{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:2ODBORYYM3BEVQVMET5U3FCUD3","short_pith_number":"pith:2ODBORYY","canonical_record":{"source":{"id":"2108.04722","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.optics","submitted_at":"2021-08-10T14:40:25Z","cross_cats_sorted":[],"title_canon_sha256":"0fffdd792a98e0b2a1fd5b68c167110b4f6d6941a5c5d38380cbe50cca891e31","abstract_canon_sha256":"905e6014383149011766d24b867838d81d2c29dadd2b221117eb1abb960e45bd"},"schema_version":"1.0"},"canonical_sha256":"d38617471866c24ac2ac24fb4d94541ee8456d30bf79e1926afb1514e3d9924b","source":{"kind":"arxiv","id":"2108.04722","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2108.04722","created_at":"2026-07-05T03:42:45Z"},{"alias_kind":"arxiv_version","alias_value":"2108.04722v2","created_at":"2026-07-05T03:42:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2108.04722","created_at":"2026-07-05T03:42:45Z"},{"alias_kind":"pith_short_12","alias_value":"2ODBORYYM3BE","created_at":"2026-07-05T03:42:45Z"},{"alias_kind":"pith_short_16","alias_value":"2ODBORYYM3BEVQVM","created_at":"2026-07-05T03:42:45Z"},{"alias_kind":"pith_short_8","alias_value":"2ODBORYY","created_at":"2026-07-05T03:42:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:2ODBORYYM3BEVQVMET5U3FCUD3","target":"record","payload":{"canonical_record":{"source":{"id":"2108.04722","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.optics","submitted_at":"2021-08-10T14:40:25Z","cross_cats_sorted":[],"title_canon_sha256":"0fffdd792a98e0b2a1fd5b68c167110b4f6d6941a5c5d38380cbe50cca891e31","abstract_canon_sha256":"905e6014383149011766d24b867838d81d2c29dadd2b221117eb1abb960e45bd"},"schema_version":"1.0"},"canonical_sha256":"d38617471866c24ac2ac24fb4d94541ee8456d30bf79e1926afb1514e3d9924b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:42:45.842123Z","signature_b64":"3g1Lfg6ERzCPt92edqlZ7yUZeeBYXnPfVmVbNICPvKRLQNRQ3uAUHhjGFv4zDHhup67+OuMaG0O+VWst9UiFAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d38617471866c24ac2ac24fb4d94541ee8456d30bf79e1926afb1514e3d9924b","last_reissued_at":"2026-07-05T03:42:45.841657Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:42:45.841657Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2108.04722","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":"2026-07-05T03:42:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TvAWzcORFymY856FSLeEoy4U4F4zrEYvxCaqHUX7XmjqkUklq00xIHyR5P3wJ2IIKKtCxZEE9Q3uzFpUfBS2BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T18:11:50.270935Z"},"content_sha256":"9b1389461edb2de1d8253970da29e3b546b5b99d654f39ed314a0074ba595d44","schema_version":"1.0","event_id":"sha256:9b1389461edb2de1d8253970da29e3b546b5b99d654f39ed314a0074ba595d44"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:2ODBORYYM3BEVQVMET5U3FCUD3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Strong coupling in semiconductor hyperbolic metamaterials","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Dongxia Wei, Patrick Sohr, Stephanie Law, Zhengtianye Wang","submitted_at":"2021-08-10T14:40:25Z","abstract_excerpt":"Semiconductor-based layered hyperbolic metamaterials (HMMs) house high-wavevector volume plasmon polariton (VPP) modes in the infrared spectral range. VPP modes have successfully been exploited in the weak-coupling regime through the enhanced Purcell effect. In this paper, we experimentally demonstrate strong coupling between the VPP modes in a semiconductor HMM and the intersubband transition of epitaxially-embedded quantum wells. We observe clear anticrossings in the dispersion curves for the zeroth-, first-, second-, and third-order VPP modes, resulting in upper and lower polariton branches"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2108.04722","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/2108.04722/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":"2026-07-05T03:42:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"w85GnqIrnfoGuLL7X4N9iCjnkRYybPMr5qpGdPZKci8JkPvilMFBapfbHDmk9PHVIvZNuWNsdcjPKcHwM9P/BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T18:11:50.271433Z"},"content_sha256":"1649529846b8a3b7b6bdd057ef03a77c1719b8c41d9dad15655c78f1952aa82d","schema_version":"1.0","event_id":"sha256:1649529846b8a3b7b6bdd057ef03a77c1719b8c41d9dad15655c78f1952aa82d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2ODBORYYM3BEVQVMET5U3FCUD3/bundle.json","state_url":"https://pith.science/pith/2ODBORYYM3BEVQVMET5U3FCUD3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2ODBORYYM3BEVQVMET5U3FCUD3/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":"2026-08-19T18:11:50Z","links":{"resolver":"https://pith.science/pith/2ODBORYYM3BEVQVMET5U3FCUD3","bundle":"https://pith.science/pith/2ODBORYYM3BEVQVMET5U3FCUD3/bundle.json","state":"https://pith.science/pith/2ODBORYYM3BEVQVMET5U3FCUD3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2ODBORYYM3BEVQVMET5U3FCUD3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:2ODBORYYM3BEVQVMET5U3FCUD3","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":"905e6014383149011766d24b867838d81d2c29dadd2b221117eb1abb960e45bd","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.optics","submitted_at":"2021-08-10T14:40:25Z","title_canon_sha256":"0fffdd792a98e0b2a1fd5b68c167110b4f6d6941a5c5d38380cbe50cca891e31"},"schema_version":"1.0","source":{"id":"2108.04722","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2108.04722","created_at":"2026-07-05T03:42:45Z"},{"alias_kind":"arxiv_version","alias_value":"2108.04722v2","created_at":"2026-07-05T03:42:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2108.04722","created_at":"2026-07-05T03:42:45Z"},{"alias_kind":"pith_short_12","alias_value":"2ODBORYYM3BE","created_at":"2026-07-05T03:42:45Z"},{"alias_kind":"pith_short_16","alias_value":"2ODBORYYM3BEVQVM","created_at":"2026-07-05T03:42:45Z"},{"alias_kind":"pith_short_8","alias_value":"2ODBORYY","created_at":"2026-07-05T03:42:45Z"}],"graph_snapshots":[{"event_id":"sha256:1649529846b8a3b7b6bdd057ef03a77c1719b8c41d9dad15655c78f1952aa82d","target":"graph","created_at":"2026-07-05T03:42:45Z","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/2108.04722/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Semiconductor-based layered hyperbolic metamaterials (HMMs) house high-wavevector volume plasmon polariton (VPP) modes in the infrared spectral range. VPP modes have successfully been exploited in the weak-coupling regime through the enhanced Purcell effect. In this paper, we experimentally demonstrate strong coupling between the VPP modes in a semiconductor HMM and the intersubband transition of epitaxially-embedded quantum wells. We observe clear anticrossings in the dispersion curves for the zeroth-, first-, second-, and third-order VPP modes, resulting in upper and lower polariton branches","authors_text":"Dongxia Wei, Patrick Sohr, Stephanie Law, Zhengtianye Wang","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.optics","submitted_at":"2021-08-10T14:40:25Z","title":"Strong coupling in semiconductor hyperbolic metamaterials"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2108.04722","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":"sha256:9b1389461edb2de1d8253970da29e3b546b5b99d654f39ed314a0074ba595d44","target":"record","created_at":"2026-07-05T03:42:45Z","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":"905e6014383149011766d24b867838d81d2c29dadd2b221117eb1abb960e45bd","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.optics","submitted_at":"2021-08-10T14:40:25Z","title_canon_sha256":"0fffdd792a98e0b2a1fd5b68c167110b4f6d6941a5c5d38380cbe50cca891e31"},"schema_version":"1.0","source":{"id":"2108.04722","kind":"arxiv","version":2}},"canonical_sha256":"d38617471866c24ac2ac24fb4d94541ee8456d30bf79e1926afb1514e3d9924b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d38617471866c24ac2ac24fb4d94541ee8456d30bf79e1926afb1514e3d9924b","first_computed_at":"2026-07-05T03:42:45.841657Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:42:45.841657Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3g1Lfg6ERzCPt92edqlZ7yUZeeBYXnPfVmVbNICPvKRLQNRQ3uAUHhjGFv4zDHhup67+OuMaG0O+VWst9UiFAw==","signature_status":"signed_v1","signed_at":"2026-07-05T03:42:45.842123Z","signed_message":"canonical_sha256_bytes"},"source_id":"2108.04722","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9b1389461edb2de1d8253970da29e3b546b5b99d654f39ed314a0074ba595d44","sha256:1649529846b8a3b7b6bdd057ef03a77c1719b8c41d9dad15655c78f1952aa82d"],"state_sha256":"82cf3433011afc31363edaebf1258748d6b65218f7a6da22db776bd3052ebafe"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uEeBKNr6RCFreYDl7jAWcjZ9djlbv0wxVr4W5NFhYYjn2NO/PaW57zNGC1Y3HN+2LXKayW8ZnUQVrv6RHKoSCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-19T18:11:50.275367Z","bundle_sha256":"ef8d3db336ecce49b3be2a46c77963c1d18c8c2d64d73fcb6486b447316e89f9"}}