{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:TISNUYBNBDPRPVXKHVZUG2HJIS","short_pith_number":"pith:TISNUYBN","canonical_record":{"source":{"id":"2608.04093","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2026-08-04T18:00:03Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"b19a39b36491ffe95b4ee6b854db653dfd7fb94b96b0e5f94e80d8a716b2d5d8","abstract_canon_sha256":"67577b2596a30381ffbc844cfa85a52165d5f8e3c7f2a860a9d31c0f4d3dd6de"},"schema_version":"1.0"},"canonical_sha256":"9a24da602d08df17d6ea3d734368e944b1ae9daa33d8056f19b6f111fa0db220","source":{"kind":"arxiv","id":"2608.04093","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.04093","created_at":"2026-08-06T01:29:28Z"},{"alias_kind":"arxiv_version","alias_value":"2608.04093v1","created_at":"2026-08-06T01:29:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.04093","created_at":"2026-08-06T01:29:28Z"},{"alias_kind":"pith_short_12","alias_value":"TISNUYBNBDPR","created_at":"2026-08-06T01:29:28Z"},{"alias_kind":"pith_short_16","alias_value":"TISNUYBNBDPRPVXK","created_at":"2026-08-06T01:29:28Z"},{"alias_kind":"pith_short_8","alias_value":"TISNUYBN","created_at":"2026-08-06T01:29:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:TISNUYBNBDPRPVXKHVZUG2HJIS","target":"record","payload":{"canonical_record":{"source":{"id":"2608.04093","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2026-08-04T18:00:03Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"b19a39b36491ffe95b4ee6b854db653dfd7fb94b96b0e5f94e80d8a716b2d5d8","abstract_canon_sha256":"67577b2596a30381ffbc844cfa85a52165d5f8e3c7f2a860a9d31c0f4d3dd6de"},"schema_version":"1.0"},"canonical_sha256":"9a24da602d08df17d6ea3d734368e944b1ae9daa33d8056f19b6f111fa0db220","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-08-06T01:29:28.854838Z","signature_b64":"8UnLtnvyjosyw6NVGHMEKTi+vUBtKujVCHmVPDLLy2ts1lf+FcUw3PFGR/8VN7bocax3t4oJENxEOpNWwGNsAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9a24da602d08df17d6ea3d734368e944b1ae9daa33d8056f19b6f111fa0db220","last_reissued_at":"2026-08-06T01:29:28.853363Z","signature_status":"signed_v1","first_computed_at":"2026-08-06T01:29:28.853363Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2608.04093","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":"2026-08-06T01:29:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mQGR3a/c7Y9SwYQ40mAFmxbdZy3ZESBSkFIo5I17TtoEA4ONwTmFbZ+D97n1Tp/zBeWgGWXMJrXLp0Pd89SpAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T15:11:52.558335Z"},"content_sha256":"7a443fedae408798e5de7afbf86f6dcc53177d6f60404dfe32f4a718e6026c7e","schema_version":"1.0","event_id":"sha256:7a443fedae408798e5de7afbf86f6dcc53177d6f60404dfe32f4a718e6026c7e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:TISNUYBNBDPRPVXKHVZUG2HJIS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An optical-fibre-integrated buffer for packet-switched quantum networks","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"quant-ph","authors_text":"{\\AA}sa Claesson, Daniel Spegel-Lexne, Guilherme B. Xavier, Gustavo Lima, Joakim Argillander, Jo\\~ao M. B. Pereira, Kenny Hey Tow, Martin Clason","submitted_at":"2026-08-04T18:00:03Z","abstract_excerpt":"Packet-switched quantum networks require buffers that can delay qubit payloads while routing information is read out in real time. Previous approaches have not provided this functionality in a fully fibre-integrated architecture compatible with telecom infrastructure. Here we demonstrate an optical-fibre-integrated buffer, based on a recirculating loop and a fibre storage line, in which the storage time of a polarisation-encoded qubit payload is determined by readout of an attached packet header. The key component behind this achievement is an ultra-low-loss poled fibre phase modulator, which "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.04093","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/2608.04093/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":"2026-08-06T01:29:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1mooYmvPHDjsMNzTSqiYXsmW3TJmnFlxHcwll58xQHwjouY/YlZlhr6/lE/5AOzv/fVC+Ly2xO+EhD0Rl6moBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-13T15:11:52.558840Z"},"content_sha256":"1e5867a6d8c81a310ac384270416e30a01b1928644b016835e1b2e53f952b8b7","schema_version":"1.0","event_id":"sha256:1e5867a6d8c81a310ac384270416e30a01b1928644b016835e1b2e53f952b8b7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TISNUYBNBDPRPVXKHVZUG2HJIS/bundle.json","state_url":"https://pith.science/pith/TISNUYBNBDPRPVXKHVZUG2HJIS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TISNUYBNBDPRPVXKHVZUG2HJIS/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":"2026-08-13T15:11:52Z","links":{"resolver":"https://pith.science/pith/TISNUYBNBDPRPVXKHVZUG2HJIS","bundle":"https://pith.science/pith/TISNUYBNBDPRPVXKHVZUG2HJIS/bundle.json","state":"https://pith.science/pith/TISNUYBNBDPRPVXKHVZUG2HJIS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TISNUYBNBDPRPVXKHVZUG2HJIS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:TISNUYBNBDPRPVXKHVZUG2HJIS","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":"67577b2596a30381ffbc844cfa85a52165d5f8e3c7f2a860a9d31c0f4d3dd6de","cross_cats_sorted":["physics.optics"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2026-08-04T18:00:03Z","title_canon_sha256":"b19a39b36491ffe95b4ee6b854db653dfd7fb94b96b0e5f94e80d8a716b2d5d8"},"schema_version":"1.0","source":{"id":"2608.04093","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.04093","created_at":"2026-08-06T01:29:28Z"},{"alias_kind":"arxiv_version","alias_value":"2608.04093v1","created_at":"2026-08-06T01:29:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.04093","created_at":"2026-08-06T01:29:28Z"},{"alias_kind":"pith_short_12","alias_value":"TISNUYBNBDPR","created_at":"2026-08-06T01:29:28Z"},{"alias_kind":"pith_short_16","alias_value":"TISNUYBNBDPRPVXK","created_at":"2026-08-06T01:29:28Z"},{"alias_kind":"pith_short_8","alias_value":"TISNUYBN","created_at":"2026-08-06T01:29:28Z"}],"graph_snapshots":[{"event_id":"sha256:1e5867a6d8c81a310ac384270416e30a01b1928644b016835e1b2e53f952b8b7","target":"graph","created_at":"2026-08-06T01:29:28Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2608.04093/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Packet-switched quantum networks require buffers that can delay qubit payloads while routing information is read out in real time. Previous approaches have not provided this functionality in a fully fibre-integrated architecture compatible with telecom infrastructure. Here we demonstrate an optical-fibre-integrated buffer, based on a recirculating loop and a fibre storage line, in which the storage time of a polarisation-encoded qubit payload is determined by readout of an attached packet header. The key component behind this achievement is an ultra-low-loss poled fibre phase modulator, which ","authors_text":"{\\AA}sa Claesson, Daniel Spegel-Lexne, Guilherme B. Xavier, Gustavo Lima, Joakim Argillander, Jo\\~ao M. B. Pereira, Kenny Hey Tow, Martin Clason","cross_cats":["physics.optics"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2026-08-04T18:00:03Z","title":"An optical-fibre-integrated buffer for packet-switched quantum networks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.04093","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":"sha256:7a443fedae408798e5de7afbf86f6dcc53177d6f60404dfe32f4a718e6026c7e","target":"record","created_at":"2026-08-06T01:29:28Z","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":"67577b2596a30381ffbc844cfa85a52165d5f8e3c7f2a860a9d31c0f4d3dd6de","cross_cats_sorted":["physics.optics"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2026-08-04T18:00:03Z","title_canon_sha256":"b19a39b36491ffe95b4ee6b854db653dfd7fb94b96b0e5f94e80d8a716b2d5d8"},"schema_version":"1.0","source":{"id":"2608.04093","kind":"arxiv","version":1}},"canonical_sha256":"9a24da602d08df17d6ea3d734368e944b1ae9daa33d8056f19b6f111fa0db220","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9a24da602d08df17d6ea3d734368e944b1ae9daa33d8056f19b6f111fa0db220","first_computed_at":"2026-08-06T01:29:28.853363Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-08-06T01:29:28.853363Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8UnLtnvyjosyw6NVGHMEKTi+vUBtKujVCHmVPDLLy2ts1lf+FcUw3PFGR/8VN7bocax3t4oJENxEOpNWwGNsAw==","signature_status":"signed_v1","signed_at":"2026-08-06T01:29:28.854838Z","signed_message":"canonical_sha256_bytes"},"source_id":"2608.04093","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7a443fedae408798e5de7afbf86f6dcc53177d6f60404dfe32f4a718e6026c7e","sha256:1e5867a6d8c81a310ac384270416e30a01b1928644b016835e1b2e53f952b8b7"],"state_sha256":"177f11242f6b021e294990bae637d1e9a0a4596949fec971617aa57309155bef"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jrur/VWCgzLDBO6Ihm9OuejhHspCIPmGyoUPlk0L0eOFnyYYrNCMC/MLI6Wo8mLU0ePr6/HvKxfmLlacJEMKBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-13T15:11:52.570475Z","bundle_sha256":"563f3c052e3a904e899e0df2c88d3bbe9657cda2df3d0bc7e32dd84dd017d955"}}