{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:HEASOQWYPU6L6ACALDBKIM2CJS","short_pith_number":"pith:HEASOQWY","canonical_record":{"source":{"id":"1712.06937","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2017-12-19T14:10:33Z","cross_cats_sorted":["physics.optics","quant-ph"],"title_canon_sha256":"e0bc527b43d0ce28316faba8ab84d682b0a1214f78d49be5bb691e14b7eabd00","abstract_canon_sha256":"88ad3a18899f02e706017351a42d2bc3dc92d8eb8b8f1d88467a0effba2b0c80"},"schema_version":"1.0"},"canonical_sha256":"39012742d87d3cbf004058c2a433424c8dccd4080f4509c7ac25ecc51618d36e","source":{"kind":"arxiv","id":"1712.06937","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1712.06937","created_at":"2026-05-18T00:03:24Z"},{"alias_kind":"arxiv_version","alias_value":"1712.06937v3","created_at":"2026-05-18T00:03:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.06937","created_at":"2026-05-18T00:03:24Z"},{"alias_kind":"pith_short_12","alias_value":"HEASOQWYPU6L","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_16","alias_value":"HEASOQWYPU6L6ACA","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_8","alias_value":"HEASOQWY","created_at":"2026-05-18T12:31:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:HEASOQWYPU6L6ACALDBKIM2CJS","target":"record","payload":{"canonical_record":{"source":{"id":"1712.06937","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2017-12-19T14:10:33Z","cross_cats_sorted":["physics.optics","quant-ph"],"title_canon_sha256":"e0bc527b43d0ce28316faba8ab84d682b0a1214f78d49be5bb691e14b7eabd00","abstract_canon_sha256":"88ad3a18899f02e706017351a42d2bc3dc92d8eb8b8f1d88467a0effba2b0c80"},"schema_version":"1.0"},"canonical_sha256":"39012742d87d3cbf004058c2a433424c8dccd4080f4509c7ac25ecc51618d36e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:03:24.788310Z","signature_b64":"FbGIaRXgZ5iSkmncMGM+YzS+uvC6dtMsU30101yh9wJ16HOFBfFTIvowTY6tDCD8zVvxQeto4sqy0aXe0Q4vCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"39012742d87d3cbf004058c2a433424c8dccd4080f4509c7ac25ecc51618d36e","last_reissued_at":"2026-05-18T00:03:24.787708Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:03:24.787708Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1712.06937","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:03:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pJdH6TqWk2BP3Jv6+KDaTCBPi5PMIZgJufjCP7iBSgijOvIecTDumvER4PlIJsaUG8wRFtBcOHOKiNZ+idfIAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T12:30:29.982202Z"},"content_sha256":"25d1b8bb21a60f72fd6aa8cf9a83f78e9c2c31d9ef9e66aa0d8d6b945123edc5","schema_version":"1.0","event_id":"sha256:25d1b8bb21a60f72fd6aa8cf9a83f78e9c2c31d9ef9e66aa0d8d6b945123edc5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:HEASOQWYPU6L6ACALDBKIM2CJS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On-demand generation of background--free single photons from a solid-state source","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics","quant-ph"],"primary_cat":"cond-mat.mes-hall","authors_text":"Armando Rastelli, Huiying Huang, Julien Zichi, Katharina D. Zeuner, Klaus D. J\\\"ons, Lucas Schweickert, Marcus Reindl, Rinaldo Trotta, Saimon Filipe Covre da Silva, Thomas Lettner, Val Zwiller","submitted_at":"2017-12-19T14:10:33Z","abstract_excerpt":"True on--demand high--repetition--rate single--photon sources are highly sought after for quantum information processing applications. However, any coherently driven two-level quantum system suffers from a finite re-excitation probability under pulsed excitation, causing undesirable multi--photon emission. Here, we present a solid--state source of on--demand single photons yielding a raw second--order coherence of $g^{(2)}(0)=(7.5\\pm1.6)\\times10^{-5}$ without any background subtraction nor data processing. To this date, this is the lowest value of $g^{(2)}(0)$ reported for any single--photon s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.06937","kind":"arxiv","version":3},"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":"2026-05-18T00:03:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KoP8fxegz5JpnSqNWsNvWoJTEUVA0UgWvhSTlCPxW3VH7Pz3ytGHF6JlVoWTuaMGU8owqhtayINeB/OCGRJZBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T12:30:29.982853Z"},"content_sha256":"24e6b0292d1cfdd75e8f696b1d38113856f159d7ba18458110f72375be1fb56f","schema_version":"1.0","event_id":"sha256:24e6b0292d1cfdd75e8f696b1d38113856f159d7ba18458110f72375be1fb56f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HEASOQWYPU6L6ACALDBKIM2CJS/bundle.json","state_url":"https://pith.science/pith/HEASOQWYPU6L6ACALDBKIM2CJS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HEASOQWYPU6L6ACALDBKIM2CJS/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":"2026-05-26T12:30:29Z","links":{"resolver":"https://pith.science/pith/HEASOQWYPU6L6ACALDBKIM2CJS","bundle":"https://pith.science/pith/HEASOQWYPU6L6ACALDBKIM2CJS/bundle.json","state":"https://pith.science/pith/HEASOQWYPU6L6ACALDBKIM2CJS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HEASOQWYPU6L6ACALDBKIM2CJS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:HEASOQWYPU6L6ACALDBKIM2CJS","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":"88ad3a18899f02e706017351a42d2bc3dc92d8eb8b8f1d88467a0effba2b0c80","cross_cats_sorted":["physics.optics","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2017-12-19T14:10:33Z","title_canon_sha256":"e0bc527b43d0ce28316faba8ab84d682b0a1214f78d49be5bb691e14b7eabd00"},"schema_version":"1.0","source":{"id":"1712.06937","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1712.06937","created_at":"2026-05-18T00:03:24Z"},{"alias_kind":"arxiv_version","alias_value":"1712.06937v3","created_at":"2026-05-18T00:03:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.06937","created_at":"2026-05-18T00:03:24Z"},{"alias_kind":"pith_short_12","alias_value":"HEASOQWYPU6L","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_16","alias_value":"HEASOQWYPU6L6ACA","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_8","alias_value":"HEASOQWY","created_at":"2026-05-18T12:31:18Z"}],"graph_snapshots":[{"event_id":"sha256:24e6b0292d1cfdd75e8f696b1d38113856f159d7ba18458110f72375be1fb56f","target":"graph","created_at":"2026-05-18T00:03:24Z","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":"True on--demand high--repetition--rate single--photon sources are highly sought after for quantum information processing applications. However, any coherently driven two-level quantum system suffers from a finite re-excitation probability under pulsed excitation, causing undesirable multi--photon emission. Here, we present a solid--state source of on--demand single photons yielding a raw second--order coherence of $g^{(2)}(0)=(7.5\\pm1.6)\\times10^{-5}$ without any background subtraction nor data processing. To this date, this is the lowest value of $g^{(2)}(0)$ reported for any single--photon s","authors_text":"Armando Rastelli, Huiying Huang, Julien Zichi, Katharina D. Zeuner, Klaus D. J\\\"ons, Lucas Schweickert, Marcus Reindl, Rinaldo Trotta, Saimon Filipe Covre da Silva, Thomas Lettner, Val Zwiller","cross_cats":["physics.optics","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2017-12-19T14:10:33Z","title":"On-demand generation of background--free single photons from a solid-state source"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.06937","kind":"arxiv","version":3},"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":"sha256:25d1b8bb21a60f72fd6aa8cf9a83f78e9c2c31d9ef9e66aa0d8d6b945123edc5","target":"record","created_at":"2026-05-18T00:03:24Z","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":"88ad3a18899f02e706017351a42d2bc3dc92d8eb8b8f1d88467a0effba2b0c80","cross_cats_sorted":["physics.optics","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2017-12-19T14:10:33Z","title_canon_sha256":"e0bc527b43d0ce28316faba8ab84d682b0a1214f78d49be5bb691e14b7eabd00"},"schema_version":"1.0","source":{"id":"1712.06937","kind":"arxiv","version":3}},"canonical_sha256":"39012742d87d3cbf004058c2a433424c8dccd4080f4509c7ac25ecc51618d36e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"39012742d87d3cbf004058c2a433424c8dccd4080f4509c7ac25ecc51618d36e","first_computed_at":"2026-05-18T00:03:24.787708Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:03:24.787708Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FbGIaRXgZ5iSkmncMGM+YzS+uvC6dtMsU30101yh9wJ16HOFBfFTIvowTY6tDCD8zVvxQeto4sqy0aXe0Q4vCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:03:24.788310Z","signed_message":"canonical_sha256_bytes"},"source_id":"1712.06937","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:25d1b8bb21a60f72fd6aa8cf9a83f78e9c2c31d9ef9e66aa0d8d6b945123edc5","sha256:24e6b0292d1cfdd75e8f696b1d38113856f159d7ba18458110f72375be1fb56f"],"state_sha256":"bd85b568f7ba4a291738515fef830d48bcdbcf868dc3bbb52f8b52df9fddf416"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Z7WJHIhPEB8g0g2kM3eBFpcC6zXuxMD2vuRGcVGK0g18qKEOwDzQV+FBXCLXAcJ15/Y7z9fK9+S1B2q9+AITAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T12:30:29.987114Z","bundle_sha256":"30d5b9a60ab97b219f56fc5aa4c81fd4afb20f4d96af64c060d13093ffc1f512"}}