{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2005:SRE5EKSMGZERFVZB2QVUP26CPZ","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":"77839c773c2496175609e817af45fcb41e882fcf947da398295f20c11a0fe2af","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.supr-con"],"license":"","primary_cat":"quant-ph","submitted_at":"2005-12-18T08:06:59Z","title_canon_sha256":"6200ad6f62511e5896b482dff78961d854770a710e2d3debc4322adfd74cc709"},"schema_version":"1.0","source":{"id":"quant-ph/0512145","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"quant-ph/0512145","created_at":"2026-05-18T01:37:57Z"},{"alias_kind":"arxiv_version","alias_value":"quant-ph/0512145v2","created_at":"2026-05-18T01:37:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.quant-ph/0512145","created_at":"2026-05-18T01:37:57Z"},{"alias_kind":"pith_short_12","alias_value":"SRE5EKSMGZER","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"SRE5EKSMGZERFVZB","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"SRE5EKSM","created_at":"2026-05-18T12:25:53Z"}],"graph_snapshots":[{"event_id":"sha256:0f692bfeac2ee628d8edd83595624eb795c926c134fd80bde8f00688654c75df","target":"graph","created_at":"2026-05-18T01:37:57Z","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 tunable on-chip micromaser using a superconducting quantum circuit (SQC). By taking advantage of externally controllable state transitions, a state population inversion can be achieved and preserved for the two working levels of the SQC and, when needed, the SQC can generate a single photon. We can regularly repeat these processes in each cycle when the previously generated photon in the cavity is decaying, so that a periodic sequence of single photons can be produced persistently. This provides a controllable way for implementing a persistent single-photon source on a microelectr","authors_text":"C. P. Sun, Franco Nori, J. Q. You, Yu-xi Liu","cross_cats":["cond-mat.mes-hall","cond-mat.supr-con"],"headline":"","license":"","primary_cat":"quant-ph","submitted_at":"2005-12-18T08:06:59Z","title":"Persistent single-photon production by tunable on-chip micromaser with a superconducting quantum circuit"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"quant-ph/0512145","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":"sha256:3a16f8d9327af83a01469b1e6fede3df67fac4401c74bb973703d640776d7139","target":"record","created_at":"2026-05-18T01:37:57Z","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":"77839c773c2496175609e817af45fcb41e882fcf947da398295f20c11a0fe2af","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.supr-con"],"license":"","primary_cat":"quant-ph","submitted_at":"2005-12-18T08:06:59Z","title_canon_sha256":"6200ad6f62511e5896b482dff78961d854770a710e2d3debc4322adfd74cc709"},"schema_version":"1.0","source":{"id":"quant-ph/0512145","kind":"arxiv","version":2}},"canonical_sha256":"9449d22a4c364912d721d42b47ebc27e6495181f3c8d2555968e8474fbd63e38","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9449d22a4c364912d721d42b47ebc27e6495181f3c8d2555968e8474fbd63e38","first_computed_at":"2026-05-18T01:37:57.258208Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:37:57.258208Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bCBhsRH5Y1IMHS3zMaID8V6ZJB/9/K+mPGEmm7tvetiFv3ScxBazvi949sP8lTL55KsnicAl99z9JIk/XQFNAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:37:57.259012Z","signed_message":"canonical_sha256_bytes"},"source_id":"quant-ph/0512145","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3a16f8d9327af83a01469b1e6fede3df67fac4401c74bb973703d640776d7139","sha256:0f692bfeac2ee628d8edd83595624eb795c926c134fd80bde8f00688654c75df"],"state_sha256":"0a0eab8d6e856726c51a8e8c4dc384258b4789190f810bb348a2828f2dfb1a60"}