{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:GWZSBU7MZPE5L7V75I43QGM77L","short_pith_number":"pith:GWZSBU7M","canonical_record":{"source":{"id":"2008.00477","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-08-02T13:15:00Z","cross_cats_sorted":[],"title_canon_sha256":"ad134f3635dc516ef6dd801e0a9fda4b87db895efee8dbdfb06de5daec86bee4","abstract_canon_sha256":"f6eee1e551b8d0236bbdded79ff53129a689abea074ece9f57908f0f4e184567"},"schema_version":"1.0"},"canonical_sha256":"35b320d3eccbc9d5febfea39b8199ffac42109ff16bf08bcb17772f6b7afe53d","source":{"kind":"arxiv","id":"2008.00477","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2008.00477","created_at":"2026-07-05T02:19:30Z"},{"alias_kind":"arxiv_version","alias_value":"2008.00477v3","created_at":"2026-07-05T02:19:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.00477","created_at":"2026-07-05T02:19:30Z"},{"alias_kind":"pith_short_12","alias_value":"GWZSBU7MZPE5","created_at":"2026-07-05T02:19:30Z"},{"alias_kind":"pith_short_16","alias_value":"GWZSBU7MZPE5L7V7","created_at":"2026-07-05T02:19:30Z"},{"alias_kind":"pith_short_8","alias_value":"GWZSBU7M","created_at":"2026-07-05T02:19:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:GWZSBU7MZPE5L7V75I43QGM77L","target":"record","payload":{"canonical_record":{"source":{"id":"2008.00477","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-08-02T13:15:00Z","cross_cats_sorted":[],"title_canon_sha256":"ad134f3635dc516ef6dd801e0a9fda4b87db895efee8dbdfb06de5daec86bee4","abstract_canon_sha256":"f6eee1e551b8d0236bbdded79ff53129a689abea074ece9f57908f0f4e184567"},"schema_version":"1.0"},"canonical_sha256":"35b320d3eccbc9d5febfea39b8199ffac42109ff16bf08bcb17772f6b7afe53d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:19:30.038150Z","signature_b64":"2uvzjaNooBCSSUXJ934xVS8cwmg6dSQmRPVc7X0E3zgtPAj5gIskSXEexzeOW1uk7qzN55zpFzeGoZ7yH94OCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"35b320d3eccbc9d5febfea39b8199ffac42109ff16bf08bcb17772f6b7afe53d","last_reissued_at":"2026-07-05T02:19:30.037687Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:19:30.037687Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2008.00477","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":"2026-07-05T02:19:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0XfKagQdd+hKkDQkw5kRMigE30se5fkGZlnH+5lXs2aJfqFZkFam4wpEP1xHWavmbEy0jBGWlX6uDZyN0QAxDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T18:37:31.161782Z"},"content_sha256":"04bbf17c1fac554fc8c1a1328fff0563f9ff0b773d996740cc98469d66ad4bf1","schema_version":"1.0","event_id":"sha256:04bbf17c1fac554fc8c1a1328fff0563f9ff0b773d996740cc98469d66ad4bf1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:GWZSBU7MZPE5L7V75I43QGM77L","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quantum capacity analysis of multi-level amplitude damping channels","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Stefano Chessa, Vittorio Giovannetti","submitted_at":"2020-08-02T13:15:00Z","abstract_excerpt":"The set of Multi-level Amplitude Damping (MAD) quantum channels is introduced as a generalization of the standard qubit Amplitude Damping Channel to quantum systems of finite dimension $d$. In the special case of $d=3$, by exploiting degradability, data-processing inequalities, and channel isomorphism, we compute the associated quantum and private classical capacities for a rather wide class of maps, extending the set of solvable models known so far. We proceed then to the evaluation of the entanglement assisted, quantum and classical, capacities."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.00477","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2008.00477/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":"2026-07-05T02:19:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fwFGEKC9fOvHOe7SbN/YzQyP/cFCj++L6kPXLtxrxM4cunjkPtX7HQghFDqITxEWgP7D/J8G2TKppx7+aPMSAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T18:37:31.162377Z"},"content_sha256":"1dc8d5e5e150f1889cc2ba91cc11e7c61292c1588618ee1ac5e1e97dc5f196f4","schema_version":"1.0","event_id":"sha256:1dc8d5e5e150f1889cc2ba91cc11e7c61292c1588618ee1ac5e1e97dc5f196f4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GWZSBU7MZPE5L7V75I43QGM77L/bundle.json","state_url":"https://pith.science/pith/GWZSBU7MZPE5L7V75I43QGM77L/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GWZSBU7MZPE5L7V75I43QGM77L/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":"2026-08-20T18:37:31Z","links":{"resolver":"https://pith.science/pith/GWZSBU7MZPE5L7V75I43QGM77L","bundle":"https://pith.science/pith/GWZSBU7MZPE5L7V75I43QGM77L/bundle.json","state":"https://pith.science/pith/GWZSBU7MZPE5L7V75I43QGM77L/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GWZSBU7MZPE5L7V75I43QGM77L/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:GWZSBU7MZPE5L7V75I43QGM77L","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":"f6eee1e551b8d0236bbdded79ff53129a689abea074ece9f57908f0f4e184567","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-08-02T13:15:00Z","title_canon_sha256":"ad134f3635dc516ef6dd801e0a9fda4b87db895efee8dbdfb06de5daec86bee4"},"schema_version":"1.0","source":{"id":"2008.00477","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2008.00477","created_at":"2026-07-05T02:19:30Z"},{"alias_kind":"arxiv_version","alias_value":"2008.00477v3","created_at":"2026-07-05T02:19:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.00477","created_at":"2026-07-05T02:19:30Z"},{"alias_kind":"pith_short_12","alias_value":"GWZSBU7MZPE5","created_at":"2026-07-05T02:19:30Z"},{"alias_kind":"pith_short_16","alias_value":"GWZSBU7MZPE5L7V7","created_at":"2026-07-05T02:19:30Z"},{"alias_kind":"pith_short_8","alias_value":"GWZSBU7M","created_at":"2026-07-05T02:19:30Z"}],"graph_snapshots":[{"event_id":"sha256:1dc8d5e5e150f1889cc2ba91cc11e7c61292c1588618ee1ac5e1e97dc5f196f4","target":"graph","created_at":"2026-07-05T02:19:30Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2008.00477/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The set of Multi-level Amplitude Damping (MAD) quantum channels is introduced as a generalization of the standard qubit Amplitude Damping Channel to quantum systems of finite dimension $d$. In the special case of $d=3$, by exploiting degradability, data-processing inequalities, and channel isomorphism, we compute the associated quantum and private classical capacities for a rather wide class of maps, extending the set of solvable models known so far. We proceed then to the evaluation of the entanglement assisted, quantum and classical, capacities.","authors_text":"Stefano Chessa, Vittorio Giovannetti","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-08-02T13:15:00Z","title":"Quantum capacity analysis of multi-level amplitude damping channels"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.00477","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":"sha256:04bbf17c1fac554fc8c1a1328fff0563f9ff0b773d996740cc98469d66ad4bf1","target":"record","created_at":"2026-07-05T02:19:30Z","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":"f6eee1e551b8d0236bbdded79ff53129a689abea074ece9f57908f0f4e184567","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-08-02T13:15:00Z","title_canon_sha256":"ad134f3635dc516ef6dd801e0a9fda4b87db895efee8dbdfb06de5daec86bee4"},"schema_version":"1.0","source":{"id":"2008.00477","kind":"arxiv","version":3}},"canonical_sha256":"35b320d3eccbc9d5febfea39b8199ffac42109ff16bf08bcb17772f6b7afe53d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"35b320d3eccbc9d5febfea39b8199ffac42109ff16bf08bcb17772f6b7afe53d","first_computed_at":"2026-07-05T02:19:30.037687Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:19:30.037687Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2uvzjaNooBCSSUXJ934xVS8cwmg6dSQmRPVc7X0E3zgtPAj5gIskSXEexzeOW1uk7qzN55zpFzeGoZ7yH94OCQ==","signature_status":"signed_v1","signed_at":"2026-07-05T02:19:30.038150Z","signed_message":"canonical_sha256_bytes"},"source_id":"2008.00477","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:04bbf17c1fac554fc8c1a1328fff0563f9ff0b773d996740cc98469d66ad4bf1","sha256:1dc8d5e5e150f1889cc2ba91cc11e7c61292c1588618ee1ac5e1e97dc5f196f4"],"state_sha256":"1cd68954612586c0c0612055d68293bea771a662420098c47026879f9dddee26"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"y5B98+F18G7DQa4R9pQt1QwDXWA6LZqel662IJbfNTImNAxkkwz0OBvozHZlX79LmzBsnwYotLFwvFQhX5AxDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-20T18:37:31.166240Z","bundle_sha256":"c3307377dc8bc5e16d0bbe7327dfde8ae641f0d7d429e69f7e132929363fd558"}}