{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:KJPWQU3EKWWNUVY7PPR47RSQNQ","short_pith_number":"pith:KJPWQU3E","canonical_record":{"source":{"id":"1611.01283","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-11-04T08:07:16Z","cross_cats_sorted":["physics.ins-det","quant-ph"],"title_canon_sha256":"2260f259d29f95cbb4ad7b6d9babbcc53cec01b5e56e90eb857563b684249bb1","abstract_canon_sha256":"549c2f7f7f9c7b12f2a791431de80b22dd91f207c148146da8beafad48e696f3"},"schema_version":"1.0"},"canonical_sha256":"525f68536455acda571f7be3cfc6506c34604039caa3493a8b72a1a3c3ee1b4d","source":{"kind":"arxiv","id":"1611.01283","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.01283","created_at":"2026-05-18T00:48:59Z"},{"alias_kind":"arxiv_version","alias_value":"1611.01283v3","created_at":"2026-05-18T00:48:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.01283","created_at":"2026-05-18T00:48:59Z"},{"alias_kind":"pith_short_12","alias_value":"KJPWQU3EKWWN","created_at":"2026-05-18T12:30:25Z"},{"alias_kind":"pith_short_16","alias_value":"KJPWQU3EKWWNUVY7","created_at":"2026-05-18T12:30:25Z"},{"alias_kind":"pith_short_8","alias_value":"KJPWQU3E","created_at":"2026-05-18T12:30:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:KJPWQU3EKWWNUVY7PPR47RSQNQ","target":"record","payload":{"canonical_record":{"source":{"id":"1611.01283","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-11-04T08:07:16Z","cross_cats_sorted":["physics.ins-det","quant-ph"],"title_canon_sha256":"2260f259d29f95cbb4ad7b6d9babbcc53cec01b5e56e90eb857563b684249bb1","abstract_canon_sha256":"549c2f7f7f9c7b12f2a791431de80b22dd91f207c148146da8beafad48e696f3"},"schema_version":"1.0"},"canonical_sha256":"525f68536455acda571f7be3cfc6506c34604039caa3493a8b72a1a3c3ee1b4d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:48:59.758448Z","signature_b64":"Umg7b8/hp65w0+f8xrCk0exkRs7GQd8c3TrL7PdzLggKZenH1uFJfLPwqkaHf3+FRYiwF2DgkGX64GvoqeMrCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"525f68536455acda571f7be3cfc6506c34604039caa3493a8b72a1a3c3ee1b4d","last_reissued_at":"2026-05-18T00:48:59.757565Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:48:59.757565Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1611.01283","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:48:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2WoV9x/aNordU2djNkzClrLgErwul2xlQgrgHYzvS+RD6VDdmS1SJIZhvKoJpuBPjMzmo659N2LZ/dr3HiuYCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T14:48:15.335781Z"},"content_sha256":"5f677c7ed1ab44844e1bc260e446c930cef57afc458fc06cf3bdcde93015b7e1","schema_version":"1.0","event_id":"sha256:5f677c7ed1ab44844e1bc260e446c930cef57afc458fc06cf3bdcde93015b7e1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:KJPWQU3EKWWNUVY7PPR47RSQNQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Nonlinear infrared spectroscopy free from spectral selection","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.ins-det","quant-ph"],"primary_cat":"physics.optics","authors_text":"Anna Paterova, Dmitry Kalashnikov, Leonid Krivitsky, Shaun Lung","submitted_at":"2016-11-04T08:07:16Z","abstract_excerpt":"Infrared (IR) spectroscopy is an indispensable tool for many practical applications including material analysis and sensing. Existing IR spectroscopy techniques face challenges related to the inferior performance and the high cost of IR-grade components. Here, we develop a new method, which allows studying properties of materials in the IR range using only visible light optics and detectors. It is based on the nonlinear interference of entangled photons, generated via Spontaneous Parametric Down Conversion (SPDC). In our interferometer, the phase of the signal photon in the visible range depen"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.01283","kind":"arxiv","version":3},"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":"2026-05-18T00:48:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zsV1wCiR0K6LrG5P6MoQiagde0sRurv4eY5iCS9R1PHT0ltLXuyJPqJpTFei7wGX7E1Opp+9dCWIDTKC1gWcAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T14:48:15.336135Z"},"content_sha256":"48d47cbc010e64f387dea999746d7a78c705bbfe77ca4296d70d4cc56e39920b","schema_version":"1.0","event_id":"sha256:48d47cbc010e64f387dea999746d7a78c705bbfe77ca4296d70d4cc56e39920b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KJPWQU3EKWWNUVY7PPR47RSQNQ/bundle.json","state_url":"https://pith.science/pith/KJPWQU3EKWWNUVY7PPR47RSQNQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KJPWQU3EKWWNUVY7PPR47RSQNQ/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":"2026-05-30T14:48:15Z","links":{"resolver":"https://pith.science/pith/KJPWQU3EKWWNUVY7PPR47RSQNQ","bundle":"https://pith.science/pith/KJPWQU3EKWWNUVY7PPR47RSQNQ/bundle.json","state":"https://pith.science/pith/KJPWQU3EKWWNUVY7PPR47RSQNQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KJPWQU3EKWWNUVY7PPR47RSQNQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:KJPWQU3EKWWNUVY7PPR47RSQNQ","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":"549c2f7f7f9c7b12f2a791431de80b22dd91f207c148146da8beafad48e696f3","cross_cats_sorted":["physics.ins-det","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-11-04T08:07:16Z","title_canon_sha256":"2260f259d29f95cbb4ad7b6d9babbcc53cec01b5e56e90eb857563b684249bb1"},"schema_version":"1.0","source":{"id":"1611.01283","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.01283","created_at":"2026-05-18T00:48:59Z"},{"alias_kind":"arxiv_version","alias_value":"1611.01283v3","created_at":"2026-05-18T00:48:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.01283","created_at":"2026-05-18T00:48:59Z"},{"alias_kind":"pith_short_12","alias_value":"KJPWQU3EKWWN","created_at":"2026-05-18T12:30:25Z"},{"alias_kind":"pith_short_16","alias_value":"KJPWQU3EKWWNUVY7","created_at":"2026-05-18T12:30:25Z"},{"alias_kind":"pith_short_8","alias_value":"KJPWQU3E","created_at":"2026-05-18T12:30:25Z"}],"graph_snapshots":[{"event_id":"sha256:48d47cbc010e64f387dea999746d7a78c705bbfe77ca4296d70d4cc56e39920b","target":"graph","created_at":"2026-05-18T00:48:59Z","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":"Infrared (IR) spectroscopy is an indispensable tool for many practical applications including material analysis and sensing. Existing IR spectroscopy techniques face challenges related to the inferior performance and the high cost of IR-grade components. Here, we develop a new method, which allows studying properties of materials in the IR range using only visible light optics and detectors. It is based on the nonlinear interference of entangled photons, generated via Spontaneous Parametric Down Conversion (SPDC). In our interferometer, the phase of the signal photon in the visible range depen","authors_text":"Anna Paterova, Dmitry Kalashnikov, Leonid Krivitsky, Shaun Lung","cross_cats":["physics.ins-det","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-11-04T08:07:16Z","title":"Nonlinear infrared spectroscopy free from spectral selection"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.01283","kind":"arxiv","version":3},"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":"sha256:5f677c7ed1ab44844e1bc260e446c930cef57afc458fc06cf3bdcde93015b7e1","target":"record","created_at":"2026-05-18T00:48:59Z","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":"549c2f7f7f9c7b12f2a791431de80b22dd91f207c148146da8beafad48e696f3","cross_cats_sorted":["physics.ins-det","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-11-04T08:07:16Z","title_canon_sha256":"2260f259d29f95cbb4ad7b6d9babbcc53cec01b5e56e90eb857563b684249bb1"},"schema_version":"1.0","source":{"id":"1611.01283","kind":"arxiv","version":3}},"canonical_sha256":"525f68536455acda571f7be3cfc6506c34604039caa3493a8b72a1a3c3ee1b4d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"525f68536455acda571f7be3cfc6506c34604039caa3493a8b72a1a3c3ee1b4d","first_computed_at":"2026-05-18T00:48:59.757565Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:48:59.757565Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Umg7b8/hp65w0+f8xrCk0exkRs7GQd8c3TrL7PdzLggKZenH1uFJfLPwqkaHf3+FRYiwF2DgkGX64GvoqeMrCw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:48:59.758448Z","signed_message":"canonical_sha256_bytes"},"source_id":"1611.01283","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5f677c7ed1ab44844e1bc260e446c930cef57afc458fc06cf3bdcde93015b7e1","sha256:48d47cbc010e64f387dea999746d7a78c705bbfe77ca4296d70d4cc56e39920b"],"state_sha256":"14d20ebb336b36b341a6d334bc3b10fd60ff332b02fa017652815993ba4143f2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dCBCWZ78Jzn1S2/htKPwcXZGPBuPdB2JifiayLJ15ed/z3YNnACgABbIoZvEWs0b7i4lipw/Im6jsauCASLxDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T14:48:15.338245Z","bundle_sha256":"c2e0bf3fb002892a0ce0c707dca6a94cd784c677785204d5b7725171a43c84ee"}}