8xmBB27LW2XK2Fm/qDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T20:40:57.452995Z"},"content_sha256":"ed8d3010e9be3176a73c5b357d2bda361b6a9cc525c624871d5aec76fcf1ff52","schema_version":"1.0","event_id":"sha256:ed8d3010e9be3176a73c5b357d2bda361b6a9cc525c624871d5aec76fcf1ff52"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SZN3DGSJDT73CSHFSBHSTIJB72/bundle.json","state_url":"https://pith.science/pith/SZN3DGSJDT73CSHFSBHSTIJB72/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SZN3DGSJDT73CSHFSBHSTIJB72/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":"2026-05-22T20:40:57Z","links":{"resolver":"https://pith.science/pith/SZN3DGSJDT73CSHFSBHSTIJB72","bundle":"https://pith.science/pith/SZN3DGSJDT73CSHFSBHSTIJB72/bundle.json","state":"https://pith.science/pith/SZN3DGSJDT73CSHFSBHSTIJB72/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SZN3DGSJDT73CSHFSBHSTIJB72/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:SZN3DGSJDT73CSHFSBHSTIJB72","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":"a83a0107b95e005b92b0ed2f8c7f8e8c9dcfa7ad45922163a840f91d88808f5d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-08-28T00:00:22Z","title_canon_sha256":"915ed5a9296316f52deb8378112e825afd9637db78c8196ecb6c28655bba2d4a"},"schema_version":"1.0","source":{"id":"0908.4113","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0908.4113","created_at":"2026-05-18T02:12:21Z"},{"alias_kind":"arxiv_version","alias_value":"0908.4113v1","created_at":"2026-05-18T02:12:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0908.4113","created_at":"2026-05-18T02:12:21Z"},{"alias_kind":"pith_short_12","alias_value":"SZN3DGSJDT73","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_16","alias_value":"SZN3DGSJDT73CSHF","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_8","alias_value":"SZN3DGSJ","created_at":"2026-05-18T12:26:01Z"}],"graph_snapshots":[{"event_id":"sha256:ed8d3010e9be3176a73c5b357d2bda361b6a9cc525c624871d5aec76fcf1ff52","target":"graph","created_at":"2026-05-18T02:12:21Z","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 propose and experimentally verify a scheme to engineer arbitrary states of traveling light field up to the two-photon level. The desired state is remotely prepared in the signal channel of spontaneous parametric down-conversion by means of conditional measurements on the idler channel. The measurement consists of bringing the idler field into interference with two ancilla coherent states, followed by two single-photon detectors, which, in coincidence, herald the preparation event. By varying the amplitudes and phases of the ancillae, we can prepare any arbitrary superposition of zero- one- ","authors_text":"A.I. Lvovsky, Andrew MacRae, Erwan Bimbard, Nitin Jain","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-08-28T00:00:22Z","title":"Quantum-optical state engineering up to the two-photon level"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0908.4113","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":"sha256:7b714e8564c0c356885e331fc72003689a5abe18926fabdcd5a2b542fb221629","target":"record","created_at":"2026-05-18T02:12:21Z","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":"a83a0107b95e005b92b0ed2f8c7f8e8c9dcfa7ad45922163a840f91d88808f5d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-08-28T00:00:22Z","title_canon_sha256":"915ed5a9296316f52deb8378112e825afd9637db78c8196ecb6c28655bba2d4a"},"schema_version":"1.0","source":{"id":"0908.4113","kind":"arxiv","version":1}},"canonical_sha256":"965bb19a491cffb148e5904f29a121feaf203563c836cc35dae45501779a2ed9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"965bb19a491cffb148e5904f29a121feaf203563c836cc35dae45501779a2ed9","first_computed_at":"2026-05-18T02:12:21.796920Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:12:21.796920Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"oCeQx/s2uC4Cb/3xFGxRfUOBBNtmA1RcmwIaQdTd2yRPfGcxKUu/W3zlBjCyeM8mSiEuLFexNa6dBiFYKDr1Cw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:12:21.797720Z","signed_message":"canonical_sha256_bytes"},"source_id":"0908.4113","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7b714e8564c0c356885e331fc72003689a5abe18926fabdcd5a2b542fb221629","sha256:ed8d3010e9be3176a73c5b357d2bda361b6a9cc525c624871d5aec76fcf1ff52"],"state_sha256":"7331399e5f96084939519b2c805b1da8a5f4adc7c8b962b7b05c408ce4d91fc5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vggplD88BTyzNK4a4EpYokGHsODWOUTxMnpARzg7X2FKb8fpKkHcDUNMjxfPW0+kisEboqrl5ugAnqYwrXkIAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-22T20:40:57.454974Z","bundle_sha256":"de7896e508bdb98b212551ab3d0eba7cc22171d5705137d58af32448858457c3"}}