{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:ACFEDCGH6B7RAKDLKZOINJFAW5","short_pith_number":"pith:ACFEDCGH","canonical_record":{"source":{"id":"1704.01525","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2017-03-06T22:29:37Z","cross_cats_sorted":[],"title_canon_sha256":"8456635099a47d44db30a8fb9ff6200122cb11daf05a332ee203c31b39fe992b","abstract_canon_sha256":"bb761b2a16795779682d67ed1d75af621bf471a1089d6ca0011b4bf5689a57b2"},"schema_version":"1.0"},"canonical_sha256":"008a4188c7f07f10286b565c86a4a0b74084517983e13a8d4962b2c8f3d1df4c","source":{"kind":"arxiv","id":"1704.01525","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.01525","created_at":"2026-05-18T00:11:18Z"},{"alias_kind":"arxiv_version","alias_value":"1704.01525v1","created_at":"2026-05-18T00:11:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.01525","created_at":"2026-05-18T00:11:18Z"},{"alias_kind":"pith_short_12","alias_value":"ACFEDCGH6B7R","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_16","alias_value":"ACFEDCGH6B7RAKDL","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_8","alias_value":"ACFEDCGH","created_at":"2026-05-18T12:31:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:ACFEDCGH6B7RAKDLKZOINJFAW5","target":"record","payload":{"canonical_record":{"source":{"id":"1704.01525","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2017-03-06T22:29:37Z","cross_cats_sorted":[],"title_canon_sha256":"8456635099a47d44db30a8fb9ff6200122cb11daf05a332ee203c31b39fe992b","abstract_canon_sha256":"bb761b2a16795779682d67ed1d75af621bf471a1089d6ca0011b4bf5689a57b2"},"schema_version":"1.0"},"canonical_sha256":"008a4188c7f07f10286b565c86a4a0b74084517983e13a8d4962b2c8f3d1df4c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:11:18.963335Z","signature_b64":"SJ5wVg9WGoqmeGSmD7mdL8NllR7o3S1aq/WY7Nkxb/pQ7fj/+3PY86kJ1oD288J4wew7mLx2DoicJAD1m5KNDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"008a4188c7f07f10286b565c86a4a0b74084517983e13a8d4962b2c8f3d1df4c","last_reissued_at":"2026-05-18T00:11:18.962684Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:11:18.962684Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1704.01525","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:11:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"a4D9khcurUOmA1dkyG6kpR5LL8lMkSCPrjJGCHlYpegqUjjI01gjvANKzkwroC1V6j3PnTTIVg4HGkwqznd+Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T18:13:23.298253Z"},"content_sha256":"8f9fcdde708d852a592a3ecf433c086dbc834fe8398cb1623307180a03f90806","schema_version":"1.0","event_id":"sha256:8f9fcdde708d852a592a3ecf433c086dbc834fe8398cb1623307180a03f90806"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:ACFEDCGH6B7RAKDLKZOINJFAW5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Graphene Phase Modulator","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"A. C. Ferrari, A. K. Ott, C. Huyghebaerts, G. Contestabile, I. Asselberg, I. Goykhman, J. Van Campenhout, M. Midrio, M.Romagnoli, V. Sorianello","submitted_at":"2017-03-06T22:29:37Z","abstract_excerpt":"We demonstrate a 10Gb/s Graphene Phase Modulator (GPM) integrated in a Mach-Zehnder interferometer configuration. This is a compact device, with a phase-shifter length of only 300$\\mu$m, and 35dB extinction ratio. The GPM has modulation efficiency of 0.28Vcm, one order of magnitude higher compared to state-of-the-art depletion p-n junction Si phase modulators. Our GPM operates with 2V peak-to-peak driving voltage in a push-pull configuration, and it has been tested in a binary transmission of a non-return-to-zero data stream over 50km single mode fibre. This device is the key building block fo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.01525","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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":"2026-05-18T00:11:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ojiRZzAprgHtAxEsjNotw5fjNBpjhifqCG57VbXrXybYxyML1KioRAiak1jlmPYtUrHMc1fFzPgYOfW/ZPg9Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T18:13:23.298612Z"},"content_sha256":"f3358af70013b3d324285a5ac7ef4033a82a0265a66cfac2e57710a9dc448231","schema_version":"1.0","event_id":"sha256:f3358af70013b3d324285a5ac7ef4033a82a0265a66cfac2e57710a9dc448231"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ACFEDCGH6B7RAKDLKZOINJFAW5/bundle.json","state_url":"https://pith.science/pith/ACFEDCGH6B7RAKDLKZOINJFAW5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ACFEDCGH6B7RAKDLKZOINJFAW5/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":"2026-06-27T18:13:23Z","links":{"resolver":"https://pith.science/pith/ACFEDCGH6B7RAKDLKZOINJFAW5","bundle":"https://pith.science/pith/ACFEDCGH6B7RAKDLKZOINJFAW5/bundle.json","state":"https://pith.science/pith/ACFEDCGH6B7RAKDLKZOINJFAW5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ACFEDCGH6B7RAKDLKZOINJFAW5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:ACFEDCGH6B7RAKDLKZOINJFAW5","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":"bb761b2a16795779682d67ed1d75af621bf471a1089d6ca0011b4bf5689a57b2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2017-03-06T22:29:37Z","title_canon_sha256":"8456635099a47d44db30a8fb9ff6200122cb11daf05a332ee203c31b39fe992b"},"schema_version":"1.0","source":{"id":"1704.01525","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.01525","created_at":"2026-05-18T00:11:18Z"},{"alias_kind":"arxiv_version","alias_value":"1704.01525v1","created_at":"2026-05-18T00:11:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.01525","created_at":"2026-05-18T00:11:18Z"},{"alias_kind":"pith_short_12","alias_value":"ACFEDCGH6B7R","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_16","alias_value":"ACFEDCGH6B7RAKDL","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_8","alias_value":"ACFEDCGH","created_at":"2026-05-18T12:31:05Z"}],"graph_snapshots":[{"event_id":"sha256:f3358af70013b3d324285a5ac7ef4033a82a0265a66cfac2e57710a9dc448231","target":"graph","created_at":"2026-05-18T00:11:18Z","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 demonstrate a 10Gb/s Graphene Phase Modulator (GPM) integrated in a Mach-Zehnder interferometer configuration. This is a compact device, with a phase-shifter length of only 300$\\mu$m, and 35dB extinction ratio. The GPM has modulation efficiency of 0.28Vcm, one order of magnitude higher compared to state-of-the-art depletion p-n junction Si phase modulators. Our GPM operates with 2V peak-to-peak driving voltage in a push-pull configuration, and it has been tested in a binary transmission of a non-return-to-zero data stream over 50km single mode fibre. This device is the key building block fo","authors_text":"A. C. Ferrari, A. K. Ott, C. Huyghebaerts, G. Contestabile, I. Asselberg, I. Goykhman, J. Van Campenhout, M. Midrio, M.Romagnoli, V. Sorianello","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2017-03-06T22:29:37Z","title":"Graphene Phase Modulator"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.01525","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":"sha256:8f9fcdde708d852a592a3ecf433c086dbc834fe8398cb1623307180a03f90806","target":"record","created_at":"2026-05-18T00:11:18Z","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":"bb761b2a16795779682d67ed1d75af621bf471a1089d6ca0011b4bf5689a57b2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2017-03-06T22:29:37Z","title_canon_sha256":"8456635099a47d44db30a8fb9ff6200122cb11daf05a332ee203c31b39fe992b"},"schema_version":"1.0","source":{"id":"1704.01525","kind":"arxiv","version":1}},"canonical_sha256":"008a4188c7f07f10286b565c86a4a0b74084517983e13a8d4962b2c8f3d1df4c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"008a4188c7f07f10286b565c86a4a0b74084517983e13a8d4962b2c8f3d1df4c","first_computed_at":"2026-05-18T00:11:18.962684Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:11:18.962684Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SJ5wVg9WGoqmeGSmD7mdL8NllR7o3S1aq/WY7Nkxb/pQ7fj/+3PY86kJ1oD288J4wew7mLx2DoicJAD1m5KNDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:11:18.963335Z","signed_message":"canonical_sha256_bytes"},"source_id":"1704.01525","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8f9fcdde708d852a592a3ecf433c086dbc834fe8398cb1623307180a03f90806","sha256:f3358af70013b3d324285a5ac7ef4033a82a0265a66cfac2e57710a9dc448231"],"state_sha256":"be1db2151a9278fcb1aea19849d7509b00a2fbdb8687c2662bde9111581f9370"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Hk0LPeFVWRMVqM/vpDgw8SirgaEmtIXfGPbdZd76mieRLhyb74JDlCB+vKcyxWt/7syyYi6GDQ3HDOLiCelqDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T18:13:23.300410Z","bundle_sha256":"98142e965829a02de12ad09400f4197ec80433c530483ac3495300911a2bd33d"}}