{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:VA272YT462CLWCNM4SHTSTNBSE","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":"55fe1b990786c6bb137bb74adeb05e59b26067922f0394b959f97e88d90838a2","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-07-14T11:04:46Z","title_canon_sha256":"a267082a22447d32952ae8172c289fe18e388b28132b18c310ec2931dcb60849"},"schema_version":"1.0","source":{"id":"1607.04085","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1607.04085","created_at":"2026-05-18T01:08:08Z"},{"alias_kind":"arxiv_version","alias_value":"1607.04085v1","created_at":"2026-05-18T01:08:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.04085","created_at":"2026-05-18T01:08:08Z"},{"alias_kind":"pith_short_12","alias_value":"VA272YT462CL","created_at":"2026-05-18T12:30:48Z"},{"alias_kind":"pith_short_16","alias_value":"VA272YT462CLWCNM","created_at":"2026-05-18T12:30:48Z"},{"alias_kind":"pith_short_8","alias_value":"VA272YT4","created_at":"2026-05-18T12:30:48Z"}],"graph_snapshots":[{"event_id":"sha256:a9a68c384651ac00ad49f51c60955be6c7b7935e0d86653ea1752c15f12b4588","target":"graph","created_at":"2026-05-18T01:08:08Z","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":"A broad class of planar dielectric media with complex permittivity profiles that are fully invisible, for both left and right incidence sides, is introduced. Such optical media are locally isotropic, non-magnetic and belong to the recently discovered class of Kramers-Kronig media [{\\it Nature Photon.} 9, 436 (2015)], i.e. the spatial profiles of the real and imaginary parts of the dielectric permittivity are related each other by a Hilbert transform. The transition from unidirectional to bidirectional invisibility, and the possibility to realize sharp reflection above a cut-off incidence angle","authors_text":"Stefano Longhi","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-07-14T11:04:46Z","title":"Bidirectional invisibility in Kramers-Kronig optical media"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.04085","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:a7e6bd67af5e6d37f5ef1659995fc09d44cc4fe708e829093615f0afd6822679","target":"record","created_at":"2026-05-18T01:08:08Z","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":"55fe1b990786c6bb137bb74adeb05e59b26067922f0394b959f97e88d90838a2","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-07-14T11:04:46Z","title_canon_sha256":"a267082a22447d32952ae8172c289fe18e388b28132b18c310ec2931dcb60849"},"schema_version":"1.0","source":{"id":"1607.04085","kind":"arxiv","version":1}},"canonical_sha256":"a835fd627cf684bb09ace48f394da19102fc3be8e49364b5341b23770ea4be40","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a835fd627cf684bb09ace48f394da19102fc3be8e49364b5341b23770ea4be40","first_computed_at":"2026-05-18T01:08:08.589135Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:08:08.589135Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"va607CsaEm+NDQroKdSTUP2x5gn2mfcysX982Wye0fPqsIL0zzaerj4DrieFSDkcEZtM3LCQLGUBVjQVAWw7BQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:08:08.589517Z","signed_message":"canonical_sha256_bytes"},"source_id":"1607.04085","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a7e6bd67af5e6d37f5ef1659995fc09d44cc4fe708e829093615f0afd6822679","sha256:a9a68c384651ac00ad49f51c60955be6c7b7935e0d86653ea1752c15f12b4588"],"state_sha256":"35f64d8c586286ec579fdecd4c2041afd7d2fb40033aa3364a54063dbd5162ef"}