{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:XGZAICCGDM5A37NRCFIXDGAU37","short_pith_number":"pith:XGZAICCG","canonical_record":{"source":{"id":"1508.01639","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-08-07T08:43:42Z","cross_cats_sorted":[],"title_canon_sha256":"94111d7c70180ae2cf664d2adc81319e319cfa7eff903d4701b8024add43cd02","abstract_canon_sha256":"babe69a9ec5011e7612ed272d7866cd7453cd12f23b8b47fcf939cf2fdb5dde4"},"schema_version":"1.0"},"canonical_sha256":"b9b20408461b3a0dfdb11151719814dfd3d74f294ba15443c04ca00bbd83832b","source":{"kind":"arxiv","id":"1508.01639","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.01639","created_at":"2026-05-18T00:48:55Z"},{"alias_kind":"arxiv_version","alias_value":"1508.01639v1","created_at":"2026-05-18T00:48:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.01639","created_at":"2026-05-18T00:48:55Z"},{"alias_kind":"pith_short_12","alias_value":"XGZAICCGDM5A","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_16","alias_value":"XGZAICCGDM5A37NR","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_8","alias_value":"XGZAICCG","created_at":"2026-05-18T12:29:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:XGZAICCGDM5A37NRCFIXDGAU37","target":"record","payload":{"canonical_record":{"source":{"id":"1508.01639","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-08-07T08:43:42Z","cross_cats_sorted":[],"title_canon_sha256":"94111d7c70180ae2cf664d2adc81319e319cfa7eff903d4701b8024add43cd02","abstract_canon_sha256":"babe69a9ec5011e7612ed272d7866cd7453cd12f23b8b47fcf939cf2fdb5dde4"},"schema_version":"1.0"},"canonical_sha256":"b9b20408461b3a0dfdb11151719814dfd3d74f294ba15443c04ca00bbd83832b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:48:55.012473Z","signature_b64":"+f+7AeL1AD2ZdhWjBkDKGGE3pPJMgh1aLIwvNN2J2u6AywuT5gm6pI4dYZquMGj5ozn1DIlBfd8zl3VfgqyhCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b9b20408461b3a0dfdb11151719814dfd3d74f294ba15443c04ca00bbd83832b","last_reissued_at":"2026-05-18T00:48:55.011671Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:48:55.011671Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1508.01639","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":"2026-05-18T00:48:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RLDhw7hTeTzh0XO5czuEjL0batSjcE73NM92Vm2JM41tqgZS3+rpRZ/1sNHZq5WZXkxorN8w4RuxU90TCbGlBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T09:29:08.689024Z"},"content_sha256":"4f119ea3ca751e533d492ec1561c2a14af49db8b5db5fd3f86ac690d8ef59ccd","schema_version":"1.0","event_id":"sha256:4f119ea3ca751e533d492ec1561c2a14af49db8b5db5fd3f86ac690d8ef59ccd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:XGZAICCGDM5A37NRCFIXDGAU37","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Hong-Ou-Mandel interference without beam splitters","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"J. von Zanthier, R. Wiegner, S. M\\\"ahrlein, S. Oppel","submitted_at":"2015-08-07T08:43:42Z","abstract_excerpt":"We propose a new interferometric setup which displays a completely destructive generalized N-photon Hong-Ou-Mandel interference. The key property of this scheme is that is does not require any optical elements like beam splitters or integrated waveguide structures. The interference is intrinsically produced by the evolution of N photons in free space when emitted by N identical statistically independent single photon sources and measured by N detectors in the far field. In this sense the setup is a most simple and natural implementation of the Hong-Ou-Mandel interference effect, i.e., of a com"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.01639","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":"2026-05-18T00:48:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MMFOtxJHvmAkoTkLQtdSmI68YHM7re1jeGRXgSyAdNgZAXXbSHLRTeKWJ1VUbsowgvCGrPnNSfgruAvSSXb8Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T09:29:08.689770Z"},"content_sha256":"6b5a912fe048fa67a02d1f2e7c3c99acb8717b4698a6ebbaae012b5ce37c26a4","schema_version":"1.0","event_id":"sha256:6b5a912fe048fa67a02d1f2e7c3c99acb8717b4698a6ebbaae012b5ce37c26a4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XGZAICCGDM5A37NRCFIXDGAU37/bundle.json","state_url":"https://pith.science/pith/XGZAICCGDM5A37NRCFIXDGAU37/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XGZAICCGDM5A37NRCFIXDGAU37/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":"2026-06-10T09:29:08Z","links":{"resolver":"https://pith.science/pith/XGZAICCGDM5A37NRCFIXDGAU37","bundle":"https://pith.science/pith/XGZAICCGDM5A37NRCFIXDGAU37/bundle.json","state":"https://pith.science/pith/XGZAICCGDM5A37NRCFIXDGAU37/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XGZAICCGDM5A37NRCFIXDGAU37/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:XGZAICCGDM5A37NRCFIXDGAU37","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":"babe69a9ec5011e7612ed272d7866cd7453cd12f23b8b47fcf939cf2fdb5dde4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-08-07T08:43:42Z","title_canon_sha256":"94111d7c70180ae2cf664d2adc81319e319cfa7eff903d4701b8024add43cd02"},"schema_version":"1.0","source":{"id":"1508.01639","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.01639","created_at":"2026-05-18T00:48:55Z"},{"alias_kind":"arxiv_version","alias_value":"1508.01639v1","created_at":"2026-05-18T00:48:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.01639","created_at":"2026-05-18T00:48:55Z"},{"alias_kind":"pith_short_12","alias_value":"XGZAICCGDM5A","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_16","alias_value":"XGZAICCGDM5A37NR","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_8","alias_value":"XGZAICCG","created_at":"2026-05-18T12:29:50Z"}],"graph_snapshots":[{"event_id":"sha256:6b5a912fe048fa67a02d1f2e7c3c99acb8717b4698a6ebbaae012b5ce37c26a4","target":"graph","created_at":"2026-05-18T00:48:55Z","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 propose a new interferometric setup which displays a completely destructive generalized N-photon Hong-Ou-Mandel interference. The key property of this scheme is that is does not require any optical elements like beam splitters or integrated waveguide structures. The interference is intrinsically produced by the evolution of N photons in free space when emitted by N identical statistically independent single photon sources and measured by N detectors in the far field. In this sense the setup is a most simple and natural implementation of the Hong-Ou-Mandel interference effect, i.e., of a com","authors_text":"J. von Zanthier, R. Wiegner, S. M\\\"ahrlein, S. Oppel","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-08-07T08:43:42Z","title":"Hong-Ou-Mandel interference without beam splitters"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.01639","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":"sha256:4f119ea3ca751e533d492ec1561c2a14af49db8b5db5fd3f86ac690d8ef59ccd","target":"record","created_at":"2026-05-18T00:48:55Z","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":"babe69a9ec5011e7612ed272d7866cd7453cd12f23b8b47fcf939cf2fdb5dde4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-08-07T08:43:42Z","title_canon_sha256":"94111d7c70180ae2cf664d2adc81319e319cfa7eff903d4701b8024add43cd02"},"schema_version":"1.0","source":{"id":"1508.01639","kind":"arxiv","version":1}},"canonical_sha256":"b9b20408461b3a0dfdb11151719814dfd3d74f294ba15443c04ca00bbd83832b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b9b20408461b3a0dfdb11151719814dfd3d74f294ba15443c04ca00bbd83832b","first_computed_at":"2026-05-18T00:48:55.011671Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:48:55.011671Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+f+7AeL1AD2ZdhWjBkDKGGE3pPJMgh1aLIwvNN2J2u6AywuT5gm6pI4dYZquMGj5ozn1DIlBfd8zl3VfgqyhCA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:48:55.012473Z","signed_message":"canonical_sha256_bytes"},"source_id":"1508.01639","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4f119ea3ca751e533d492ec1561c2a14af49db8b5db5fd3f86ac690d8ef59ccd","sha256:6b5a912fe048fa67a02d1f2e7c3c99acb8717b4698a6ebbaae012b5ce37c26a4"],"state_sha256":"74d1c8c056ec55c609933d97367189d8b0f16f99ffea87ba3090e052d458544b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XVol52n0L43LrUXm5YElmdBLo3fJrtxTUrRYBjSD1Q5QsFukUTZ7fF/DbOeEsc97d3u0sSqoER2uv5WRoRodCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T09:29:08.694463Z","bundle_sha256":"0cfaf36648405a3add2d614d84b2c73c675899c18925fd124a379ade83ec8b27"}}