{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:AGVAOMGSISPFJP3M5EUXQ2KYZD","short_pith_number":"pith:AGVAOMGS","canonical_record":{"source":{"id":"1604.06424","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-04-21T19:00:34Z","cross_cats_sorted":[],"title_canon_sha256":"f847c7772f8b384add43c4c5cd0d6b10977e72625e0bfc70fa736d53a790404c","abstract_canon_sha256":"8540aefaa936b48aad4e1eafeba12d8e5b0cd06258da8880310ef5fa104b81b6"},"schema_version":"1.0"},"canonical_sha256":"01aa0730d2449e54bf6ce929786958c8d217e169ae0ebe6c76038143fbf5ad3c","source":{"kind":"arxiv","id":"1604.06424","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.06424","created_at":"2026-05-18T01:16:30Z"},{"alias_kind":"arxiv_version","alias_value":"1604.06424v1","created_at":"2026-05-18T01:16:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.06424","created_at":"2026-05-18T01:16:30Z"},{"alias_kind":"pith_short_12","alias_value":"AGVAOMGSISPF","created_at":"2026-05-18T12:30:07Z"},{"alias_kind":"pith_short_16","alias_value":"AGVAOMGSISPFJP3M","created_at":"2026-05-18T12:30:07Z"},{"alias_kind":"pith_short_8","alias_value":"AGVAOMGS","created_at":"2026-05-18T12:30:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:AGVAOMGSISPFJP3M5EUXQ2KYZD","target":"record","payload":{"canonical_record":{"source":{"id":"1604.06424","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-04-21T19:00:34Z","cross_cats_sorted":[],"title_canon_sha256":"f847c7772f8b384add43c4c5cd0d6b10977e72625e0bfc70fa736d53a790404c","abstract_canon_sha256":"8540aefaa936b48aad4e1eafeba12d8e5b0cd06258da8880310ef5fa104b81b6"},"schema_version":"1.0"},"canonical_sha256":"01aa0730d2449e54bf6ce929786958c8d217e169ae0ebe6c76038143fbf5ad3c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:16:30.148690Z","signature_b64":"r5z4anThTExf9joYhWiWkc662qRlKljlwwLc+58mvHw92qv4ueYWsuk0ASh9Q1CnMHZOvtsRA4K4KCyzACv0Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"01aa0730d2449e54bf6ce929786958c8d217e169ae0ebe6c76038143fbf5ad3c","last_reissued_at":"2026-05-18T01:16:30.148121Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:16:30.148121Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1604.06424","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":"2026-05-18T01:16:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"F/E5Crt9eplaZpHMWCyKIWB77jq6Fcrs+DG96NvCQABIeoxqscoCkfBMwZVTg4u8wk/fzy9dCKLWzJdETpuSBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T23:03:52.812457Z"},"content_sha256":"60fcfea4033b892395d663d036ecd0744cca7afbd7b043238b5b0e6860268072","schema_version":"1.0","event_id":"sha256:60fcfea4033b892395d663d036ecd0744cca7afbd7b043238b5b0e6860268072"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:AGVAOMGSISPFJP3M5EUXQ2KYZD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Single mode lasing in transversely multi-moded PT-symmetric microring resonators","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Absar U. Hassan, Demetrios N. Christodoulides, Hoseein Hodaei, Matthias Heinrich, Mercedeh Khajavikhan, Mohammad-Ali Miri, William E. Hayenga","submitted_at":"2016-04-21T19:00:34Z","abstract_excerpt":"Single mode lasing is experimentally demonstrated in a transversely multi-moded InP-based semiconductor microring arrangement. In this system, mode discrimination is attained by judiciously utilizing the exceptional points in a parity-time (PT) symmetric double microring configuration. The proposed scheme is versatile, robust to small fabrication errors, and enables the device to operate in a stable manner considerably above threshold while maintaining spatial and spectral purity. The results presented here pave the way towards a new class of chip-scale semiconductor lasers that utilize gain/l"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.06424","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":"2026-05-18T01:16:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wUXQXTn4y3OHrOpBvhd3SAwNP8u4zBKv4pVQ2MeQyBI1gmIRMdM+bbIBVtmdjDWE9j+UMWQ9DmLuh3/NBg5OAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T23:03:52.812809Z"},"content_sha256":"d9a0ea1013845d94823fc3c27337042433f232493e272214b99d25c101125d49","schema_version":"1.0","event_id":"sha256:d9a0ea1013845d94823fc3c27337042433f232493e272214b99d25c101125d49"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AGVAOMGSISPFJP3M5EUXQ2KYZD/bundle.json","state_url":"https://pith.science/pith/AGVAOMGSISPFJP3M5EUXQ2KYZD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AGVAOMGSISPFJP3M5EUXQ2KYZD/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":"2026-05-28T23:03:52Z","links":{"resolver":"https://pith.science/pith/AGVAOMGSISPFJP3M5EUXQ2KYZD","bundle":"https://pith.science/pith/AGVAOMGSISPFJP3M5EUXQ2KYZD/bundle.json","state":"https://pith.science/pith/AGVAOMGSISPFJP3M5EUXQ2KYZD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AGVAOMGSISPFJP3M5EUXQ2KYZD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:AGVAOMGSISPFJP3M5EUXQ2KYZD","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":"8540aefaa936b48aad4e1eafeba12d8e5b0cd06258da8880310ef5fa104b81b6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-04-21T19:00:34Z","title_canon_sha256":"f847c7772f8b384add43c4c5cd0d6b10977e72625e0bfc70fa736d53a790404c"},"schema_version":"1.0","source":{"id":"1604.06424","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1604.06424","created_at":"2026-05-18T01:16:30Z"},{"alias_kind":"arxiv_version","alias_value":"1604.06424v1","created_at":"2026-05-18T01:16:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.06424","created_at":"2026-05-18T01:16:30Z"},{"alias_kind":"pith_short_12","alias_value":"AGVAOMGSISPF","created_at":"2026-05-18T12:30:07Z"},{"alias_kind":"pith_short_16","alias_value":"AGVAOMGSISPFJP3M","created_at":"2026-05-18T12:30:07Z"},{"alias_kind":"pith_short_8","alias_value":"AGVAOMGS","created_at":"2026-05-18T12:30:07Z"}],"graph_snapshots":[{"event_id":"sha256:d9a0ea1013845d94823fc3c27337042433f232493e272214b99d25c101125d49","target":"graph","created_at":"2026-05-18T01:16:30Z","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":"Single mode lasing is experimentally demonstrated in a transversely multi-moded InP-based semiconductor microring arrangement. In this system, mode discrimination is attained by judiciously utilizing the exceptional points in a parity-time (PT) symmetric double microring configuration. The proposed scheme is versatile, robust to small fabrication errors, and enables the device to operate in a stable manner considerably above threshold while maintaining spatial and spectral purity. The results presented here pave the way towards a new class of chip-scale semiconductor lasers that utilize gain/l","authors_text":"Absar U. Hassan, Demetrios N. Christodoulides, Hoseein Hodaei, Matthias Heinrich, Mercedeh Khajavikhan, Mohammad-Ali Miri, William E. Hayenga","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-04-21T19:00:34Z","title":"Single mode lasing in transversely multi-moded PT-symmetric microring resonators"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.06424","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":"sha256:60fcfea4033b892395d663d036ecd0744cca7afbd7b043238b5b0e6860268072","target":"record","created_at":"2026-05-18T01:16:30Z","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":"8540aefaa936b48aad4e1eafeba12d8e5b0cd06258da8880310ef5fa104b81b6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-04-21T19:00:34Z","title_canon_sha256":"f847c7772f8b384add43c4c5cd0d6b10977e72625e0bfc70fa736d53a790404c"},"schema_version":"1.0","source":{"id":"1604.06424","kind":"arxiv","version":1}},"canonical_sha256":"01aa0730d2449e54bf6ce929786958c8d217e169ae0ebe6c76038143fbf5ad3c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"01aa0730d2449e54bf6ce929786958c8d217e169ae0ebe6c76038143fbf5ad3c","first_computed_at":"2026-05-18T01:16:30.148121Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:16:30.148121Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"r5z4anThTExf9joYhWiWkc662qRlKljlwwLc+58mvHw92qv4ueYWsuk0ASh9Q1CnMHZOvtsRA4K4KCyzACv0Dg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:16:30.148690Z","signed_message":"canonical_sha256_bytes"},"source_id":"1604.06424","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:60fcfea4033b892395d663d036ecd0744cca7afbd7b043238b5b0e6860268072","sha256:d9a0ea1013845d94823fc3c27337042433f232493e272214b99d25c101125d49"],"state_sha256":"e280df4ca08c64fb8a4d23e5abc0d0788343c41cf388f528a5264e2b4c60b7f3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"veXPryKzX9oThzSkMnHfO+g+dGPqi2fX8pTJYNutEiASWdQHpLTq0BwzWI92SkyWcxIn1H9fsMKhhirTrEvHCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T23:03:52.815076Z","bundle_sha256":"bee5c17099c517f062c0e009f47a4e63cbb2ad8ed175014b59d1c859adc223f5"}}