{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:A4AAMBCLNKBRZQHIR3GNLAX24Q","short_pith_number":"pith:A4AAMBCL","canonical_record":{"source":{"id":"1810.04389","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-10-10T06:46:32Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"34b22e9fbb7a3196af3c3a0a403f576976892123d3e486698f6d6ed447477e00","abstract_canon_sha256":"5aa1bcb3bb3bf6d76a4bbbec9948a6b0b698529ddc96c58de80f373e68fe1be9"},"schema_version":"1.0"},"canonical_sha256":"070006044b6a831cc0e88eccd582fae4265396f3fb6602f60c515e5f8ce7b4b9","source":{"kind":"arxiv","id":"1810.04389","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.04389","created_at":"2026-05-18T00:00:47Z"},{"alias_kind":"arxiv_version","alias_value":"1810.04389v1","created_at":"2026-05-18T00:00:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.04389","created_at":"2026-05-18T00:00:47Z"},{"alias_kind":"pith_short_12","alias_value":"A4AAMBCLNKBR","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_16","alias_value":"A4AAMBCLNKBRZQHI","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_8","alias_value":"A4AAMBCL","created_at":"2026-05-18T12:32:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:A4AAMBCLNKBRZQHIR3GNLAX24Q","target":"record","payload":{"canonical_record":{"source":{"id":"1810.04389","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-10-10T06:46:32Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"34b22e9fbb7a3196af3c3a0a403f576976892123d3e486698f6d6ed447477e00","abstract_canon_sha256":"5aa1bcb3bb3bf6d76a4bbbec9948a6b0b698529ddc96c58de80f373e68fe1be9"},"schema_version":"1.0"},"canonical_sha256":"070006044b6a831cc0e88eccd582fae4265396f3fb6602f60c515e5f8ce7b4b9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:00:47.432653Z","signature_b64":"xeOYSBp2+rwMIxWkjTXtqYpbS0w9s6MKejeJg9OMrqo+M5zWq0K3kUZwNzeJv5sehVYzf44V+noqIRR6pt23Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"070006044b6a831cc0e88eccd582fae4265396f3fb6602f60c515e5f8ce7b4b9","last_reissued_at":"2026-05-18T00:00:47.432092Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:00:47.432092Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1810.04389","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":"2026-05-18T00:00:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yscOhYkUGMzqekXI+qvq+rCf7rKkWtSHs/xHPL6Smb6HAsRmcwX01SY89OYnR5AUPSCQ/xLPzvgxsn6N2FybCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T12:41:14.102120Z"},"content_sha256":"a029592b0dfb52adcd1de203a2bf754fa45f911ceb18f7997fbeddf4dcac754d","schema_version":"1.0","event_id":"sha256:a029592b0dfb52adcd1de203a2bf754fa45f911ceb18f7997fbeddf4dcac754d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:A4AAMBCLNKBRZQHIR3GNLAX24Q","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Pulse-regulated single-photon generation via quantum interference in a $\\chi^{(2)}$ nonlinear nanocavity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"quant-ph","authors_text":"Danying Yu, Shengguo Guan, Yanbei Cheng, Yuyi Yan, Zhenglu Duan","submitted_at":"2018-10-10T06:46:32Z","abstract_excerpt":"A scalable on-chip single-photon source at telecommunications wavelengths is an essential component of quantum communication networks. In this work, we numerically construct a pulse-regulated single-photon source based on an optical parametric amplifier in a nanocavity. Under the condition of pulsed excitation, we study the photon statistics of the source using the Monte Carlo wave-function method. The results show that there exits an optimum excitation pulse width for generating high-purity single photons, while the source brightness increases monotonically with increasing excitation pulse wi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.04389","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":"2026-05-18T00:00:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rf6xTLb/+KsaAhe0MskgBt+UhcOYWlROc8VCEEnhHNRwMKO/tH1VBvgCDbirTcsGuyE/07zxSvdUaRqKQvcaBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T12:41:14.102489Z"},"content_sha256":"2346630fb502eab6de1aa6eaf1c254bf10113d03b470e251983611c3174e8c4a","schema_version":"1.0","event_id":"sha256:2346630fb502eab6de1aa6eaf1c254bf10113d03b470e251983611c3174e8c4a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/A4AAMBCLNKBRZQHIR3GNLAX24Q/bundle.json","state_url":"https://pith.science/pith/A4AAMBCLNKBRZQHIR3GNLAX24Q/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/A4AAMBCLNKBRZQHIR3GNLAX24Q/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":"2026-05-30T12:41:14Z","links":{"resolver":"https://pith.science/pith/A4AAMBCLNKBRZQHIR3GNLAX24Q","bundle":"https://pith.science/pith/A4AAMBCLNKBRZQHIR3GNLAX24Q/bundle.json","state":"https://pith.science/pith/A4AAMBCLNKBRZQHIR3GNLAX24Q/state.json","well_known_bundle":"https://pith.science/.well-known/pith/A4AAMBCLNKBRZQHIR3GNLAX24Q/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:A4AAMBCLNKBRZQHIR3GNLAX24Q","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":"5aa1bcb3bb3bf6d76a4bbbec9948a6b0b698529ddc96c58de80f373e68fe1be9","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-10-10T06:46:32Z","title_canon_sha256":"34b22e9fbb7a3196af3c3a0a403f576976892123d3e486698f6d6ed447477e00"},"schema_version":"1.0","source":{"id":"1810.04389","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.04389","created_at":"2026-05-18T00:00:47Z"},{"alias_kind":"arxiv_version","alias_value":"1810.04389v1","created_at":"2026-05-18T00:00:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.04389","created_at":"2026-05-18T00:00:47Z"},{"alias_kind":"pith_short_12","alias_value":"A4AAMBCLNKBR","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_16","alias_value":"A4AAMBCLNKBRZQHI","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_8","alias_value":"A4AAMBCL","created_at":"2026-05-18T12:32:13Z"}],"graph_snapshots":[{"event_id":"sha256:2346630fb502eab6de1aa6eaf1c254bf10113d03b470e251983611c3174e8c4a","target":"graph","created_at":"2026-05-18T00:00:47Z","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 scalable on-chip single-photon source at telecommunications wavelengths is an essential component of quantum communication networks. In this work, we numerically construct a pulse-regulated single-photon source based on an optical parametric amplifier in a nanocavity. Under the condition of pulsed excitation, we study the photon statistics of the source using the Monte Carlo wave-function method. The results show that there exits an optimum excitation pulse width for generating high-purity single photons, while the source brightness increases monotonically with increasing excitation pulse wi","authors_text":"Danying Yu, Shengguo Guan, Yanbei Cheng, Yuyi Yan, Zhenglu Duan","cross_cats":["physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-10-10T06:46:32Z","title":"Pulse-regulated single-photon generation via quantum interference in a $\\chi^{(2)}$ nonlinear nanocavity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.04389","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:a029592b0dfb52adcd1de203a2bf754fa45f911ceb18f7997fbeddf4dcac754d","target":"record","created_at":"2026-05-18T00:00:47Z","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":"5aa1bcb3bb3bf6d76a4bbbec9948a6b0b698529ddc96c58de80f373e68fe1be9","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-10-10T06:46:32Z","title_canon_sha256":"34b22e9fbb7a3196af3c3a0a403f576976892123d3e486698f6d6ed447477e00"},"schema_version":"1.0","source":{"id":"1810.04389","kind":"arxiv","version":1}},"canonical_sha256":"070006044b6a831cc0e88eccd582fae4265396f3fb6602f60c515e5f8ce7b4b9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"070006044b6a831cc0e88eccd582fae4265396f3fb6602f60c515e5f8ce7b4b9","first_computed_at":"2026-05-18T00:00:47.432092Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:00:47.432092Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xeOYSBp2+rwMIxWkjTXtqYpbS0w9s6MKejeJg9OMrqo+M5zWq0K3kUZwNzeJv5sehVYzf44V+noqIRR6pt23Ag==","signature_status":"signed_v1","signed_at":"2026-05-18T00:00:47.432653Z","signed_message":"canonical_sha256_bytes"},"source_id":"1810.04389","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a029592b0dfb52adcd1de203a2bf754fa45f911ceb18f7997fbeddf4dcac754d","sha256:2346630fb502eab6de1aa6eaf1c254bf10113d03b470e251983611c3174e8c4a"],"state_sha256":"5738b6f51813fb5a688ac1d87ac1c77df44c3166493ef1d514776e88450100be"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aJ397wZZaNqpy0841Ygt3kPO3/CG+xls6iWjoEniqLqsXhdKvGg1ukgK7zZgiPMUGwwUE0g9Dmjnom1LcIXNAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T12:41:14.105081Z","bundle_sha256":"f0e7ee85927ac99320e6222ac936fd98807d9e6b7329edb5e62832e2ed39d930"}}