{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:XOXNXGBU6CONEG54EDD6I3NTG3","short_pith_number":"pith:XOXNXGBU","canonical_record":{"source":{"id":"1905.12353","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2019-05-29T12:02:45Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"5b52fded31c6836fafd8f6b4c61661ceb3620429c27a918efff4e4cefa707c30","abstract_canon_sha256":"212977d10dd26e9b8260c2e5a170ab4a5be9db294c2014419c14876197a14b50"},"schema_version":"1.0"},"canonical_sha256":"bbaedb9834f09cd21bbc20c7e46db336d00462c4091a77494c4541c9775e4d3f","source":{"kind":"arxiv","id":"1905.12353","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.12353","created_at":"2026-07-05T03:12:25Z"},{"alias_kind":"arxiv_version","alias_value":"1905.12353v3","created_at":"2026-07-05T03:12:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.12353","created_at":"2026-07-05T03:12:25Z"},{"alias_kind":"pith_short_12","alias_value":"XOXNXGBU6CON","created_at":"2026-07-05T03:12:25Z"},{"alias_kind":"pith_short_16","alias_value":"XOXNXGBU6CONEG54","created_at":"2026-07-05T03:12:25Z"},{"alias_kind":"pith_short_8","alias_value":"XOXNXGBU","created_at":"2026-07-05T03:12:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:XOXNXGBU6CONEG54EDD6I3NTG3","target":"record","payload":{"canonical_record":{"source":{"id":"1905.12353","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2019-05-29T12:02:45Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"5b52fded31c6836fafd8f6b4c61661ceb3620429c27a918efff4e4cefa707c30","abstract_canon_sha256":"212977d10dd26e9b8260c2e5a170ab4a5be9db294c2014419c14876197a14b50"},"schema_version":"1.0"},"canonical_sha256":"bbaedb9834f09cd21bbc20c7e46db336d00462c4091a77494c4541c9775e4d3f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:12:25.198463Z","signature_b64":"JvM4utZjHVHMcvo0Les9OzLY2EhS+b4bFP5mI+MojdUTst1LcXZcSXoZYSOLQgneuniYT09qQgrOSaSlSLsqDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bbaedb9834f09cd21bbc20c7e46db336d00462c4091a77494c4541c9775e4d3f","last_reissued_at":"2026-07-05T03:12:25.198023Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:12:25.198023Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1905.12353","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":"2026-07-05T03:12:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xl55QLFqkmiW3tZ+56sKzw2IOki2POwixIdAJZojAu8qcCv5qwjr/qD0vAbAeg3VvAFKF+GRu5nPsfr+O6sDBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T00:35:37.624387Z"},"content_sha256":"d4b8dc4f8ddf7bd072fefbfb57c4fc80abf5a4a7022d66b9a629a5870be2e282","schema_version":"1.0","event_id":"sha256:d4b8dc4f8ddf7bd072fefbfb57c4fc80abf5a4a7022d66b9a629a5870be2e282"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:XOXNXGBU6CONEG54EDD6I3NTG3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A magnonic directional coupler for integrated magnonic half-adders","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"physics.app-ph","authors_text":"A. V. Chumak, B. Heinz, B. L\\\"agel, C. Adelmann, C. Dubs, F. Ciubotaru, F. Kohl, M. Geilen, M. Kewenig, M. Mohseni, M. Schneider, O. V. Dobrovolskiy, P. Pirro, Q. Wang, R. Verba, S. D. Cotofana, T. Br\\\"acher","submitted_at":"2019-05-29T12:02:45Z","abstract_excerpt":"Magnons, the quanta of spin waves, could be used to encode information in beyond-Moore computing applications, and magnonic device components, including logic gates, transistors, and units for non-Boolean computing, have already been developed. Magnonic directional couplers, which can function as circuit building blocks, have also been explored, but have been impractical because of their millimetre dimensions and multi-mode spectra. Here, we report a magnonic directional coupler based on yttrium iron garnet single-mode waveguides of 350 nm width. We use the amplitude of a spin-wave to encode i"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.12353","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1905.12353/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T03:12:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rhqWLsdyV09GdvdkTYIgwdWRFcvVBDvqWdEYmtjk39ELFfC7qolsy7zzgGhNeXJxNynKYq4jBaxU6Yb+3vg7Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T00:35:37.624947Z"},"content_sha256":"6512a65c9b5441dcd921afd2558d8d9eb8addfc6736f109338f8ddf00c62f7c7","schema_version":"1.0","event_id":"sha256:6512a65c9b5441dcd921afd2558d8d9eb8addfc6736f109338f8ddf00c62f7c7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XOXNXGBU6CONEG54EDD6I3NTG3/bundle.json","state_url":"https://pith.science/pith/XOXNXGBU6CONEG54EDD6I3NTG3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XOXNXGBU6CONEG54EDD6I3NTG3/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":"2026-08-05T00:35:37Z","links":{"resolver":"https://pith.science/pith/XOXNXGBU6CONEG54EDD6I3NTG3","bundle":"https://pith.science/pith/XOXNXGBU6CONEG54EDD6I3NTG3/bundle.json","state":"https://pith.science/pith/XOXNXGBU6CONEG54EDD6I3NTG3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XOXNXGBU6CONEG54EDD6I3NTG3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:XOXNXGBU6CONEG54EDD6I3NTG3","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":"212977d10dd26e9b8260c2e5a170ab4a5be9db294c2014419c14876197a14b50","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2019-05-29T12:02:45Z","title_canon_sha256":"5b52fded31c6836fafd8f6b4c61661ceb3620429c27a918efff4e4cefa707c30"},"schema_version":"1.0","source":{"id":"1905.12353","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.12353","created_at":"2026-07-05T03:12:25Z"},{"alias_kind":"arxiv_version","alias_value":"1905.12353v3","created_at":"2026-07-05T03:12:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.12353","created_at":"2026-07-05T03:12:25Z"},{"alias_kind":"pith_short_12","alias_value":"XOXNXGBU6CON","created_at":"2026-07-05T03:12:25Z"},{"alias_kind":"pith_short_16","alias_value":"XOXNXGBU6CONEG54","created_at":"2026-07-05T03:12:25Z"},{"alias_kind":"pith_short_8","alias_value":"XOXNXGBU","created_at":"2026-07-05T03:12:25Z"}],"graph_snapshots":[{"event_id":"sha256:6512a65c9b5441dcd921afd2558d8d9eb8addfc6736f109338f8ddf00c62f7c7","target":"graph","created_at":"2026-07-05T03:12:25Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1905.12353/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Magnons, the quanta of spin waves, could be used to encode information in beyond-Moore computing applications, and magnonic device components, including logic gates, transistors, and units for non-Boolean computing, have already been developed. Magnonic directional couplers, which can function as circuit building blocks, have also been explored, but have been impractical because of their millimetre dimensions and multi-mode spectra. Here, we report a magnonic directional coupler based on yttrium iron garnet single-mode waveguides of 350 nm width. We use the amplitude of a spin-wave to encode i","authors_text":"A. V. Chumak, B. Heinz, B. L\\\"agel, C. Adelmann, C. Dubs, F. Ciubotaru, F. Kohl, M. Geilen, M. Kewenig, M. Mohseni, M. Schneider, O. V. Dobrovolskiy, P. Pirro, Q. Wang, R. Verba, S. D. Cotofana, T. Br\\\"acher","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2019-05-29T12:02:45Z","title":"A magnonic directional coupler for integrated magnonic half-adders"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.12353","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:d4b8dc4f8ddf7bd072fefbfb57c4fc80abf5a4a7022d66b9a629a5870be2e282","target":"record","created_at":"2026-07-05T03:12:25Z","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":"212977d10dd26e9b8260c2e5a170ab4a5be9db294c2014419c14876197a14b50","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2019-05-29T12:02:45Z","title_canon_sha256":"5b52fded31c6836fafd8f6b4c61661ceb3620429c27a918efff4e4cefa707c30"},"schema_version":"1.0","source":{"id":"1905.12353","kind":"arxiv","version":3}},"canonical_sha256":"bbaedb9834f09cd21bbc20c7e46db336d00462c4091a77494c4541c9775e4d3f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bbaedb9834f09cd21bbc20c7e46db336d00462c4091a77494c4541c9775e4d3f","first_computed_at":"2026-07-05T03:12:25.198023Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:12:25.198023Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JvM4utZjHVHMcvo0Les9OzLY2EhS+b4bFP5mI+MojdUTst1LcXZcSXoZYSOLQgneuniYT09qQgrOSaSlSLsqDw==","signature_status":"signed_v1","signed_at":"2026-07-05T03:12:25.198463Z","signed_message":"canonical_sha256_bytes"},"source_id":"1905.12353","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d4b8dc4f8ddf7bd072fefbfb57c4fc80abf5a4a7022d66b9a629a5870be2e282","sha256:6512a65c9b5441dcd921afd2558d8d9eb8addfc6736f109338f8ddf00c62f7c7"],"state_sha256":"370e9620b3b916a3dd8d0bc30ed5fdeb90d2e6ed2772b91a512c2c7646df0c74"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"s8tWacDNbcEflMEHqXoHGH764Ujlk5am9+rxr4S0NZpBcjg7XX9sH+hz303ukjUT1ia2fr+hEoIakLr64KfcCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T00:35:37.629038Z","bundle_sha256":"6f7a2a67748e898513353ace5db39e84989798937417c2dc9229bf8d44d08c6b"}}