{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:MX2Y5JQLE5UL26ZBJLMMNX72CZ","short_pith_number":"pith:MX2Y5JQL","canonical_record":{"source":{"id":"2508.15886","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-08-21T18:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"b9c40fdc53a93ad5edc4a36d223a4065b5df8bba06c260388e5583a4c190b0b2","abstract_canon_sha256":"7fbf935ec8c9d3ef16dfc776d1fba3e2fa10159d5b9e7273305fd850480c5923"},"schema_version":"1.0"},"canonical_sha256":"65f58ea60b2768bd7b214ad8c6dffa167305159933e8e66ff6af0e881a62aea8","source":{"kind":"arxiv","id":"2508.15886","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2508.15886","created_at":"2026-07-05T11:57:22Z"},{"alias_kind":"arxiv_version","alias_value":"2508.15886v1","created_at":"2026-07-05T11:57:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2508.15886","created_at":"2026-07-05T11:57:22Z"},{"alias_kind":"pith_short_12","alias_value":"MX2Y5JQLE5UL","created_at":"2026-07-05T11:57:22Z"},{"alias_kind":"pith_short_16","alias_value":"MX2Y5JQLE5UL26ZB","created_at":"2026-07-05T11:57:22Z"},{"alias_kind":"pith_short_8","alias_value":"MX2Y5JQL","created_at":"2026-07-05T11:57:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:MX2Y5JQLE5UL26ZBJLMMNX72CZ","target":"record","payload":{"canonical_record":{"source":{"id":"2508.15886","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-08-21T18:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"b9c40fdc53a93ad5edc4a36d223a4065b5df8bba06c260388e5583a4c190b0b2","abstract_canon_sha256":"7fbf935ec8c9d3ef16dfc776d1fba3e2fa10159d5b9e7273305fd850480c5923"},"schema_version":"1.0"},"canonical_sha256":"65f58ea60b2768bd7b214ad8c6dffa167305159933e8e66ff6af0e881a62aea8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:57:22.473630Z","signature_b64":"w+GJGw2BvjKwbcm0qFcItg3vtwfwfzKKo5M22kNH6OfNJEclZHUX2Erd255UP+SIeOZXKDGspzFXV/ydtEmzAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"65f58ea60b2768bd7b214ad8c6dffa167305159933e8e66ff6af0e881a62aea8","last_reissued_at":"2026-07-05T11:57:22.473199Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:57:22.473199Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2508.15886","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":"2026-07-05T11:57:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8XuZXqlGHWQ+w3IR1Ek0S//ogZrLD0z5R3jVi/IXh2dVH/nP857mvVtzQBVzRxBGX2JzVsOvbgoK+9y1aD37Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T10:29:05.787256Z"},"content_sha256":"e5013e56412db130992e1bea2b272b29c3cb31a0a26856173157821ecbfa74df","schema_version":"1.0","event_id":"sha256:e5013e56412db130992e1bea2b272b29c3cb31a0a26856173157821ecbfa74df"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:MX2Y5JQLE5UL26ZBJLMMNX72CZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Broadband spectral manipulation of single photons using cross-phase modulation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Benjamin J. Sussman, Duncan England, Fr\\'ed\\'eric Bouchard, Guillaume Thekkadath, Kate L. Fenwick, Philip J. Bustard","submitted_at":"2025-08-21T18:00:00Z","abstract_excerpt":"Manipulating the frequency and bandwidth of light is crucial in classical and quantum applications including communication, spectroscopy, imaging, and signal processing. Such capabilities also offer potential for interfacing disparate quantum systems in quantum networking and for quantum information processing. We experimentally demonstrate deterministic, broadband frequency control of heralded telecom-band single photons via cross-phase modulation in a short length of single-mode fiber. An intense, ultrafast pump pulse imposes a transient, intensity-dependent refractive-index gradient which i"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2508.15886","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2508.15886/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T11:57:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vDGjY3+sgoEe2Dd5Jpe0zsFgYGfCytM6YWbYNtMfC1HRS+Uldsm6Kzzk0TtpsSHdfdlVBv325X3ofnGwHRXeAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T10:29:05.787769Z"},"content_sha256":"c24c745238165ea24108c9ac5d3b501cdd32fcc412e090de4d8bf811d4bdc1cb","schema_version":"1.0","event_id":"sha256:c24c745238165ea24108c9ac5d3b501cdd32fcc412e090de4d8bf811d4bdc1cb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MX2Y5JQLE5UL26ZBJLMMNX72CZ/bundle.json","state_url":"https://pith.science/pith/MX2Y5JQLE5UL26ZBJLMMNX72CZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MX2Y5JQLE5UL26ZBJLMMNX72CZ/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":"2026-08-21T10:29:05Z","links":{"resolver":"https://pith.science/pith/MX2Y5JQLE5UL26ZBJLMMNX72CZ","bundle":"https://pith.science/pith/MX2Y5JQLE5UL26ZBJLMMNX72CZ/bundle.json","state":"https://pith.science/pith/MX2Y5JQLE5UL26ZBJLMMNX72CZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MX2Y5JQLE5UL26ZBJLMMNX72CZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:MX2Y5JQLE5UL26ZBJLMMNX72CZ","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":"7fbf935ec8c9d3ef16dfc776d1fba3e2fa10159d5b9e7273305fd850480c5923","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-08-21T18:00:00Z","title_canon_sha256":"b9c40fdc53a93ad5edc4a36d223a4065b5df8bba06c260388e5583a4c190b0b2"},"schema_version":"1.0","source":{"id":"2508.15886","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2508.15886","created_at":"2026-07-05T11:57:22Z"},{"alias_kind":"arxiv_version","alias_value":"2508.15886v1","created_at":"2026-07-05T11:57:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2508.15886","created_at":"2026-07-05T11:57:22Z"},{"alias_kind":"pith_short_12","alias_value":"MX2Y5JQLE5UL","created_at":"2026-07-05T11:57:22Z"},{"alias_kind":"pith_short_16","alias_value":"MX2Y5JQLE5UL26ZB","created_at":"2026-07-05T11:57:22Z"},{"alias_kind":"pith_short_8","alias_value":"MX2Y5JQL","created_at":"2026-07-05T11:57:22Z"}],"graph_snapshots":[{"event_id":"sha256:c24c745238165ea24108c9ac5d3b501cdd32fcc412e090de4d8bf811d4bdc1cb","target":"graph","created_at":"2026-07-05T11:57:22Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2508.15886/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Manipulating the frequency and bandwidth of light is crucial in classical and quantum applications including communication, spectroscopy, imaging, and signal processing. Such capabilities also offer potential for interfacing disparate quantum systems in quantum networking and for quantum information processing. We experimentally demonstrate deterministic, broadband frequency control of heralded telecom-band single photons via cross-phase modulation in a short length of single-mode fiber. An intense, ultrafast pump pulse imposes a transient, intensity-dependent refractive-index gradient which i","authors_text":"Benjamin J. Sussman, Duncan England, Fr\\'ed\\'eric Bouchard, Guillaume Thekkadath, Kate L. Fenwick, Philip J. Bustard","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-08-21T18:00:00Z","title":"Broadband spectral manipulation of single photons using cross-phase modulation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2508.15886","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:e5013e56412db130992e1bea2b272b29c3cb31a0a26856173157821ecbfa74df","target":"record","created_at":"2026-07-05T11:57:22Z","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":"7fbf935ec8c9d3ef16dfc776d1fba3e2fa10159d5b9e7273305fd850480c5923","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-08-21T18:00:00Z","title_canon_sha256":"b9c40fdc53a93ad5edc4a36d223a4065b5df8bba06c260388e5583a4c190b0b2"},"schema_version":"1.0","source":{"id":"2508.15886","kind":"arxiv","version":1}},"canonical_sha256":"65f58ea60b2768bd7b214ad8c6dffa167305159933e8e66ff6af0e881a62aea8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"65f58ea60b2768bd7b214ad8c6dffa167305159933e8e66ff6af0e881a62aea8","first_computed_at":"2026-07-05T11:57:22.473199Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:57:22.473199Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"w+GJGw2BvjKwbcm0qFcItg3vtwfwfzKKo5M22kNH6OfNJEclZHUX2Erd255UP+SIeOZXKDGspzFXV/ydtEmzAw==","signature_status":"signed_v1","signed_at":"2026-07-05T11:57:22.473630Z","signed_message":"canonical_sha256_bytes"},"source_id":"2508.15886","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e5013e56412db130992e1bea2b272b29c3cb31a0a26856173157821ecbfa74df","sha256:c24c745238165ea24108c9ac5d3b501cdd32fcc412e090de4d8bf811d4bdc1cb"],"state_sha256":"8dc68271965f15e870b75e27417dccbccf01e096707529612c46d693435e1617"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"om1Z0dfKIJu7EkLwRKSi6lS7U54anlWAq0V4Hi6iXrx7n6KTMuf2RBYuy3Vd/EQSygkuGyA7eKOByhsqUMu9BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-21T10:29:05.792102Z","bundle_sha256":"0a9ef1e448d5176bb7a84885ee288fcf1093ae7516d22f2fb0b67a409fbf6bce"}}