{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:DQZNVGOW3O3EFNVLW2ESRTD7UC","short_pith_number":"pith:DQZNVGOW","canonical_record":{"source":{"id":"1609.00521","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-09-02T09:37:16Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"28e88a66f44c239f5c0936bed02d9635a67bce1e57bacd39cbb9b53c81003af3","abstract_canon_sha256":"00ea044be09bde9a6aa27bce2c88c2afdb0740e281c572ae23fc256378eea576"},"schema_version":"1.0"},"canonical_sha256":"1c32da99d6dbb642b6abb68928cc7fa086efb05c14b4c3f8299a8be88d9af8a4","source":{"kind":"arxiv","id":"1609.00521","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.00521","created_at":"2026-05-18T00:51:07Z"},{"alias_kind":"arxiv_version","alias_value":"1609.00521v2","created_at":"2026-05-18T00:51:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.00521","created_at":"2026-05-18T00:51:07Z"},{"alias_kind":"pith_short_12","alias_value":"DQZNVGOW3O3E","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_16","alias_value":"DQZNVGOW3O3EFNVL","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_8","alias_value":"DQZNVGOW","created_at":"2026-05-18T12:30:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:DQZNVGOW3O3EFNVLW2ESRTD7UC","target":"record","payload":{"canonical_record":{"source":{"id":"1609.00521","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-09-02T09:37:16Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"28e88a66f44c239f5c0936bed02d9635a67bce1e57bacd39cbb9b53c81003af3","abstract_canon_sha256":"00ea044be09bde9a6aa27bce2c88c2afdb0740e281c572ae23fc256378eea576"},"schema_version":"1.0"},"canonical_sha256":"1c32da99d6dbb642b6abb68928cc7fa086efb05c14b4c3f8299a8be88d9af8a4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:51:07.115799Z","signature_b64":"A3LBACeAiNzGM4FfabOUjuc9VKAM1LSMGfwfpw5Z1gSpTAVGV/wj97upJSo7ipY1eeTVauSHObUkDCJ43dDpBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1c32da99d6dbb642b6abb68928cc7fa086efb05c14b4c3f8299a8be88d9af8a4","last_reissued_at":"2026-05-18T00:51:07.115295Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:51:07.115295Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1609.00521","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:51:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+hf4idlFn6anOCoEJRpHnLjignzQ2knMu76Oim1EI2yTGp0EUKWiWdc2K/W2BlafRjIhs7nLM+PuB849rNuTDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T20:51:36.540180Z"},"content_sha256":"af727188c07fcdc705590a69ed710bbd7d82e9ad9308ed18922e84144c8f3674","schema_version":"1.0","event_id":"sha256:af727188c07fcdc705590a69ed710bbd7d82e9ad9308ed18922e84144c8f3674"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:DQZNVGOW3O3EFNVLW2ESRTD7UC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"High-quality photonic entanglement for wavelength-multiplexed quantum communication based on a silicon chip","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"quant-ph","authors_text":"Carlos Alonso Ramos, Delphine Marris-Morini, Djeylan Aktas, \\'Eric Cassan, \\'Eric Picholle, Florent Mazeas, Florian Kaiser, Gr\\'egory Sauder, Laurent Labont\\'e, Laurent Vivien, Lutfi-Arif Bin-Ngah, Marco Bentivegna, Michele Traetta, Nadia Belabas-Plougonven, S\\'ebastien Tanzilli, Tommaso Lunghi, Weiwei Zhang, Xavier Le Roux","submitted_at":"2016-09-02T09:37:16Z","abstract_excerpt":"We report an efficient energy-time entangled photon-pair source based on four-wave mixing in a CMOS-compatible silicon photonics ring resonator. Thanks to suitable optimization, the source shows a large spectral brightness of 400\\,pairs of entangled photons /s/MHz for $\\rm 500\\,\\mu W$ pump power. Additionally, the resonator has been engineered so as to generate a frequency comb structure compatible with standard telecom dense wavelength division multiplexers. We demonstrate high-purity energy-time entanglement, i.e., free of photonic noise, with near perfect raw visibilities ($>$~98\\%) between"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.00521","kind":"arxiv","version":2},"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":"2026-05-18T00:51:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"d5RojM5t1EsbBh4uUMVIovgXM8eriZkEOrWT7ljumYfPYKmV3eRVb27PTbyMECbGSOpmmB4MTtO1+80h3oWrAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T20:51:36.540591Z"},"content_sha256":"a5ab6f5e8be8a8848acbbb8fe42a0184b2e6858c0dbeb1ff699d684298027482","schema_version":"1.0","event_id":"sha256:a5ab6f5e8be8a8848acbbb8fe42a0184b2e6858c0dbeb1ff699d684298027482"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DQZNVGOW3O3EFNVLW2ESRTD7UC/bundle.json","state_url":"https://pith.science/pith/DQZNVGOW3O3EFNVLW2ESRTD7UC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DQZNVGOW3O3EFNVLW2ESRTD7UC/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":"2026-05-28T20:51:36Z","links":{"resolver":"https://pith.science/pith/DQZNVGOW3O3EFNVLW2ESRTD7UC","bundle":"https://pith.science/pith/DQZNVGOW3O3EFNVLW2ESRTD7UC/bundle.json","state":"https://pith.science/pith/DQZNVGOW3O3EFNVLW2ESRTD7UC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DQZNVGOW3O3EFNVLW2ESRTD7UC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:DQZNVGOW3O3EFNVLW2ESRTD7UC","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":"00ea044be09bde9a6aa27bce2c88c2afdb0740e281c572ae23fc256378eea576","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-09-02T09:37:16Z","title_canon_sha256":"28e88a66f44c239f5c0936bed02d9635a67bce1e57bacd39cbb9b53c81003af3"},"schema_version":"1.0","source":{"id":"1609.00521","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.00521","created_at":"2026-05-18T00:51:07Z"},{"alias_kind":"arxiv_version","alias_value":"1609.00521v2","created_at":"2026-05-18T00:51:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.00521","created_at":"2026-05-18T00:51:07Z"},{"alias_kind":"pith_short_12","alias_value":"DQZNVGOW3O3E","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_16","alias_value":"DQZNVGOW3O3EFNVL","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_8","alias_value":"DQZNVGOW","created_at":"2026-05-18T12:30:12Z"}],"graph_snapshots":[{"event_id":"sha256:a5ab6f5e8be8a8848acbbb8fe42a0184b2e6858c0dbeb1ff699d684298027482","target":"graph","created_at":"2026-05-18T00:51:07Z","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 report an efficient energy-time entangled photon-pair source based on four-wave mixing in a CMOS-compatible silicon photonics ring resonator. Thanks to suitable optimization, the source shows a large spectral brightness of 400\\,pairs of entangled photons /s/MHz for $\\rm 500\\,\\mu W$ pump power. Additionally, the resonator has been engineered so as to generate a frequency comb structure compatible with standard telecom dense wavelength division multiplexers. We demonstrate high-purity energy-time entanglement, i.e., free of photonic noise, with near perfect raw visibilities ($>$~98\\%) between","authors_text":"Carlos Alonso Ramos, Delphine Marris-Morini, Djeylan Aktas, \\'Eric Cassan, \\'Eric Picholle, Florent Mazeas, Florian Kaiser, Gr\\'egory Sauder, Laurent Labont\\'e, Laurent Vivien, Lutfi-Arif Bin-Ngah, Marco Bentivegna, Michele Traetta, Nadia Belabas-Plougonven, S\\'ebastien Tanzilli, Tommaso Lunghi, Weiwei Zhang, Xavier Le Roux","cross_cats":["physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-09-02T09:37:16Z","title":"High-quality photonic entanglement for wavelength-multiplexed quantum communication based on a silicon chip"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.00521","kind":"arxiv","version":2},"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:af727188c07fcdc705590a69ed710bbd7d82e9ad9308ed18922e84144c8f3674","target":"record","created_at":"2026-05-18T00:51:07Z","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":"00ea044be09bde9a6aa27bce2c88c2afdb0740e281c572ae23fc256378eea576","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-09-02T09:37:16Z","title_canon_sha256":"28e88a66f44c239f5c0936bed02d9635a67bce1e57bacd39cbb9b53c81003af3"},"schema_version":"1.0","source":{"id":"1609.00521","kind":"arxiv","version":2}},"canonical_sha256":"1c32da99d6dbb642b6abb68928cc7fa086efb05c14b4c3f8299a8be88d9af8a4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1c32da99d6dbb642b6abb68928cc7fa086efb05c14b4c3f8299a8be88d9af8a4","first_computed_at":"2026-05-18T00:51:07.115295Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:51:07.115295Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"A3LBACeAiNzGM4FfabOUjuc9VKAM1LSMGfwfpw5Z1gSpTAVGV/wj97upJSo7ipY1eeTVauSHObUkDCJ43dDpBA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:51:07.115799Z","signed_message":"canonical_sha256_bytes"},"source_id":"1609.00521","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:af727188c07fcdc705590a69ed710bbd7d82e9ad9308ed18922e84144c8f3674","sha256:a5ab6f5e8be8a8848acbbb8fe42a0184b2e6858c0dbeb1ff699d684298027482"],"state_sha256":"b3f9a06dbc3683282edb2cb18418d6cb7da515e977509d803736efc7e980cbb7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qEmYER1niTXtvodqtH55/3kzPoi6/oWMbzzV8W8yjs1gkVMEyg6+e4GJOjWNPDjrgH6P0SoYx0azzsjk8lUVAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T20:51:36.544212Z","bundle_sha256":"f19b9d2a0d56317bf1a4e20dedf1c8686800ef6fac0c4c80cc473993ff8c88c2"}}