{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:5RREG2RQZUUB6EKUIUAQ3XQHIJ","short_pith_number":"pith:5RREG2RQ","canonical_record":{"source":{"id":"1303.0606","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-03-04T05:38:19Z","cross_cats_sorted":["cs.IT","math.IT"],"title_canon_sha256":"86a5b21d57ba3cc8afebd25abda9c22df16558f553df94ad7de46de566b902b4","abstract_canon_sha256":"31371091cb90559a8eb2fc198b3c74b3802f901eb46d9dd75d7b1f1c9ee6c8ef"},"schema_version":"1.0"},"canonical_sha256":"ec62436a30cd281f115445010dde07427d6836c9652f02b25228b62b89b9b024","source":{"kind":"arxiv","id":"1303.0606","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1303.0606","created_at":"2026-05-18T00:57:56Z"},{"alias_kind":"arxiv_version","alias_value":"1303.0606v3","created_at":"2026-05-18T00:57:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1303.0606","created_at":"2026-05-18T00:57:56Z"},{"alias_kind":"pith_short_12","alias_value":"5RREG2RQZUUB","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_16","alias_value":"5RREG2RQZUUB6EKU","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_8","alias_value":"5RREG2RQ","created_at":"2026-05-18T12:27:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:5RREG2RQZUUB6EKUIUAQ3XQHIJ","target":"record","payload":{"canonical_record":{"source":{"id":"1303.0606","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-03-04T05:38:19Z","cross_cats_sorted":["cs.IT","math.IT"],"title_canon_sha256":"86a5b21d57ba3cc8afebd25abda9c22df16558f553df94ad7de46de566b902b4","abstract_canon_sha256":"31371091cb90559a8eb2fc198b3c74b3802f901eb46d9dd75d7b1f1c9ee6c8ef"},"schema_version":"1.0"},"canonical_sha256":"ec62436a30cd281f115445010dde07427d6836c9652f02b25228b62b89b9b024","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:57:56.535950Z","signature_b64":"IL6QCkDWWxAJGJ3D2eRvY3wJ29YQpnLbGXfWxGyq5yj0HmF8j3cKChwj7wesI8lvIjddThAZsYbDEFWhHDJpDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ec62436a30cd281f115445010dde07427d6836c9652f02b25228b62b89b9b024","last_reissued_at":"2026-05-18T00:57:56.535603Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:57:56.535603Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1303.0606","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:57:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LmbVr0LYiRlkw8BGtAg2hSKOqAbX6nK+XWySDE8BtmBcW2kroMT/s2NyK0aAcK4x7fx9ZN47mg4ONVRa0U5NDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T03:22:20.724581Z"},"content_sha256":"7370b1d1b654f44586ff3b26b6c85a0e860eace16d8596284f79b2da049ef3be","schema_version":"1.0","event_id":"sha256:7370b1d1b654f44586ff3b26b6c85a0e860eace16d8596284f79b2da049ef3be"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:5RREG2RQZUUB6EKUIUAQ3XQHIJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quantum Information Transmission over a Partially Degradable Channel","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.IT","math.IT"],"primary_cat":"quant-ph","authors_text":"Laszlo Gyongyosi","submitted_at":"2013-03-04T05:38:19Z","abstract_excerpt":"We investigate a quantum coding for quantum communication over a PD (partially degradable) degradable quantum channel. For a PD channel, the degraded environment state can be expressed from the channel output state up to a degrading map. PD channels can be restricted to the set of optical channels which allows for the parties to exploit the benefits in experimental quantum communications. We show that for a PD channel, the partial degradability property leads to higher quantum data rates in comparison to those of a degradable channel. The PD property is particular convenient for quantum commun"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1303.0606","kind":"arxiv","version":3},"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":"2026-05-18T00:57:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"En3WXVh6+6kxdD3b5bCWBGfMEalKKk7YO6PpHvFkR6moArhg+3S4tb0zRC7q3o2IakBoEZzrWYK/MGVB6p9ECw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T03:22:20.725260Z"},"content_sha256":"7fc992138e3eaa1bff64a940beb57281658975e04efcf37bada0784571c5f683","schema_version":"1.0","event_id":"sha256:7fc992138e3eaa1bff64a940beb57281658975e04efcf37bada0784571c5f683"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5RREG2RQZUUB6EKUIUAQ3XQHIJ/bundle.json","state_url":"https://pith.science/pith/5RREG2RQZUUB6EKUIUAQ3XQHIJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5RREG2RQZUUB6EKUIUAQ3XQHIJ/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":"2026-05-25T03:22:20Z","links":{"resolver":"https://pith.science/pith/5RREG2RQZUUB6EKUIUAQ3XQHIJ","bundle":"https://pith.science/pith/5RREG2RQZUUB6EKUIUAQ3XQHIJ/bundle.json","state":"https://pith.science/pith/5RREG2RQZUUB6EKUIUAQ3XQHIJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5RREG2RQZUUB6EKUIUAQ3XQHIJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:5RREG2RQZUUB6EKUIUAQ3XQHIJ","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":"31371091cb90559a8eb2fc198b3c74b3802f901eb46d9dd75d7b1f1c9ee6c8ef","cross_cats_sorted":["cs.IT","math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-03-04T05:38:19Z","title_canon_sha256":"86a5b21d57ba3cc8afebd25abda9c22df16558f553df94ad7de46de566b902b4"},"schema_version":"1.0","source":{"id":"1303.0606","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1303.0606","created_at":"2026-05-18T00:57:56Z"},{"alias_kind":"arxiv_version","alias_value":"1303.0606v3","created_at":"2026-05-18T00:57:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1303.0606","created_at":"2026-05-18T00:57:56Z"},{"alias_kind":"pith_short_12","alias_value":"5RREG2RQZUUB","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_16","alias_value":"5RREG2RQZUUB6EKU","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_8","alias_value":"5RREG2RQ","created_at":"2026-05-18T12:27:34Z"}],"graph_snapshots":[{"event_id":"sha256:7fc992138e3eaa1bff64a940beb57281658975e04efcf37bada0784571c5f683","target":"graph","created_at":"2026-05-18T00:57:56Z","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 investigate a quantum coding for quantum communication over a PD (partially degradable) degradable quantum channel. For a PD channel, the degraded environment state can be expressed from the channel output state up to a degrading map. PD channels can be restricted to the set of optical channels which allows for the parties to exploit the benefits in experimental quantum communications. We show that for a PD channel, the partial degradability property leads to higher quantum data rates in comparison to those of a degradable channel. The PD property is particular convenient for quantum commun","authors_text":"Laszlo Gyongyosi","cross_cats":["cs.IT","math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-03-04T05:38:19Z","title":"Quantum Information Transmission over a Partially Degradable Channel"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1303.0606","kind":"arxiv","version":3},"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":"sha256:7370b1d1b654f44586ff3b26b6c85a0e860eace16d8596284f79b2da049ef3be","target":"record","created_at":"2026-05-18T00:57:56Z","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":"31371091cb90559a8eb2fc198b3c74b3802f901eb46d9dd75d7b1f1c9ee6c8ef","cross_cats_sorted":["cs.IT","math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-03-04T05:38:19Z","title_canon_sha256":"86a5b21d57ba3cc8afebd25abda9c22df16558f553df94ad7de46de566b902b4"},"schema_version":"1.0","source":{"id":"1303.0606","kind":"arxiv","version":3}},"canonical_sha256":"ec62436a30cd281f115445010dde07427d6836c9652f02b25228b62b89b9b024","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ec62436a30cd281f115445010dde07427d6836c9652f02b25228b62b89b9b024","first_computed_at":"2026-05-18T00:57:56.535603Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:57:56.535603Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IL6QCkDWWxAJGJ3D2eRvY3wJ29YQpnLbGXfWxGyq5yj0HmF8j3cKChwj7wesI8lvIjddThAZsYbDEFWhHDJpDg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:57:56.535950Z","signed_message":"canonical_sha256_bytes"},"source_id":"1303.0606","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7370b1d1b654f44586ff3b26b6c85a0e860eace16d8596284f79b2da049ef3be","sha256:7fc992138e3eaa1bff64a940beb57281658975e04efcf37bada0784571c5f683"],"state_sha256":"970f20e62eb9590b8a1f293d82f47d948468d4957c95e4ed4619f5b4af0e5fea"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5QPIywmQsDB9apkIPzAdku8A9VqLPrP8sgl3cHV2jkXTBx41Jjj2zy34rWwQvdvpZvam5pgYUeZDc++bO6IyBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T03:22:20.727938Z","bundle_sha256":"7af574a6c2809172832ca1806d2d791792287cbd8cbad20d33d7ec68d3d18e02"}}