{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:656PF5J7BXWBRP6M6FUT76XL3N","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":"627a61975a8aa213f7f6d14fc0f52840a1538f5a586de5f0c1b086685ff9a31d","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-05-21T06:32:32Z","title_canon_sha256":"7c5f7817d308d61c98a5a58ad08b4af011d7fc484b2571194710c7571c2b2483"},"schema_version":"1.0","source":{"id":"1505.05614","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.05614","created_at":"2026-05-18T01:08:26Z"},{"alias_kind":"arxiv_version","alias_value":"1505.05614v1","created_at":"2026-05-18T01:08:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.05614","created_at":"2026-05-18T01:08:26Z"},{"alias_kind":"pith_short_12","alias_value":"656PF5J7BXWB","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_16","alias_value":"656PF5J7BXWBRP6M","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_8","alias_value":"656PF5J7","created_at":"2026-05-18T12:29:07Z"}],"graph_snapshots":[{"event_id":"sha256:83aa38a08ba28d60fd9ee8e4471cdda28f80c6379de0eddf6668d1d4fc6cd988","target":"graph","created_at":"2026-05-18T01:08:26Z","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":"An on-demand single photon source is a key element in a series of prospective quantum technologies and applications. We demonstrate the operation of a tuneable on-demand microwave photon source based on a fully controllable superconducting artificial atom strongly coupled to an open-end transmission line (a 1D half-space). The atom emits a photon upon excitation by a short microwave $\\pi$-pulse applied through a control line weakly coupled to the atom. The emission and control lines are well decoupled from each other, preventing the direct leakage of radiation from the $\\pi$-pulses used for ex","authors_text":"J.S. Tsai, O.V. Astafiev, Z.H. Peng","cross_cats":["cond-mat.mes-hall","cond-mat.supr-con"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-05-21T06:32:32Z","title":"Tuneable on-demand single-photon source"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.05614","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:d4a501f1fc8c94ea53714c868c6ff2f207c25fd30074e63b1c8779fdcb060d20","target":"record","created_at":"2026-05-18T01:08:26Z","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":"627a61975a8aa213f7f6d14fc0f52840a1538f5a586de5f0c1b086685ff9a31d","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-05-21T06:32:32Z","title_canon_sha256":"7c5f7817d308d61c98a5a58ad08b4af011d7fc484b2571194710c7571c2b2483"},"schema_version":"1.0","source":{"id":"1505.05614","kind":"arxiv","version":1}},"canonical_sha256":"f77cf2f53f0dec18bfccf1693ffaebdb5306c99ffce57555f10baf76458db0f4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f77cf2f53f0dec18bfccf1693ffaebdb5306c99ffce57555f10baf76458db0f4","first_computed_at":"2026-05-18T01:08:26.578616Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:08:26.578616Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"np8mb+NdtRhG+1OTe7IgxUV1bbo8a/K8Ti4yKYweYoH/AvGTVhiIJpXM+p/ns0ZnoCCO0/N7DnD4Nit+Qg/iAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:08:26.579197Z","signed_message":"canonical_sha256_bytes"},"source_id":"1505.05614","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d4a501f1fc8c94ea53714c868c6ff2f207c25fd30074e63b1c8779fdcb060d20","sha256:83aa38a08ba28d60fd9ee8e4471cdda28f80c6379de0eddf6668d1d4fc6cd988"],"state_sha256":"484aaf38a609952ba0303b7c0c77764137bc67af26edfe1757d14bbd8fc5943e"}