{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:PXTAI2DNCSAUMN7PELJPGASG6O","short_pith_number":"pith:PXTAI2DN","canonical_record":{"source":{"id":"1604.06726","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-04-22T16:09:59Z","cross_cats_sorted":[],"title_canon_sha256":"4de17a90ac1721d718def6b6d69ae562a7ba5ce2bf15832e6b63966b3dc710a9","abstract_canon_sha256":"b1d06028e78a6475b21f1638005cadf4d32ff1421f5394b4099e2cd1f4077906"},"schema_version":"1.0"},"canonical_sha256":"7de604686d14814637ef22d2f30246f3ae10270f9588f5f202eac876f352ac11","source":{"kind":"arxiv","id":"1604.06726","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.06726","created_at":"2026-05-18T01:16:28Z"},{"alias_kind":"arxiv_version","alias_value":"1604.06726v1","created_at":"2026-05-18T01:16:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.06726","created_at":"2026-05-18T01:16:28Z"},{"alias_kind":"pith_short_12","alias_value":"PXTAI2DNCSAU","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_16","alias_value":"PXTAI2DNCSAUMN7P","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_8","alias_value":"PXTAI2DN","created_at":"2026-05-18T12:30:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:PXTAI2DNCSAUMN7PELJPGASG6O","target":"record","payload":{"canonical_record":{"source":{"id":"1604.06726","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-04-22T16:09:59Z","cross_cats_sorted":[],"title_canon_sha256":"4de17a90ac1721d718def6b6d69ae562a7ba5ce2bf15832e6b63966b3dc710a9","abstract_canon_sha256":"b1d06028e78a6475b21f1638005cadf4d32ff1421f5394b4099e2cd1f4077906"},"schema_version":"1.0"},"canonical_sha256":"7de604686d14814637ef22d2f30246f3ae10270f9588f5f202eac876f352ac11","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:16:28.346226Z","signature_b64":"u5XU2lnwqrzcbX0nO1NnPh80c35ZlrXB/AraWLTnj1+kZu/p85AqIThmgzpBsCEgYWcnjjGw9tL0XQZInzL1AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7de604686d14814637ef22d2f30246f3ae10270f9588f5f202eac876f352ac11","last_reissued_at":"2026-05-18T01:16:28.345587Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:16:28.345587Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1604.06726","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":"2026-05-18T01:16:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5McoUavxfbCfjlQsMKHBNEmzC9aZ2sKv4d4uPgClTx5fcqCRXV5EFB/UonIr9nxAoHXNv7NsK+XTQCAWrgCABA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T20:36:46.280112Z"},"content_sha256":"a3bbe77aa20e282dc57f54de4a31ee07527e3224d752867649428a9dfabea832","schema_version":"1.0","event_id":"sha256:a3bbe77aa20e282dc57f54de4a31ee07527e3224d752867649428a9dfabea832"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:PXTAI2DNCSAUMN7PELJPGASG6O","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Shot noise reduced terahertz detection via spectrally post-filtered electro-optic sampling","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Jean-Michel M\\'enard, Michael Porer, Rupert Huber","submitted_at":"2016-04-22T16:09:59Z","abstract_excerpt":"In ultrabroadband terahertz electro-optic sampling, spectral filtering of the gate pulse can strongly reduce the quantum noise while the signal level is only weakly affected. The concept is tested for phase-matched electro-optic detection of field transients centered at 45 THz with 12-fs near-infrared gate pulses in AgGaS2. Our new approach increases the experimental signal-to-noise ratio by a factor of 3 compared to standard electro-optic sampling. Under certain conditions an improvement factor larger than 5 is predicted by our theoretical analysis."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.06726","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":"2026-05-18T01:16:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"N/vm8KdNtRtxK21a1Uhaj8HOkWFCrRianUvOuZlIYaFwOd9fzg1oSK+DzWdnTG1r5hxuveIFgxNDGLD5eDIeCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T20:36:46.280467Z"},"content_sha256":"6f30a993ef9ebe883f2679e7544dde8d7e54b38535c170297d2f7dc0407089ec","schema_version":"1.0","event_id":"sha256:6f30a993ef9ebe883f2679e7544dde8d7e54b38535c170297d2f7dc0407089ec"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PXTAI2DNCSAUMN7PELJPGASG6O/bundle.json","state_url":"https://pith.science/pith/PXTAI2DNCSAUMN7PELJPGASG6O/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PXTAI2DNCSAUMN7PELJPGASG6O/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":"2026-06-01T20:36:46Z","links":{"resolver":"https://pith.science/pith/PXTAI2DNCSAUMN7PELJPGASG6O","bundle":"https://pith.science/pith/PXTAI2DNCSAUMN7PELJPGASG6O/bundle.json","state":"https://pith.science/pith/PXTAI2DNCSAUMN7PELJPGASG6O/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PXTAI2DNCSAUMN7PELJPGASG6O/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:PXTAI2DNCSAUMN7PELJPGASG6O","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":"b1d06028e78a6475b21f1638005cadf4d32ff1421f5394b4099e2cd1f4077906","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-04-22T16:09:59Z","title_canon_sha256":"4de17a90ac1721d718def6b6d69ae562a7ba5ce2bf15832e6b63966b3dc710a9"},"schema_version":"1.0","source":{"id":"1604.06726","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.06726","created_at":"2026-05-18T01:16:28Z"},{"alias_kind":"arxiv_version","alias_value":"1604.06726v1","created_at":"2026-05-18T01:16:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.06726","created_at":"2026-05-18T01:16:28Z"},{"alias_kind":"pith_short_12","alias_value":"PXTAI2DNCSAU","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_16","alias_value":"PXTAI2DNCSAUMN7P","created_at":"2026-05-18T12:30:39Z"},{"alias_kind":"pith_short_8","alias_value":"PXTAI2DN","created_at":"2026-05-18T12:30:39Z"}],"graph_snapshots":[{"event_id":"sha256:6f30a993ef9ebe883f2679e7544dde8d7e54b38535c170297d2f7dc0407089ec","target":"graph","created_at":"2026-05-18T01:16:28Z","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":"In ultrabroadband terahertz electro-optic sampling, spectral filtering of the gate pulse can strongly reduce the quantum noise while the signal level is only weakly affected. The concept is tested for phase-matched electro-optic detection of field transients centered at 45 THz with 12-fs near-infrared gate pulses in AgGaS2. Our new approach increases the experimental signal-to-noise ratio by a factor of 3 compared to standard electro-optic sampling. Under certain conditions an improvement factor larger than 5 is predicted by our theoretical analysis.","authors_text":"Jean-Michel M\\'enard, Michael Porer, Rupert Huber","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-04-22T16:09:59Z","title":"Shot noise reduced terahertz detection via spectrally post-filtered electro-optic sampling"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.06726","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:a3bbe77aa20e282dc57f54de4a31ee07527e3224d752867649428a9dfabea832","target":"record","created_at":"2026-05-18T01:16:28Z","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":"b1d06028e78a6475b21f1638005cadf4d32ff1421f5394b4099e2cd1f4077906","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-04-22T16:09:59Z","title_canon_sha256":"4de17a90ac1721d718def6b6d69ae562a7ba5ce2bf15832e6b63966b3dc710a9"},"schema_version":"1.0","source":{"id":"1604.06726","kind":"arxiv","version":1}},"canonical_sha256":"7de604686d14814637ef22d2f30246f3ae10270f9588f5f202eac876f352ac11","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7de604686d14814637ef22d2f30246f3ae10270f9588f5f202eac876f352ac11","first_computed_at":"2026-05-18T01:16:28.345587Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:16:28.345587Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"u5XU2lnwqrzcbX0nO1NnPh80c35ZlrXB/AraWLTnj1+kZu/p85AqIThmgzpBsCEgYWcnjjGw9tL0XQZInzL1AA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:16:28.346226Z","signed_message":"canonical_sha256_bytes"},"source_id":"1604.06726","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a3bbe77aa20e282dc57f54de4a31ee07527e3224d752867649428a9dfabea832","sha256:6f30a993ef9ebe883f2679e7544dde8d7e54b38535c170297d2f7dc0407089ec"],"state_sha256":"c902b20bed2e89e7861caa5a1342a7034f6c970bf0566004e8ef21db4fed24b2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"g/ElHq0o4oAHgon9mkZCGl9P052CBAMOmOjSZH1Sb/uJXpcTaMBLVZaOdgHaqq6F9J/+2rrCPfmlyW9btGrZAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T20:36:46.282284Z","bundle_sha256":"f35be1276aedc2d64478f6836251380e3ac9b94d9e00a714c3e0f4f00b05562e"}}