{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:LNCJDTPFBZZ6KSBG6VH6TLPR67","short_pith_number":"pith:LNCJDTPF","canonical_record":{"source":{"id":"2109.09614","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2021-09-20T15:13:55Z","cross_cats_sorted":["physics.atom-ph"],"title_canon_sha256":"74cf362c790d7583eac3f2195e89c35502a2e60cfd39f952a1b378b4aa273a7d","abstract_canon_sha256":"797be48ef24bfc06c10a4dd4fec4640ddac44b3223157df04fbfc8523b0e83ca"},"schema_version":"1.0"},"canonical_sha256":"5b4491cde50e73e54826f54fe9adf1f7ff161782610cc86036a72fec04b62696","source":{"kind":"arxiv","id":"2109.09614","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2109.09614","created_at":"2026-07-05T03:55:49Z"},{"alias_kind":"arxiv_version","alias_value":"2109.09614v2","created_at":"2026-07-05T03:55:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2109.09614","created_at":"2026-07-05T03:55:49Z"},{"alias_kind":"pith_short_12","alias_value":"LNCJDTPFBZZ6","created_at":"2026-07-05T03:55:49Z"},{"alias_kind":"pith_short_16","alias_value":"LNCJDTPFBZZ6KSBG","created_at":"2026-07-05T03:55:49Z"},{"alias_kind":"pith_short_8","alias_value":"LNCJDTPF","created_at":"2026-07-05T03:55:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:LNCJDTPFBZZ6KSBG6VH6TLPR67","target":"record","payload":{"canonical_record":{"source":{"id":"2109.09614","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2021-09-20T15:13:55Z","cross_cats_sorted":["physics.atom-ph"],"title_canon_sha256":"74cf362c790d7583eac3f2195e89c35502a2e60cfd39f952a1b378b4aa273a7d","abstract_canon_sha256":"797be48ef24bfc06c10a4dd4fec4640ddac44b3223157df04fbfc8523b0e83ca"},"schema_version":"1.0"},"canonical_sha256":"5b4491cde50e73e54826f54fe9adf1f7ff161782610cc86036a72fec04b62696","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:55:49.479023Z","signature_b64":"foEX7xkq11yRDCGrsw1UMLql+jAYWO921rCoNkHoUtMD7MkVUMN/thgmCu/+BrFFlTOvdlA8EJ1OqKRIvkqJAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5b4491cde50e73e54826f54fe9adf1f7ff161782610cc86036a72fec04b62696","last_reissued_at":"2026-07-05T03:55:49.478425Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:55:49.478425Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2109.09614","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T03:55:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ozKN92OTatpDmp6SPFx/BmfenZQrnmt/y6unceIhuo27ECNeLc/xUDTToooB1mtlcEKMONVZVuklAQLMB4PmAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T04:45:24.317596Z"},"content_sha256":"2c4e513ddfbad618e3a6220b875b8e1a0a82f85ee72fb52ff2547a366f8e7f57","schema_version":"1.0","event_id":"sha256:2c4e513ddfbad618e3a6220b875b8e1a0a82f85ee72fb52ff2547a366f8e7f57"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:LNCJDTPFBZZ6KSBG6VH6TLPR67","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Microwave-optical coupling via Rydberg excitons in cuprous oxide","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.atom-ph"],"primary_cat":"cond-mat.mes-hall","authors_text":"Charles S. Adams, Chris Hodges, Danielle Pizzey, Jon D. Pritchett, Joshua P. Rogers, Liam A. P. Gallagher, Matthew P. A Jones, Peter Gr\\\"unwald, Rajan A. Mistry, Stephen A. Lynch, Valentin Walther, Wolfgang Langbein","submitted_at":"2021-09-20T15:13:55Z","abstract_excerpt":"We report exciton-mediated coupling between microwave and optical fields in cuprous oxide (Cu$_2$O) at low temperatures. Rydberg excitonic states with principal quantum number up to $n=12$ were observed at 4~K using both one-photon (absorption) and two-photon (second harmonic generation) spectroscopy. Near resonance with an excitonic state, the addition of a microwave field significantly changed the absorption lineshape, and added sidebands at the microwave frequency to the coherent second harmonic. Both effects showed a complex dependence on $n$ and angular momentum, $l$. All of these feature"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2109.09614","kind":"arxiv","version":2},"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/2109.09614/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":"2026-07-05T03:55:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cdUEY5LEbUCh+u4jFtdR9wqAPclMl16LcGfMNfGELnldY2gJTzZuagcQxYMqNCn0aqWRF+RY8CSXf3rR/HGOCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T04:45:24.318468Z"},"content_sha256":"791f2560e1bc63ac981433a8fe5420d5a494a6235b987580178ba9d1acf04f3e","schema_version":"1.0","event_id":"sha256:791f2560e1bc63ac981433a8fe5420d5a494a6235b987580178ba9d1acf04f3e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LNCJDTPFBZZ6KSBG6VH6TLPR67/bundle.json","state_url":"https://pith.science/pith/LNCJDTPFBZZ6KSBG6VH6TLPR67/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LNCJDTPFBZZ6KSBG6VH6TLPR67/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":"2026-08-20T04:45:24Z","links":{"resolver":"https://pith.science/pith/LNCJDTPFBZZ6KSBG6VH6TLPR67","bundle":"https://pith.science/pith/LNCJDTPFBZZ6KSBG6VH6TLPR67/bundle.json","state":"https://pith.science/pith/LNCJDTPFBZZ6KSBG6VH6TLPR67/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LNCJDTPFBZZ6KSBG6VH6TLPR67/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:LNCJDTPFBZZ6KSBG6VH6TLPR67","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":"797be48ef24bfc06c10a4dd4fec4640ddac44b3223157df04fbfc8523b0e83ca","cross_cats_sorted":["physics.atom-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2021-09-20T15:13:55Z","title_canon_sha256":"74cf362c790d7583eac3f2195e89c35502a2e60cfd39f952a1b378b4aa273a7d"},"schema_version":"1.0","source":{"id":"2109.09614","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2109.09614","created_at":"2026-07-05T03:55:49Z"},{"alias_kind":"arxiv_version","alias_value":"2109.09614v2","created_at":"2026-07-05T03:55:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2109.09614","created_at":"2026-07-05T03:55:49Z"},{"alias_kind":"pith_short_12","alias_value":"LNCJDTPFBZZ6","created_at":"2026-07-05T03:55:49Z"},{"alias_kind":"pith_short_16","alias_value":"LNCJDTPFBZZ6KSBG","created_at":"2026-07-05T03:55:49Z"},{"alias_kind":"pith_short_8","alias_value":"LNCJDTPF","created_at":"2026-07-05T03:55:49Z"}],"graph_snapshots":[{"event_id":"sha256:791f2560e1bc63ac981433a8fe5420d5a494a6235b987580178ba9d1acf04f3e","target":"graph","created_at":"2026-07-05T03:55:49Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2109.09614/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report exciton-mediated coupling between microwave and optical fields in cuprous oxide (Cu$_2$O) at low temperatures. Rydberg excitonic states with principal quantum number up to $n=12$ were observed at 4~K using both one-photon (absorption) and two-photon (second harmonic generation) spectroscopy. Near resonance with an excitonic state, the addition of a microwave field significantly changed the absorption lineshape, and added sidebands at the microwave frequency to the coherent second harmonic. Both effects showed a complex dependence on $n$ and angular momentum, $l$. All of these feature","authors_text":"Charles S. Adams, Chris Hodges, Danielle Pizzey, Jon D. Pritchett, Joshua P. Rogers, Liam A. P. Gallagher, Matthew P. A Jones, Peter Gr\\\"unwald, Rajan A. Mistry, Stephen A. Lynch, Valentin Walther, Wolfgang Langbein","cross_cats":["physics.atom-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2021-09-20T15:13:55Z","title":"Microwave-optical coupling via Rydberg excitons in cuprous oxide"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2109.09614","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":"sha256:2c4e513ddfbad618e3a6220b875b8e1a0a82f85ee72fb52ff2547a366f8e7f57","target":"record","created_at":"2026-07-05T03:55:49Z","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":"797be48ef24bfc06c10a4dd4fec4640ddac44b3223157df04fbfc8523b0e83ca","cross_cats_sorted":["physics.atom-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2021-09-20T15:13:55Z","title_canon_sha256":"74cf362c790d7583eac3f2195e89c35502a2e60cfd39f952a1b378b4aa273a7d"},"schema_version":"1.0","source":{"id":"2109.09614","kind":"arxiv","version":2}},"canonical_sha256":"5b4491cde50e73e54826f54fe9adf1f7ff161782610cc86036a72fec04b62696","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5b4491cde50e73e54826f54fe9adf1f7ff161782610cc86036a72fec04b62696","first_computed_at":"2026-07-05T03:55:49.478425Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:55:49.478425Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"foEX7xkq11yRDCGrsw1UMLql+jAYWO921rCoNkHoUtMD7MkVUMN/thgmCu/+BrFFlTOvdlA8EJ1OqKRIvkqJAA==","signature_status":"signed_v1","signed_at":"2026-07-05T03:55:49.479023Z","signed_message":"canonical_sha256_bytes"},"source_id":"2109.09614","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2c4e513ddfbad618e3a6220b875b8e1a0a82f85ee72fb52ff2547a366f8e7f57","sha256:791f2560e1bc63ac981433a8fe5420d5a494a6235b987580178ba9d1acf04f3e"],"state_sha256":"a0ea4022317f008a5677687eb42b6cdf1c0bb435e18bdf246f3cc203f8fd740e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HFrIYfxLWPWxn1J2/B+/NdY2OnnNnNzuQ7+F1DExgLOIFTWLO49Hoqa9HGEJ1PqHCFvAab+k+/9fLgJqho40DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-20T04:45:24.322821Z","bundle_sha256":"71c2127c12877eadc8e3f75df3630466a6f7e2deda4d9965f57c60f2c5a9a7bf"}}