{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:7UQMLKJAFS356ZCFCDRUHPUL3O","short_pith_number":"pith:7UQMLKJA","canonical_record":{"source":{"id":"2605.16093","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2026-05-15T15:49:14Z","cross_cats_sorted":[],"title_canon_sha256":"5fb6a5b0d07352a498ae6f6dec5f2a15acfce42af632955e70fd70735eb007ba","abstract_canon_sha256":"0f200661422b830765cd31e434ea721ae6ef2564279fcbd26b42e790c708f2ca"},"schema_version":"1.0"},"canonical_sha256":"fd20c5a9202cb7df644510e343be8bdb815cd2fddd39dc70641878bf563ed69c","source":{"kind":"arxiv","id":"2605.16093","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.16093","created_at":"2026-05-20T00:01:52Z"},{"alias_kind":"arxiv_version","alias_value":"2605.16093v1","created_at":"2026-05-20T00:01:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.16093","created_at":"2026-05-20T00:01:52Z"},{"alias_kind":"pith_short_12","alias_value":"7UQMLKJAFS35","created_at":"2026-05-20T00:01:52Z"},{"alias_kind":"pith_short_16","alias_value":"7UQMLKJAFS356ZCF","created_at":"2026-05-20T00:01:52Z"},{"alias_kind":"pith_short_8","alias_value":"7UQMLKJA","created_at":"2026-05-20T00:01:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:7UQMLKJAFS356ZCFCDRUHPUL3O","target":"record","payload":{"canonical_record":{"source":{"id":"2605.16093","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2026-05-15T15:49:14Z","cross_cats_sorted":[],"title_canon_sha256":"5fb6a5b0d07352a498ae6f6dec5f2a15acfce42af632955e70fd70735eb007ba","abstract_canon_sha256":"0f200661422b830765cd31e434ea721ae6ef2564279fcbd26b42e790c708f2ca"},"schema_version":"1.0"},"canonical_sha256":"fd20c5a9202cb7df644510e343be8bdb815cd2fddd39dc70641878bf563ed69c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-20T00:01:52.325256Z","signature_b64":"e9xYPZMGsAfg4NX/IE858OE3NR5J/BpDMfeTpxpU1t6XZhBwicVNGyf1HQQVnO6XaF+L9kR4Oew5WtQ3NX7FAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fd20c5a9202cb7df644510e343be8bdb815cd2fddd39dc70641878bf563ed69c","last_reissued_at":"2026-05-20T00:01:52.324470Z","signature_status":"signed_v1","first_computed_at":"2026-05-20T00:01:52.324470Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2605.16093","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":"2026-05-20T00:01:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VGgvUTJTrtYKOkbleQTJ/29SD6tkIqxZNg8N+OsJcPee9pNTWS+MjHNcZGCTKgd/X17l69EBzO0snd2ytAzCBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T01:28:30.899493Z"},"content_sha256":"c514abcbdc0ef4993654b23fe2462cc8af6915d06ae311825e0bcb338e1e9ef1","schema_version":"1.0","event_id":"sha256:c514abcbdc0ef4993654b23fe2462cc8af6915d06ae311825e0bcb338e1e9ef1"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:7UQMLKJAFS356ZCFCDRUHPUL3O","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Unbounded Communication Power of a Qubit","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Debarshi Das, Som Kanjilal, Souradeep Sasmal","submitted_at":"2026-05-15T15:49:14Z","abstract_excerpt":"Quantum mechanics enables information-processing advantages even at the level of a single qubit. A paradigmatic example is the 2$\\to$1 random access code (RAC), where a qubit outperforms a classical bit in retrieving encoded information. In the standard form, however, this quantum advantage is restricted to a single receiver, since decoding measurements inevitably destroy the encoded information. Contrary to this, we address how long the information encoded in a single qubit remains accessible even after multiple decoding, each with a quantum advantage. Introducing preparation distinguishabili"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.16093","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/2605.16093/integrity.json","findings":[],"available":true,"detectors_run":[{"name":"ai_meta_artifact","ran_at":"2026-05-19T17:33:38.863960Z","status":"skipped","version":"1.0.0","findings_count":0},{"name":"claim_evidence","ran_at":"2026-05-19T16:41:55.494775Z","status":"completed","version":"1.0.0","findings_count":0}],"snapshot_sha256":"d5487070216f693342d138f70922b81322630b214812e9f5eb2e214f8af0abd5"},"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":"2026-05-20T00:01:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3LbGZDXedsTqDtDl4eZRGcMLP+k5x6dyVaaYS4nQ0DoIfnfyUA6nQrXrwUdIoOqZ/8WK3ZuoOHu6CNbZPGPLCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-23T01:28:30.900210Z"},"content_sha256":"247ae484977a66a0b27d9cd50f42768a17528c0c3ea95e2b5d3d9d413f73f1e6","schema_version":"1.0","event_id":"sha256:247ae484977a66a0b27d9cd50f42768a17528c0c3ea95e2b5d3d9d413f73f1e6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7UQMLKJAFS356ZCFCDRUHPUL3O/bundle.json","state_url":"https://pith.science/pith/7UQMLKJAFS356ZCFCDRUHPUL3O/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7UQMLKJAFS356ZCFCDRUHPUL3O/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":"2026-05-23T01:28:30Z","links":{"resolver":"https://pith.science/pith/7UQMLKJAFS356ZCFCDRUHPUL3O","bundle":"https://pith.science/pith/7UQMLKJAFS356ZCFCDRUHPUL3O/bundle.json","state":"https://pith.science/pith/7UQMLKJAFS356ZCFCDRUHPUL3O/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7UQMLKJAFS356ZCFCDRUHPUL3O/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:7UQMLKJAFS356ZCFCDRUHPUL3O","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":"0f200661422b830765cd31e434ea721ae6ef2564279fcbd26b42e790c708f2ca","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2026-05-15T15:49:14Z","title_canon_sha256":"5fb6a5b0d07352a498ae6f6dec5f2a15acfce42af632955e70fd70735eb007ba"},"schema_version":"1.0","source":{"id":"2605.16093","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2605.16093","created_at":"2026-05-20T00:01:52Z"},{"alias_kind":"arxiv_version","alias_value":"2605.16093v1","created_at":"2026-05-20T00:01:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2605.16093","created_at":"2026-05-20T00:01:52Z"},{"alias_kind":"pith_short_12","alias_value":"7UQMLKJAFS35","created_at":"2026-05-20T00:01:52Z"},{"alias_kind":"pith_short_16","alias_value":"7UQMLKJAFS356ZCF","created_at":"2026-05-20T00:01:52Z"},{"alias_kind":"pith_short_8","alias_value":"7UQMLKJA","created_at":"2026-05-20T00:01:52Z"}],"graph_snapshots":[{"event_id":"sha256:247ae484977a66a0b27d9cd50f42768a17528c0c3ea95e2b5d3d9d413f73f1e6","target":"graph","created_at":"2026-05-20T00:01:52Z","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":[{"findings_count":0,"name":"ai_meta_artifact","ran_at":"2026-05-19T17:33:38.863960Z","status":"skipped","version":"1.0.0"},{"findings_count":0,"name":"claim_evidence","ran_at":"2026-05-19T16:41:55.494775Z","status":"completed","version":"1.0.0"}],"endpoint":"/pith/2605.16093/integrity.json","findings":[],"snapshot_sha256":"d5487070216f693342d138f70922b81322630b214812e9f5eb2e214f8af0abd5","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Quantum mechanics enables information-processing advantages even at the level of a single qubit. A paradigmatic example is the 2$\\to$1 random access code (RAC), where a qubit outperforms a classical bit in retrieving encoded information. In the standard form, however, this quantum advantage is restricted to a single receiver, since decoding measurements inevitably destroy the encoded information. Contrary to this, we address how long the information encoded in a single qubit remains accessible even after multiple decoding, each with a quantum advantage. Introducing preparation distinguishabili","authors_text":"Debarshi Das, Som Kanjilal, Souradeep Sasmal","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2026-05-15T15:49:14Z","title":"Unbounded Communication Power of a Qubit"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2605.16093","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:c514abcbdc0ef4993654b23fe2462cc8af6915d06ae311825e0bcb338e1e9ef1","target":"record","created_at":"2026-05-20T00:01:52Z","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":"0f200661422b830765cd31e434ea721ae6ef2564279fcbd26b42e790c708f2ca","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2026-05-15T15:49:14Z","title_canon_sha256":"5fb6a5b0d07352a498ae6f6dec5f2a15acfce42af632955e70fd70735eb007ba"},"schema_version":"1.0","source":{"id":"2605.16093","kind":"arxiv","version":1}},"canonical_sha256":"fd20c5a9202cb7df644510e343be8bdb815cd2fddd39dc70641878bf563ed69c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fd20c5a9202cb7df644510e343be8bdb815cd2fddd39dc70641878bf563ed69c","first_computed_at":"2026-05-20T00:01:52.324470Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-20T00:01:52.324470Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"e9xYPZMGsAfg4NX/IE858OE3NR5J/BpDMfeTpxpU1t6XZhBwicVNGyf1HQQVnO6XaF+L9kR4Oew5WtQ3NX7FAA==","signature_status":"signed_v1","signed_at":"2026-05-20T00:01:52.325256Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.16093","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c514abcbdc0ef4993654b23fe2462cc8af6915d06ae311825e0bcb338e1e9ef1","sha256:247ae484977a66a0b27d9cd50f42768a17528c0c3ea95e2b5d3d9d413f73f1e6"],"state_sha256":"542a9907f6d49b3653fc9d7a065bb67cc61d3b23a96392c40b29f45c4d8d52dc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"f6JMmgSomwU49b0RgZ7qav1FzD8MzVLpTl7pCS5eXA41xtm9vLmedsPCYa3Eq6XnQm7004MJpC8FB0BymZXnDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-23T01:28:30.903617Z","bundle_sha256":"32fc189e249d911621ed245c38baec40c1c9f35977b4c2d9618b007247a2ed8c"}}