{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:65IC2HUMH6C3EVYFS5EBU7J7IW","short_pith_number":"pith:65IC2HUM","canonical_record":{"source":{"id":"1803.00583","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-03-01T19:00:10Z","cross_cats_sorted":[],"title_canon_sha256":"e740549069f03e17e76cea3fd6bfd09fc400dca2d3e1b320009345cc0964f107","abstract_canon_sha256":"8cc0ff4d41df78e2e7afca98b7d465cf4dcfbeff98aa715ebc1dc04c604fc99e"},"schema_version":"1.0"},"canonical_sha256":"f7502d1e8c3f85b2570597481a7d3f45b318ffae9e40710d095d06edf9257553","source":{"kind":"arxiv","id":"1803.00583","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.00583","created_at":"2026-05-17T23:49:11Z"},{"alias_kind":"arxiv_version","alias_value":"1803.00583v1","created_at":"2026-05-17T23:49:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.00583","created_at":"2026-05-17T23:49:11Z"},{"alias_kind":"pith_short_12","alias_value":"65IC2HUMH6C3","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_16","alias_value":"65IC2HUMH6C3EVYF","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_8","alias_value":"65IC2HUM","created_at":"2026-05-18T12:32:08Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:65IC2HUMH6C3EVYFS5EBU7J7IW","target":"record","payload":{"canonical_record":{"source":{"id":"1803.00583","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-03-01T19:00:10Z","cross_cats_sorted":[],"title_canon_sha256":"e740549069f03e17e76cea3fd6bfd09fc400dca2d3e1b320009345cc0964f107","abstract_canon_sha256":"8cc0ff4d41df78e2e7afca98b7d465cf4dcfbeff98aa715ebc1dc04c604fc99e"},"schema_version":"1.0"},"canonical_sha256":"f7502d1e8c3f85b2570597481a7d3f45b318ffae9e40710d095d06edf9257553","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:49:11.861503Z","signature_b64":"0E9UMxlPVXtwde4oGCW0Z8NvHMNo57VHvAi7sIzFcc0cmXWCXmah8NUg7X9Z+XoRupl9KpchLCuj8esDP7TNCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f7502d1e8c3f85b2570597481a7d3f45b318ffae9e40710d095d06edf9257553","last_reissued_at":"2026-05-17T23:49:11.860871Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:49:11.860871Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1803.00583","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":"2026-05-17T23:49:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"o3vqE1JUhNFgOBRs6zzSppdR2LDVfZG9J1hQs06y+NOiPbsJppqnTfFm/GUOCErUUC3AFvghHu6UtoqrUAlkAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T21:55:17.619653Z"},"content_sha256":"313de7c0b3cb17da010f4e41cbf28ed5495bd614bfe14df5dfcd447ed315c60c","schema_version":"1.0","event_id":"sha256:313de7c0b3cb17da010f4e41cbf28ed5495bd614bfe14df5dfcd447ed315c60c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:65IC2HUMH6C3EVYFS5EBU7J7IW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"In-field entanglement distribution over a 96 km-long submarine optical fibre","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Alberto Mura, Andr\\'e Xuereb, Anton Zeilinger, Davide Calonico, Fabian Steinlechner, Hannes H\\\"ubel, Johannes W. N. Los, Julien R. Zichi, Marijn A. M. Versteegh, Massimo Inguscio, Ren\\'e van der Molen, Rupert Ursin, Sergiy. M. Dobrovolskiy, Siddarth Koduru Joshi, S\\\"oren Wengerowsky, Val Zwiller","submitted_at":"2018-03-01T19:00:10Z","abstract_excerpt":"Techniques for the distribution of quantum-secured cryptographic keys have reached a level of maturity allowing them to be implemented in all kinds of environments, away from any form of laboratory infrastructure. Here, we detail the distribution of entanglement between Malta and Sicily over a 96 km-long submarine telecommunications optical fibre cable. We used this standard telecommunications fibre as a quantum channel to distribute polarisation-entangled photons and were able to observe around 257 photon pairs per second, with a polarisation visibility above 90%. Our experiment demonstrates "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.00583","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":"2026-05-17T23:49:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/HSzZlsGhZKZ7PEyTTXbf9QF44M4Ww6LHzkdmnOMdtAsuw3lDk95iOeOUrBxb3LX0GQCVvkY0DqPnbfmsa+JAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T21:55:17.620354Z"},"content_sha256":"66ed0d2be0403fe5b1209e7cf21acfe1c7022b45bdc8198a2b24163beddd3d45","schema_version":"1.0","event_id":"sha256:66ed0d2be0403fe5b1209e7cf21acfe1c7022b45bdc8198a2b24163beddd3d45"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/65IC2HUMH6C3EVYFS5EBU7J7IW/bundle.json","state_url":"https://pith.science/pith/65IC2HUMH6C3EVYFS5EBU7J7IW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/65IC2HUMH6C3EVYFS5EBU7J7IW/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":"2026-05-27T21:55:17Z","links":{"resolver":"https://pith.science/pith/65IC2HUMH6C3EVYFS5EBU7J7IW","bundle":"https://pith.science/pith/65IC2HUMH6C3EVYFS5EBU7J7IW/bundle.json","state":"https://pith.science/pith/65IC2HUMH6C3EVYFS5EBU7J7IW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/65IC2HUMH6C3EVYFS5EBU7J7IW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:65IC2HUMH6C3EVYFS5EBU7J7IW","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":"8cc0ff4d41df78e2e7afca98b7d465cf4dcfbeff98aa715ebc1dc04c604fc99e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-03-01T19:00:10Z","title_canon_sha256":"e740549069f03e17e76cea3fd6bfd09fc400dca2d3e1b320009345cc0964f107"},"schema_version":"1.0","source":{"id":"1803.00583","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.00583","created_at":"2026-05-17T23:49:11Z"},{"alias_kind":"arxiv_version","alias_value":"1803.00583v1","created_at":"2026-05-17T23:49:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.00583","created_at":"2026-05-17T23:49:11Z"},{"alias_kind":"pith_short_12","alias_value":"65IC2HUMH6C3","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_16","alias_value":"65IC2HUMH6C3EVYF","created_at":"2026-05-18T12:32:08Z"},{"alias_kind":"pith_short_8","alias_value":"65IC2HUM","created_at":"2026-05-18T12:32:08Z"}],"graph_snapshots":[{"event_id":"sha256:66ed0d2be0403fe5b1209e7cf21acfe1c7022b45bdc8198a2b24163beddd3d45","target":"graph","created_at":"2026-05-17T23:49:11Z","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":"Techniques for the distribution of quantum-secured cryptographic keys have reached a level of maturity allowing them to be implemented in all kinds of environments, away from any form of laboratory infrastructure. Here, we detail the distribution of entanglement between Malta and Sicily over a 96 km-long submarine telecommunications optical fibre cable. We used this standard telecommunications fibre as a quantum channel to distribute polarisation-entangled photons and were able to observe around 257 photon pairs per second, with a polarisation visibility above 90%. Our experiment demonstrates ","authors_text":"Alberto Mura, Andr\\'e Xuereb, Anton Zeilinger, Davide Calonico, Fabian Steinlechner, Hannes H\\\"ubel, Johannes W. N. Los, Julien R. Zichi, Marijn A. M. Versteegh, Massimo Inguscio, Ren\\'e van der Molen, Rupert Ursin, Sergiy. M. Dobrovolskiy, Siddarth Koduru Joshi, S\\\"oren Wengerowsky, Val Zwiller","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-03-01T19:00:10Z","title":"In-field entanglement distribution over a 96 km-long submarine optical fibre"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.00583","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":"sha256:313de7c0b3cb17da010f4e41cbf28ed5495bd614bfe14df5dfcd447ed315c60c","target":"record","created_at":"2026-05-17T23:49:11Z","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":"8cc0ff4d41df78e2e7afca98b7d465cf4dcfbeff98aa715ebc1dc04c604fc99e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-03-01T19:00:10Z","title_canon_sha256":"e740549069f03e17e76cea3fd6bfd09fc400dca2d3e1b320009345cc0964f107"},"schema_version":"1.0","source":{"id":"1803.00583","kind":"arxiv","version":1}},"canonical_sha256":"f7502d1e8c3f85b2570597481a7d3f45b318ffae9e40710d095d06edf9257553","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f7502d1e8c3f85b2570597481a7d3f45b318ffae9e40710d095d06edf9257553","first_computed_at":"2026-05-17T23:49:11.860871Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:49:11.860871Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0E9UMxlPVXtwde4oGCW0Z8NvHMNo57VHvAi7sIzFcc0cmXWCXmah8NUg7X9Z+XoRupl9KpchLCuj8esDP7TNCQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:49:11.861503Z","signed_message":"canonical_sha256_bytes"},"source_id":"1803.00583","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:313de7c0b3cb17da010f4e41cbf28ed5495bd614bfe14df5dfcd447ed315c60c","sha256:66ed0d2be0403fe5b1209e7cf21acfe1c7022b45bdc8198a2b24163beddd3d45"],"state_sha256":"4345aaad78beb26237f4bf4d2e6f5559544551189f0cdbbd2929e650d16d72ca"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cvpwYh3FILedAIfyQpPkvdbHIQOneupGGobQp+1li4iL9Z4g8MWbKr4eseq0fTC44ZmtVzy2M52M2/T9TMZlAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T21:55:17.623623Z","bundle_sha256":"3d9fb05918c5bed1d9158c84aef2d73f4f7452b00ebb9e4def6f7a9b8df71da1"}}