{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:IJ5DGF367QZTVMGPJFV3B7UOLL","short_pith_number":"pith:IJ5DGF36","canonical_record":{"source":{"id":"1711.10165","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-11-28T08:06:18Z","cross_cats_sorted":[],"title_canon_sha256":"164cf26ef05bf325513dfb2fe1c24c2b5aaff529d1b4aad3b24ec21ee78fbc95","abstract_canon_sha256":"dc7ad1088822d56d328bf7813d19977c7697d2171dfd961b0ddc2c46db45ad27"},"schema_version":"1.0"},"canonical_sha256":"427a33177efc333ab0cf496bb0fe8e5ad704c043455d085dd385be7bb2e78787","source":{"kind":"arxiv","id":"1711.10165","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.10165","created_at":"2026-05-18T00:20:05Z"},{"alias_kind":"arxiv_version","alias_value":"1711.10165v2","created_at":"2026-05-18T00:20:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.10165","created_at":"2026-05-18T00:20:05Z"},{"alias_kind":"pith_short_12","alias_value":"IJ5DGF367QZT","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_16","alias_value":"IJ5DGF367QZTVMGP","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_8","alias_value":"IJ5DGF36","created_at":"2026-05-18T12:31:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:IJ5DGF367QZTVMGPJFV3B7UOLL","target":"record","payload":{"canonical_record":{"source":{"id":"1711.10165","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-11-28T08:06:18Z","cross_cats_sorted":[],"title_canon_sha256":"164cf26ef05bf325513dfb2fe1c24c2b5aaff529d1b4aad3b24ec21ee78fbc95","abstract_canon_sha256":"dc7ad1088822d56d328bf7813d19977c7697d2171dfd961b0ddc2c46db45ad27"},"schema_version":"1.0"},"canonical_sha256":"427a33177efc333ab0cf496bb0fe8e5ad704c043455d085dd385be7bb2e78787","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:20:05.449620Z","signature_b64":"MSojdJR/2Ey0Is5g7qbKqjo4GLQqraA+xMS7krI+WX0CIu3B/UlD94GSFuSgjoXgcK7DvDEGRwNser39m2ODBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"427a33177efc333ab0cf496bb0fe8e5ad704c043455d085dd385be7bb2e78787","last_reissued_at":"2026-05-18T00:20:05.448925Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:20:05.448925Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1711.10165","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:20:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TSU5ZeTvajvVz1/anM81B9WoHbxncc9/sXOLVLS0SfRS7fUyCMnRHVzKjxt/QtLCcohvc4V2uOq88Hde7V2pBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T22:56:51.563205Z"},"content_sha256":"43da49e4e0118247961b21e62137651ce60a4fb4ab0ad6aba01cfb6fe41c2f90","schema_version":"1.0","event_id":"sha256:43da49e4e0118247961b21e62137651ce60a4fb4ab0ad6aba01cfb6fe41c2f90"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:IJ5DGF367QZTVMGPJFV3B7UOLL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Enhanced communication with the assistance of indefinite causal order","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Daniel Ebler, Giulio Chiribella, Sina Salek","submitted_at":"2017-11-28T08:06:18Z","abstract_excerpt":"In quantum Shannon theory, the way information is encoded and decoded takes advantage of the laws of quantum mechanics, while the way communication channels are interlinked is assumed to be classical. In this Letter we relax the assumption that quantum channels are combined classically, showing that a quantum communication network where quantum channels are combined in a superposition of different orders can achieve tasks that are impossible in conventional quantum Shannon theory. In particular, we show that two identical copies of a completely depolarizing channel become able to transmit info"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.10165","kind":"arxiv","version":2},"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":"2026-05-18T00:20:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VDOq6cIICmxauv9pnTvak7eo2H1n8le3QxOpQEKzdhL0AW40d5+PHBX9Qd5JIsC/FvNtivjTbLcv9qrT2flHAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T22:56:51.563884Z"},"content_sha256":"05bf497585ab9c777554d862f71b03f881b715ecbac3ae361f5d08c4c3a7983d","schema_version":"1.0","event_id":"sha256:05bf497585ab9c777554d862f71b03f881b715ecbac3ae361f5d08c4c3a7983d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IJ5DGF367QZTVMGPJFV3B7UOLL/bundle.json","state_url":"https://pith.science/pith/IJ5DGF367QZTVMGPJFV3B7UOLL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IJ5DGF367QZTVMGPJFV3B7UOLL/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":"2026-05-23T22:56:51Z","links":{"resolver":"https://pith.science/pith/IJ5DGF367QZTVMGPJFV3B7UOLL","bundle":"https://pith.science/pith/IJ5DGF367QZTVMGPJFV3B7UOLL/bundle.json","state":"https://pith.science/pith/IJ5DGF367QZTVMGPJFV3B7UOLL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IJ5DGF367QZTVMGPJFV3B7UOLL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:IJ5DGF367QZTVMGPJFV3B7UOLL","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":"dc7ad1088822d56d328bf7813d19977c7697d2171dfd961b0ddc2c46db45ad27","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-11-28T08:06:18Z","title_canon_sha256":"164cf26ef05bf325513dfb2fe1c24c2b5aaff529d1b4aad3b24ec21ee78fbc95"},"schema_version":"1.0","source":{"id":"1711.10165","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1711.10165","created_at":"2026-05-18T00:20:05Z"},{"alias_kind":"arxiv_version","alias_value":"1711.10165v2","created_at":"2026-05-18T00:20:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.10165","created_at":"2026-05-18T00:20:05Z"},{"alias_kind":"pith_short_12","alias_value":"IJ5DGF367QZT","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_16","alias_value":"IJ5DGF367QZTVMGP","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_8","alias_value":"IJ5DGF36","created_at":"2026-05-18T12:31:21Z"}],"graph_snapshots":[{"event_id":"sha256:05bf497585ab9c777554d862f71b03f881b715ecbac3ae361f5d08c4c3a7983d","target":"graph","created_at":"2026-05-18T00:20:05Z","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":"In quantum Shannon theory, the way information is encoded and decoded takes advantage of the laws of quantum mechanics, while the way communication channels are interlinked is assumed to be classical. In this Letter we relax the assumption that quantum channels are combined classically, showing that a quantum communication network where quantum channels are combined in a superposition of different orders can achieve tasks that are impossible in conventional quantum Shannon theory. In particular, we show that two identical copies of a completely depolarizing channel become able to transmit info","authors_text":"Daniel Ebler, Giulio Chiribella, Sina Salek","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-11-28T08:06:18Z","title":"Enhanced communication with the assistance of indefinite causal order"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.10165","kind":"arxiv","version":2},"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":"sha256:43da49e4e0118247961b21e62137651ce60a4fb4ab0ad6aba01cfb6fe41c2f90","target":"record","created_at":"2026-05-18T00:20:05Z","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":"dc7ad1088822d56d328bf7813d19977c7697d2171dfd961b0ddc2c46db45ad27","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-11-28T08:06:18Z","title_canon_sha256":"164cf26ef05bf325513dfb2fe1c24c2b5aaff529d1b4aad3b24ec21ee78fbc95"},"schema_version":"1.0","source":{"id":"1711.10165","kind":"arxiv","version":2}},"canonical_sha256":"427a33177efc333ab0cf496bb0fe8e5ad704c043455d085dd385be7bb2e78787","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"427a33177efc333ab0cf496bb0fe8e5ad704c043455d085dd385be7bb2e78787","first_computed_at":"2026-05-18T00:20:05.448925Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:20:05.448925Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MSojdJR/2Ey0Is5g7qbKqjo4GLQqraA+xMS7krI+WX0CIu3B/UlD94GSFuSgjoXgcK7DvDEGRwNser39m2ODBg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:20:05.449620Z","signed_message":"canonical_sha256_bytes"},"source_id":"1711.10165","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:43da49e4e0118247961b21e62137651ce60a4fb4ab0ad6aba01cfb6fe41c2f90","sha256:05bf497585ab9c777554d862f71b03f881b715ecbac3ae361f5d08c4c3a7983d"],"state_sha256":"8dc2dded8401841b9e7c97dc92a87d44f8e8aae8fadeb004667824b1382a99b3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0T/yLQJsi9wjXlQ4pcwtUTcu+gspyVquTerwZaNLMFG6ZPam/R0aBIYgrUuxXRtayY19Dnv9OyEAliPe+wnvBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-23T22:56:51.567434Z","bundle_sha256":"3ffa6c483c2d6e57edc49583ea6f12dafa3e16b54cbb8b20c6692ff94756e8c2"}}