{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:VS2BXFW7E2S3UBBF5BBHWP5UCN","short_pith_number":"pith:VS2BXFW7","canonical_record":{"source":{"id":"1110.3329","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-10-14T20:01:14Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"857fd12c4bb2b4cf32385941860d5d755b881b0328d24977b88686206a8e8b5d","abstract_canon_sha256":"8df3a66b1d98beb736298c85af3b45f1e42ea78e18988ca3d0794ec3d54d7359"},"schema_version":"1.0"},"canonical_sha256":"acb41b96df26a5ba0425e8427b3fb41367ac92c014350a6a59201ec59bfa4785","source":{"kind":"arxiv","id":"1110.3329","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1110.3329","created_at":"2026-05-18T04:02:00Z"},{"alias_kind":"arxiv_version","alias_value":"1110.3329v2","created_at":"2026-05-18T04:02:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1110.3329","created_at":"2026-05-18T04:02:00Z"},{"alias_kind":"pith_short_12","alias_value":"VS2BXFW7E2S3","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_16","alias_value":"VS2BXFW7E2S3UBBF","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_8","alias_value":"VS2BXFW7","created_at":"2026-05-18T12:26:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:VS2BXFW7E2S3UBBF5BBHWP5UCN","target":"record","payload":{"canonical_record":{"source":{"id":"1110.3329","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-10-14T20:01:14Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"857fd12c4bb2b4cf32385941860d5d755b881b0328d24977b88686206a8e8b5d","abstract_canon_sha256":"8df3a66b1d98beb736298c85af3b45f1e42ea78e18988ca3d0794ec3d54d7359"},"schema_version":"1.0"},"canonical_sha256":"acb41b96df26a5ba0425e8427b3fb41367ac92c014350a6a59201ec59bfa4785","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:02:00.574681Z","signature_b64":"bW3a7bg2HM2SruW1R4hWRrxVRPUdh8eDVaM6OqD7RBbnmsLqANCRJgKpeqtPyllazjD70O6Jdeviry5QJazyDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"acb41b96df26a5ba0425e8427b3fb41367ac92c014350a6a59201ec59bfa4785","last_reissued_at":"2026-05-18T04:02:00.573972Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:02:00.573972Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1110.3329","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":"2026-05-18T04:02:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kP5mTIz6N0I0COWDHvu2sVEimJajvGcU+RuMXqtXGaLTYb2S4hraE7SlNJQ5xMNvkgAe+hUCq9OFWXZiYrTSDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T15:40:43.235619Z"},"content_sha256":"2d36b913a23d5e722cd489182747af174f8b294e23dc120ebaa1da4b33fc4f01","schema_version":"1.0","event_id":"sha256:2d36b913a23d5e722cd489182747af174f8b294e23dc120ebaa1da4b33fc4f01"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:VS2BXFW7E2S3UBBF5BBHWP5UCN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Two-photon quantum interference from separate nitrogen vacancy centers in diamond","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"quant-ph","authors_text":"Daniel Twitchen, Hannes Bernien, Lilian Childress, Lucio Robledo, Matthew Markham, Ronald Hanson","submitted_at":"2011-10-14T20:01:14Z","abstract_excerpt":"We report on the observation of quantum interference of the emission from two separate nitrogen vacancy (NV) centers in diamond. Taking advantage of optically induced spin polarization in combination with polarization filtering, we isolate a single transition within the zero-phonon line of the non-resonantly excited NV centers. The time-resolved two-photon interference contrast of this filtered emission reaches 66%. Furthermore, we observe quantum interference from dissimilar NV centers tuned into resonance through the dc Stark effect. These results pave the way towards measurement-based entan"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1110.3329","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":"2026-05-18T04:02:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oxejl1A6iqwMKiRrSQgB4kapsxZByoV7TmJaFbhhbk9smsW/LOhS3VLRkHN4vG8+YCgWTfK3+KkaQWjZ1byABA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T15:40:43.236357Z"},"content_sha256":"47e263d61e6057774fd8ec44f0bb26c1bc5980d5431c88c510b78258e7df4721","schema_version":"1.0","event_id":"sha256:47e263d61e6057774fd8ec44f0bb26c1bc5980d5431c88c510b78258e7df4721"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VS2BXFW7E2S3UBBF5BBHWP5UCN/bundle.json","state_url":"https://pith.science/pith/VS2BXFW7E2S3UBBF5BBHWP5UCN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VS2BXFW7E2S3UBBF5BBHWP5UCN/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":"2026-06-07T15:40:43Z","links":{"resolver":"https://pith.science/pith/VS2BXFW7E2S3UBBF5BBHWP5UCN","bundle":"https://pith.science/pith/VS2BXFW7E2S3UBBF5BBHWP5UCN/bundle.json","state":"https://pith.science/pith/VS2BXFW7E2S3UBBF5BBHWP5UCN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VS2BXFW7E2S3UBBF5BBHWP5UCN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:VS2BXFW7E2S3UBBF5BBHWP5UCN","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":"8df3a66b1d98beb736298c85af3b45f1e42ea78e18988ca3d0794ec3d54d7359","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-10-14T20:01:14Z","title_canon_sha256":"857fd12c4bb2b4cf32385941860d5d755b881b0328d24977b88686206a8e8b5d"},"schema_version":"1.0","source":{"id":"1110.3329","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1110.3329","created_at":"2026-05-18T04:02:00Z"},{"alias_kind":"arxiv_version","alias_value":"1110.3329v2","created_at":"2026-05-18T04:02:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1110.3329","created_at":"2026-05-18T04:02:00Z"},{"alias_kind":"pith_short_12","alias_value":"VS2BXFW7E2S3","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_16","alias_value":"VS2BXFW7E2S3UBBF","created_at":"2026-05-18T12:26:44Z"},{"alias_kind":"pith_short_8","alias_value":"VS2BXFW7","created_at":"2026-05-18T12:26:44Z"}],"graph_snapshots":[{"event_id":"sha256:47e263d61e6057774fd8ec44f0bb26c1bc5980d5431c88c510b78258e7df4721","target":"graph","created_at":"2026-05-18T04:02:00Z","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 on the observation of quantum interference of the emission from two separate nitrogen vacancy (NV) centers in diamond. Taking advantage of optically induced spin polarization in combination with polarization filtering, we isolate a single transition within the zero-phonon line of the non-resonantly excited NV centers. The time-resolved two-photon interference contrast of this filtered emission reaches 66%. Furthermore, we observe quantum interference from dissimilar NV centers tuned into resonance through the dc Stark effect. These results pave the way towards measurement-based entan","authors_text":"Daniel Twitchen, Hannes Bernien, Lilian Childress, Lucio Robledo, Matthew Markham, Ronald Hanson","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-10-14T20:01:14Z","title":"Two-photon quantum interference from separate nitrogen vacancy centers in diamond"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1110.3329","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":"sha256:2d36b913a23d5e722cd489182747af174f8b294e23dc120ebaa1da4b33fc4f01","target":"record","created_at":"2026-05-18T04:02:00Z","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":"8df3a66b1d98beb736298c85af3b45f1e42ea78e18988ca3d0794ec3d54d7359","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2011-10-14T20:01:14Z","title_canon_sha256":"857fd12c4bb2b4cf32385941860d5d755b881b0328d24977b88686206a8e8b5d"},"schema_version":"1.0","source":{"id":"1110.3329","kind":"arxiv","version":2}},"canonical_sha256":"acb41b96df26a5ba0425e8427b3fb41367ac92c014350a6a59201ec59bfa4785","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"acb41b96df26a5ba0425e8427b3fb41367ac92c014350a6a59201ec59bfa4785","first_computed_at":"2026-05-18T04:02:00.573972Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:02:00.573972Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bW3a7bg2HM2SruW1R4hWRrxVRPUdh8eDVaM6OqD7RBbnmsLqANCRJgKpeqtPyllazjD70O6Jdeviry5QJazyDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:02:00.574681Z","signed_message":"canonical_sha256_bytes"},"source_id":"1110.3329","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2d36b913a23d5e722cd489182747af174f8b294e23dc120ebaa1da4b33fc4f01","sha256:47e263d61e6057774fd8ec44f0bb26c1bc5980d5431c88c510b78258e7df4721"],"state_sha256":"5b0c9e8307d4d7f7e67c0e3c1cf34e9f8dea0711eaa79627dedd47e43c53d776"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0HHIsRAi8GRWftmqvK4bhJNBKBAyrabU86IaDgMy7FmtW4hAXNG+zUkW+YM6/grBY5Owj+855tBTQT2074pkDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T15:40:43.239860Z","bundle_sha256":"880e45571bcce3718c426c2f4af947dc0fc90e8c9973bedc78c8564474931770"}}