{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:Z4KUVCI7NXWM5BHQBLMIILB6A5","short_pith_number":"pith:Z4KUVCI7","canonical_record":{"source":{"id":"1908.02046","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-08-06T10:05:37Z","cross_cats_sorted":["math-ph","math.MP"],"title_canon_sha256":"7b70519b85ed14b5ab1766c07c756bd8fa6afa3182e70a884278f4609d171132","abstract_canon_sha256":"8edb812e034853c3d2a90532d572e89e9abf53c18652e45732596c79ce83b272"},"schema_version":"1.0"},"canonical_sha256":"cf154a891f6decce84f00ad8842c3e07414aa00aee328a0d6baebbdd6f4b93c2","source":{"kind":"arxiv","id":"1908.02046","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.02046","created_at":"2026-07-05T00:53:34Z"},{"alias_kind":"arxiv_version","alias_value":"1908.02046v1","created_at":"2026-07-05T00:53:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.02046","created_at":"2026-07-05T00:53:34Z"},{"alias_kind":"pith_short_12","alias_value":"Z4KUVCI7NXWM","created_at":"2026-07-05T00:53:34Z"},{"alias_kind":"pith_short_16","alias_value":"Z4KUVCI7NXWM5BHQ","created_at":"2026-07-05T00:53:34Z"},{"alias_kind":"pith_short_8","alias_value":"Z4KUVCI7","created_at":"2026-07-05T00:53:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:Z4KUVCI7NXWM5BHQBLMIILB6A5","target":"record","payload":{"canonical_record":{"source":{"id":"1908.02046","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-08-06T10:05:37Z","cross_cats_sorted":["math-ph","math.MP"],"title_canon_sha256":"7b70519b85ed14b5ab1766c07c756bd8fa6afa3182e70a884278f4609d171132","abstract_canon_sha256":"8edb812e034853c3d2a90532d572e89e9abf53c18652e45732596c79ce83b272"},"schema_version":"1.0"},"canonical_sha256":"cf154a891f6decce84f00ad8842c3e07414aa00aee328a0d6baebbdd6f4b93c2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:53:34.673596Z","signature_b64":"9ryAYl68X9flHHF4BBDv1I7RNlj0Hot3ZzpPbbPcWVnzBbtbqTnDEMbQUMkYFS1W1LZ1nwiXmmZ5gQC0xk+qBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cf154a891f6decce84f00ad8842c3e07414aa00aee328a0d6baebbdd6f4b93c2","last_reissued_at":"2026-07-05T00:53:34.673121Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:53:34.673121Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1908.02046","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":"2026-07-05T00:53:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XW/1PcfeGLGTHDytVeTBfvFSnwDB31fD/R0rlCcAg+Vwc4Mh5CuzuUeoyhhdlcfcs/8sSGHx3KMKq7AcxKNoAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T01:20:00.442392Z"},"content_sha256":"80678d3fd2f965cae1866fed8d5be4d38691c44113fe82f7580b3d38bf40d760","schema_version":"1.0","event_id":"sha256:80678d3fd2f965cae1866fed8d5be4d38691c44113fe82f7580b3d38bf40d760"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:Z4KUVCI7NXWM5BHQBLMIILB6A5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Designing pretty good state transfer via isospectral reductions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math-ph","math.MP"],"primary_cat":"quant-ph","authors_text":"C. V. Morfonios, F. K. Diakonos, I. Brouzos, M. Pyzh, M. R\\\"ontgen, N. E. Palaiodimopoulos, P. Schmelcher","submitted_at":"2019-08-06T10:05:37Z","abstract_excerpt":"We present an algorithm to design networks that feature pretty good state transfer (PGST), which is of interest for high-fidelity transfer of information in quantum computing. Realizations of PGST networks have so far mostly relied either on very special network geometries or imposed conditions such as transcendental on-site potentials. However, it was recently shown [Eisenberg et al., arXiv:1804.01645] that PGST generally arises when a network's eigenvectors and the factors $P_{\\pm}$ of its characteristic polynomial $P$ fulfill certain conditions, where $P_{\\pm}$ correspond to eigenvectors wh"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.02046","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1908.02046/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":"2026-07-05T00:53:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OoM6NKZ22lf6IJTNM454L0sRZC0bE3059XmUzBf51pi5dxDh5wD77PFxy9gehoyCwKDu2GAWM9VoaDIqJHtMDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T01:20:00.443248Z"},"content_sha256":"6e631d0b3b995c6b9cc903353bf21a75cfc55f7dfbb56ef0a08169d975c16163","schema_version":"1.0","event_id":"sha256:6e631d0b3b995c6b9cc903353bf21a75cfc55f7dfbb56ef0a08169d975c16163"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Z4KUVCI7NXWM5BHQBLMIILB6A5/bundle.json","state_url":"https://pith.science/pith/Z4KUVCI7NXWM5BHQBLMIILB6A5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Z4KUVCI7NXWM5BHQBLMIILB6A5/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":"2026-08-17T01:20:00Z","links":{"resolver":"https://pith.science/pith/Z4KUVCI7NXWM5BHQBLMIILB6A5","bundle":"https://pith.science/pith/Z4KUVCI7NXWM5BHQBLMIILB6A5/bundle.json","state":"https://pith.science/pith/Z4KUVCI7NXWM5BHQBLMIILB6A5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Z4KUVCI7NXWM5BHQBLMIILB6A5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:Z4KUVCI7NXWM5BHQBLMIILB6A5","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":"8edb812e034853c3d2a90532d572e89e9abf53c18652e45732596c79ce83b272","cross_cats_sorted":["math-ph","math.MP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-08-06T10:05:37Z","title_canon_sha256":"7b70519b85ed14b5ab1766c07c756bd8fa6afa3182e70a884278f4609d171132"},"schema_version":"1.0","source":{"id":"1908.02046","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1908.02046","created_at":"2026-07-05T00:53:34Z"},{"alias_kind":"arxiv_version","alias_value":"1908.02046v1","created_at":"2026-07-05T00:53:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.02046","created_at":"2026-07-05T00:53:34Z"},{"alias_kind":"pith_short_12","alias_value":"Z4KUVCI7NXWM","created_at":"2026-07-05T00:53:34Z"},{"alias_kind":"pith_short_16","alias_value":"Z4KUVCI7NXWM5BHQ","created_at":"2026-07-05T00:53:34Z"},{"alias_kind":"pith_short_8","alias_value":"Z4KUVCI7","created_at":"2026-07-05T00:53:34Z"}],"graph_snapshots":[{"event_id":"sha256:6e631d0b3b995c6b9cc903353bf21a75cfc55f7dfbb56ef0a08169d975c16163","target":"graph","created_at":"2026-07-05T00:53:34Z","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/1908.02046/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present an algorithm to design networks that feature pretty good state transfer (PGST), which is of interest for high-fidelity transfer of information in quantum computing. Realizations of PGST networks have so far mostly relied either on very special network geometries or imposed conditions such as transcendental on-site potentials. However, it was recently shown [Eisenberg et al., arXiv:1804.01645] that PGST generally arises when a network's eigenvectors and the factors $P_{\\pm}$ of its characteristic polynomial $P$ fulfill certain conditions, where $P_{\\pm}$ correspond to eigenvectors wh","authors_text":"C. V. Morfonios, F. K. Diakonos, I. Brouzos, M. Pyzh, M. R\\\"ontgen, N. E. Palaiodimopoulos, P. Schmelcher","cross_cats":["math-ph","math.MP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-08-06T10:05:37Z","title":"Designing pretty good state transfer via isospectral reductions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.02046","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":"sha256:80678d3fd2f965cae1866fed8d5be4d38691c44113fe82f7580b3d38bf40d760","target":"record","created_at":"2026-07-05T00:53:34Z","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":"8edb812e034853c3d2a90532d572e89e9abf53c18652e45732596c79ce83b272","cross_cats_sorted":["math-ph","math.MP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2019-08-06T10:05:37Z","title_canon_sha256":"7b70519b85ed14b5ab1766c07c756bd8fa6afa3182e70a884278f4609d171132"},"schema_version":"1.0","source":{"id":"1908.02046","kind":"arxiv","version":1}},"canonical_sha256":"cf154a891f6decce84f00ad8842c3e07414aa00aee328a0d6baebbdd6f4b93c2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cf154a891f6decce84f00ad8842c3e07414aa00aee328a0d6baebbdd6f4b93c2","first_computed_at":"2026-07-05T00:53:34.673121Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:53:34.673121Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9ryAYl68X9flHHF4BBDv1I7RNlj0Hot3ZzpPbbPcWVnzBbtbqTnDEMbQUMkYFS1W1LZ1nwiXmmZ5gQC0xk+qBw==","signature_status":"signed_v1","signed_at":"2026-07-05T00:53:34.673596Z","signed_message":"canonical_sha256_bytes"},"source_id":"1908.02046","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:80678d3fd2f965cae1866fed8d5be4d38691c44113fe82f7580b3d38bf40d760","sha256:6e631d0b3b995c6b9cc903353bf21a75cfc55f7dfbb56ef0a08169d975c16163"],"state_sha256":"6fd0a7fb829b1a039a94e1740a62fd3f3ad52a669b3b42084446a7a0056f80b0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"co2wDlWlxqlCNVCfRdbReLn1E72aNgi5sPvoHQw8zj98MMAU4jzzj6a1PPmgr66z/NlQfvWx8Vovs5V3A6euAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-17T01:20:00.450433Z","bundle_sha256":"073dfd32e1c3e06e14782776acf9e1983ba492d73a0bcbb4392901c84bc1d93d"}}