{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:MFBX6YM7UO7NKGRVLJGGQ6RNGV","short_pith_number":"pith:MFBX6YM7","canonical_record":{"source":{"id":"2605.15929","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2026-05-15T13:12:00Z","cross_cats_sorted":[],"title_canon_sha256":"8fe4ba91c0551d5765aec358063f29345ce9dec6f75d85ce3977a2792f878428","abstract_canon_sha256":"b93d712afbb718e0cb3588547681230b79805758cc164af56be81acfb9ffd5c9"},"schema_version":"1.0"},"canonical_sha256":"61437f619fa3bed51a355a4c687a2d35777c0581d7315636b6ceb82831a77d91","source":{"kind":"arxiv","id":"2605.15929","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.15929","created_at":"2026-05-20T00:01:45Z"},{"alias_kind":"arxiv_version","alias_value":"2605.15929v1","created_at":"2026-05-20T00:01:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.15929","created_at":"2026-05-20T00:01:45Z"},{"alias_kind":"pith_short_12","alias_value":"MFBX6YM7UO7N","created_at":"2026-05-20T00:01:45Z"},{"alias_kind":"pith_short_16","alias_value":"MFBX6YM7UO7NKGRV","created_at":"2026-05-20T00:01:45Z"},{"alias_kind":"pith_short_8","alias_value":"MFBX6YM7","created_at":"2026-05-20T00:01:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:MFBX6YM7UO7NKGRVLJGGQ6RNGV","target":"record","payload":{"canonical_record":{"source":{"id":"2605.15929","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2026-05-15T13:12:00Z","cross_cats_sorted":[],"title_canon_sha256":"8fe4ba91c0551d5765aec358063f29345ce9dec6f75d85ce3977a2792f878428","abstract_canon_sha256":"b93d712afbb718e0cb3588547681230b79805758cc164af56be81acfb9ffd5c9"},"schema_version":"1.0"},"canonical_sha256":"61437f619fa3bed51a355a4c687a2d35777c0581d7315636b6ceb82831a77d91","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-20T00:01:45.511759Z","signature_b64":"cIc0ZA6iz9DxyvoHNg3lAHUu3QeL2ySAYdSaBsiTXJgged1l3uF7oL7NvYYTdLbU5wWpI1tuyMnhq3nyqNb4CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"61437f619fa3bed51a355a4c687a2d35777c0581d7315636b6ceb82831a77d91","last_reissued_at":"2026-05-20T00:01:45.511089Z","signature_status":"signed_v1","first_computed_at":"2026-05-20T00:01:45.511089Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2605.15929","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":"2026-05-20T00:01:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rGoSrWo9J7dKtxudTqsmTB0tQT2X4B8hWZFkOGvCILmvWmcLBbj39DuvnJ8JbkJThoOKWoKw8VOqjLzrXU7ADg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T23:47:52.706380Z"},"content_sha256":"9220d4bbb012cac0d0b1c9a6ebc4d69cc12c4b5334077d4bb62d11d63ef5ee63","schema_version":"1.0","event_id":"sha256:9220d4bbb012cac0d0b1c9a6ebc4d69cc12c4b5334077d4bb62d11d63ef5ee63"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:MFBX6YM7UO7NKGRVLJGGQ6RNGV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Experimental subdiffraction source discrimination enabled by spatial demultiplexing and single-photon detectors","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Cosmo Lupo, Danilo Triggiani, Luigi Santamaria Amato","submitted_at":"2026-05-15T13:12:00Z","abstract_excerpt":"We experimentally demonstrate a universal, parameter-independent test for asymmetric source discrimination. The test allows us to discriminate faint sources well beyond the diffraction limit by exploiting spatial mode demultiplexing (SPADE) and single-photon detectors. Our test yields a rate of false negatives well below what can be achieved by diffraction-limited direct imaging. Our tabletop experimental setup is inspired by the problem of exoplanet detection, where one aims at detecting the presence of a faint source in the proximity of a brighter one. We present a complete theory, modelling"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.15929","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/2605.15929/integrity.json","findings":[],"available":true,"detectors_run":[{"name":"ai_meta_artifact","ran_at":"2026-05-19T17:33:46.544891Z","status":"skipped","version":"1.0.0","findings_count":0},{"name":"claim_evidence","ran_at":"2026-05-19T17:01:55.741017Z","status":"completed","version":"1.0.0","findings_count":0}],"snapshot_sha256":"032a8d1a1ab0365a52579c907bb4ad9bc2a6056c75b3247f2cbd6553ee841a0d"},"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":"2026-05-20T00:01:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qWfDA118cMs7/kc27bBMIUoy2rbhtsHZ38ypk8ZArw+qi+Vmmvh7FSO7GKC3eatiBqZykkuejwKnn4h4LZu/Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T23:47:52.706786Z"},"content_sha256":"0db82fd34b9bc770ab5badf27f08e8b5887abd1b6bf6ccc6d8f1764a7f78024d","schema_version":"1.0","event_id":"sha256:0db82fd34b9bc770ab5badf27f08e8b5887abd1b6bf6ccc6d8f1764a7f78024d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MFBX6YM7UO7NKGRVLJGGQ6RNGV/bundle.json","state_url":"https://pith.science/pith/MFBX6YM7UO7NKGRVLJGGQ6RNGV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MFBX6YM7UO7NKGRVLJGGQ6RNGV/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":"2026-06-01T23:47:52Z","links":{"resolver":"https://pith.science/pith/MFBX6YM7UO7NKGRVLJGGQ6RNGV","bundle":"https://pith.science/pith/MFBX6YM7UO7NKGRVLJGGQ6RNGV/bundle.json","state":"https://pith.science/pith/MFBX6YM7UO7NKGRVLJGGQ6RNGV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MFBX6YM7UO7NKGRVLJGGQ6RNGV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:MFBX6YM7UO7NKGRVLJGGQ6RNGV","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":"b93d712afbb718e0cb3588547681230b79805758cc164af56be81acfb9ffd5c9","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2026-05-15T13:12:00Z","title_canon_sha256":"8fe4ba91c0551d5765aec358063f29345ce9dec6f75d85ce3977a2792f878428"},"schema_version":"1.0","source":{"id":"2605.15929","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.15929","created_at":"2026-05-20T00:01:45Z"},{"alias_kind":"arxiv_version","alias_value":"2605.15929v1","created_at":"2026-05-20T00:01:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.15929","created_at":"2026-05-20T00:01:45Z"},{"alias_kind":"pith_short_12","alias_value":"MFBX6YM7UO7N","created_at":"2026-05-20T00:01:45Z"},{"alias_kind":"pith_short_16","alias_value":"MFBX6YM7UO7NKGRV","created_at":"2026-05-20T00:01:45Z"},{"alias_kind":"pith_short_8","alias_value":"MFBX6YM7","created_at":"2026-05-20T00:01:45Z"}],"graph_snapshots":[{"event_id":"sha256:0db82fd34b9bc770ab5badf27f08e8b5887abd1b6bf6ccc6d8f1764a7f78024d","target":"graph","created_at":"2026-05-20T00:01:45Z","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":[{"findings_count":0,"name":"ai_meta_artifact","ran_at":"2026-05-19T17:33:46.544891Z","status":"skipped","version":"1.0.0"},{"findings_count":0,"name":"claim_evidence","ran_at":"2026-05-19T17:01:55.741017Z","status":"completed","version":"1.0.0"}],"endpoint":"/pith/2605.15929/integrity.json","findings":[],"snapshot_sha256":"032a8d1a1ab0365a52579c907bb4ad9bc2a6056c75b3247f2cbd6553ee841a0d","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We experimentally demonstrate a universal, parameter-independent test for asymmetric source discrimination. The test allows us to discriminate faint sources well beyond the diffraction limit by exploiting spatial mode demultiplexing (SPADE) and single-photon detectors. Our test yields a rate of false negatives well below what can be achieved by diffraction-limited direct imaging. Our tabletop experimental setup is inspired by the problem of exoplanet detection, where one aims at detecting the presence of a faint source in the proximity of a brighter one. We present a complete theory, modelling","authors_text":"Cosmo Lupo, Danilo Triggiani, Luigi Santamaria Amato","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2026-05-15T13:12:00Z","title":"Experimental subdiffraction source discrimination enabled by spatial demultiplexing and single-photon detectors"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.15929","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":"sha256:9220d4bbb012cac0d0b1c9a6ebc4d69cc12c4b5334077d4bb62d11d63ef5ee63","target":"record","created_at":"2026-05-20T00:01:45Z","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":"b93d712afbb718e0cb3588547681230b79805758cc164af56be81acfb9ffd5c9","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2026-05-15T13:12:00Z","title_canon_sha256":"8fe4ba91c0551d5765aec358063f29345ce9dec6f75d85ce3977a2792f878428"},"schema_version":"1.0","source":{"id":"2605.15929","kind":"arxiv","version":1}},"canonical_sha256":"61437f619fa3bed51a355a4c687a2d35777c0581d7315636b6ceb82831a77d91","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"61437f619fa3bed51a355a4c687a2d35777c0581d7315636b6ceb82831a77d91","first_computed_at":"2026-05-20T00:01:45.511089Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-20T00:01:45.511089Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cIc0ZA6iz9DxyvoHNg3lAHUu3QeL2ySAYdSaBsiTXJgged1l3uF7oL7NvYYTdLbU5wWpI1tuyMnhq3nyqNb4CA==","signature_status":"signed_v1","signed_at":"2026-05-20T00:01:45.511759Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.15929","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9220d4bbb012cac0d0b1c9a6ebc4d69cc12c4b5334077d4bb62d11d63ef5ee63","sha256:0db82fd34b9bc770ab5badf27f08e8b5887abd1b6bf6ccc6d8f1764a7f78024d"],"state_sha256":"32c73a17057f7364f4fd4659a99c274be762a00270792691da95ef8e2fc43e62"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fZ2FeUx++/Yr/NgSnt1B1Wf3+UK7G0aqR02XOMd5liHMkYNZ7I7FaeVZPipqsXqmLRYYfOYGmj323g8lylJPDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T23:47:52.708821Z","bundle_sha256":"1949342cec961de394c773383cbc7416a268f239762387c45310b4892c48407f"}}