{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:EXSCJGP2FYNJR35OT6RBBITUY6","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":"f149dc5d7a68d7bf6d190fae2fcf049ec994b2af969cc6418ac1ddd82f1d52bc","cross_cats_sorted":["cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-09-14T10:42:10Z","title_canon_sha256":"da59f817e0781a9c5834f9dd699ed92902314c2a59caa24cf2705a5aa9091401"},"schema_version":"1.0","source":{"id":"1309.3646","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1309.3646","created_at":"2026-05-18T03:00:49Z"},{"alias_kind":"arxiv_version","alias_value":"1309.3646v2","created_at":"2026-05-18T03:00:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1309.3646","created_at":"2026-05-18T03:00:49Z"},{"alias_kind":"pith_short_12","alias_value":"EXSCJGP2FYNJ","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_16","alias_value":"EXSCJGP2FYNJR35O","created_at":"2026-05-18T12:27:43Z"},{"alias_kind":"pith_short_8","alias_value":"EXSCJGP2","created_at":"2026-05-18T12:27:43Z"}],"graph_snapshots":[{"event_id":"sha256:8f6c055b2774d1636cf7fcad6cdc03022db4f2e1f88a256b71c6a3ec351f6824","target":"graph","created_at":"2026-05-18T03:00:49Z","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 study microwave radiation emitted by a small voltage-biased Josephson junction connected to a superconducting transmission line. An input-output formalism for the radiation field is established, using a perturbation expansion in the junction's critical current. Using output field operators solved up to the second order, we estimate the spectral density and the second-order coherence of the emitted field. For typical transmission line impedances and at frequencies below the main emission peak at the Josephson frequency, radiation occurs predominantly due to two-photon emission. This emission","authors_text":"G\\\"oran Johansson, Juha Lepp\\\"akangas, Michael Marthaler, Mikael Fogelstr\\\"om","cross_cats":["cond-mat.supr-con"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-09-14T10:42:10Z","title":"Input-output description of microwave radiation in the dynamical Coulomb blockade"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1309.3646","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:c78c0eec938e23122e3e0285ba0b458ba5cdbd1ec6532c9cb64a92a8ae50978e","target":"record","created_at":"2026-05-18T03:00:49Z","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":"f149dc5d7a68d7bf6d190fae2fcf049ec994b2af969cc6418ac1ddd82f1d52bc","cross_cats_sorted":["cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-09-14T10:42:10Z","title_canon_sha256":"da59f817e0781a9c5834f9dd699ed92902314c2a59caa24cf2705a5aa9091401"},"schema_version":"1.0","source":{"id":"1309.3646","kind":"arxiv","version":2}},"canonical_sha256":"25e42499fa2e1a98efae9fa210a274c7bd8e516355517c286ae8ed6da174b236","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"25e42499fa2e1a98efae9fa210a274c7bd8e516355517c286ae8ed6da174b236","first_computed_at":"2026-05-18T03:00:49.251114Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:00:49.251114Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8/SKHUrt7lE5VVICN8+TsYpoBy2qUYtorMEsA6cRHli3XU1wSFWl/4ZI3QnVnKR7CAmo2mt3y351lo9C15azCg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:00:49.251726Z","signed_message":"canonical_sha256_bytes"},"source_id":"1309.3646","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c78c0eec938e23122e3e0285ba0b458ba5cdbd1ec6532c9cb64a92a8ae50978e","sha256:8f6c055b2774d1636cf7fcad6cdc03022db4f2e1f88a256b71c6a3ec351f6824"],"state_sha256":"389eb20f1951057109289d90b2c0695f9e9281c6d14f7c56c2772fff69b7fd98"}