{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:LFIFPV7GXVDOC7OUBQACZM4CPJ","short_pith_number":"pith:LFIFPV7G","canonical_record":{"source":{"id":"2404.19216","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2024-04-30T02:33:37Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"18cb333777c157cb7e32e93c29edb35bbe8aa1bb25afae7de8968dc0e7b59e89","abstract_canon_sha256":"6cbc8016a3bb370a892eb87ca97c97ff6f2e5ec3235a025ba8551a8f93e27485"},"schema_version":"1.0"},"canonical_sha256":"595057d7e6bd46e17dd40c002cb3827a5ccc24b4a83210a24506f85ae2263f5f","source":{"kind":"arxiv","id":"2404.19216","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2404.19216","created_at":"2026-07-05T09:01:33Z"},{"alias_kind":"arxiv_version","alias_value":"2404.19216v1","created_at":"2026-07-05T09:01:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.19216","created_at":"2026-07-05T09:01:33Z"},{"alias_kind":"pith_short_12","alias_value":"LFIFPV7GXVDO","created_at":"2026-07-05T09:01:33Z"},{"alias_kind":"pith_short_16","alias_value":"LFIFPV7GXVDOC7OU","created_at":"2026-07-05T09:01:33Z"},{"alias_kind":"pith_short_8","alias_value":"LFIFPV7G","created_at":"2026-07-05T09:01:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:LFIFPV7GXVDOC7OUBQACZM4CPJ","target":"record","payload":{"canonical_record":{"source":{"id":"2404.19216","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2024-04-30T02:33:37Z","cross_cats_sorted":["quant-ph"],"title_canon_sha256":"18cb333777c157cb7e32e93c29edb35bbe8aa1bb25afae7de8968dc0e7b59e89","abstract_canon_sha256":"6cbc8016a3bb370a892eb87ca97c97ff6f2e5ec3235a025ba8551a8f93e27485"},"schema_version":"1.0"},"canonical_sha256":"595057d7e6bd46e17dd40c002cb3827a5ccc24b4a83210a24506f85ae2263f5f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:01:33.749077Z","signature_b64":"TE7G9O4pgT46WmjnrjVfqiEuNFR04eBIXDtTejK+XJOrLVBQrTcMSUreW8JlczKt/6RaFamVoCrjh06+xz9oCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"595057d7e6bd46e17dd40c002cb3827a5ccc24b4a83210a24506f85ae2263f5f","last_reissued_at":"2026-07-05T09:01:33.748512Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:01:33.748512Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2404.19216","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":"2026-07-05T09:01:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"b2FfkQZetB1ol2Pq9WoGwpYzeh/4DmZCo9nk/b8QUNOb9GfmlOwrPXfKo/3Rl3KMES/vUz85qfPZ2R87Y31xCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T16:24:07.514191Z"},"content_sha256":"13e28ea736d713cefafc5c1f0aadc7f899c611b701469992d6845144848a56e8","schema_version":"1.0","event_id":"sha256:13e28ea736d713cefafc5c1f0aadc7f899c611b701469992d6845144848a56e8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:LFIFPV7GXVDOC7OUBQACZM4CPJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Optimal quantum strategy for locating Unruh channels","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"gr-qc","authors_text":"Cuihong Wen, Jieci Wang, Qianqian Liu, Tonghua Liu","submitted_at":"2024-04-30T02:33:37Z","abstract_excerpt":"From the perspective of quantum information theory, the effect of Unruh radiation on a two-level accelerated detector can be modeled as a quantum channel. In this work, we employ the tools of channel-position finding to locate Unruh channels. The signal-idler and idler-free protocols are explored to determine the position of the target Unruh channel within a sequence of background channels. We derive the fidelity-based bounds for the ultimate error probability of each strategy and obtain the conditions where the signal-idler protocol is superior to the protocol involving idler-free states. It "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.19216","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/2404.19216/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":"2026-07-05T09:01:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PmQSWNTAGzQiuR0IO3Z70cS3l5cSSGKO3azPVvMFD09poaKcArrFnhUojvv941V4BfSsbotPErpJZY1QUaaaBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T16:24:07.514699Z"},"content_sha256":"80546aa3004bd04edf55ec35315198dd7471bd643d8d660b7be3ddfb6de6aa04","schema_version":"1.0","event_id":"sha256:80546aa3004bd04edf55ec35315198dd7471bd643d8d660b7be3ddfb6de6aa04"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LFIFPV7GXVDOC7OUBQACZM4CPJ/bundle.json","state_url":"https://pith.science/pith/LFIFPV7GXVDOC7OUBQACZM4CPJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LFIFPV7GXVDOC7OUBQACZM4CPJ/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":"2026-08-07T16:24:07Z","links":{"resolver":"https://pith.science/pith/LFIFPV7GXVDOC7OUBQACZM4CPJ","bundle":"https://pith.science/pith/LFIFPV7GXVDOC7OUBQACZM4CPJ/bundle.json","state":"https://pith.science/pith/LFIFPV7GXVDOC7OUBQACZM4CPJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LFIFPV7GXVDOC7OUBQACZM4CPJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:LFIFPV7GXVDOC7OUBQACZM4CPJ","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":"6cbc8016a3bb370a892eb87ca97c97ff6f2e5ec3235a025ba8551a8f93e27485","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2024-04-30T02:33:37Z","title_canon_sha256":"18cb333777c157cb7e32e93c29edb35bbe8aa1bb25afae7de8968dc0e7b59e89"},"schema_version":"1.0","source":{"id":"2404.19216","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2404.19216","created_at":"2026-07-05T09:01:33Z"},{"alias_kind":"arxiv_version","alias_value":"2404.19216v1","created_at":"2026-07-05T09:01:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.19216","created_at":"2026-07-05T09:01:33Z"},{"alias_kind":"pith_short_12","alias_value":"LFIFPV7GXVDO","created_at":"2026-07-05T09:01:33Z"},{"alias_kind":"pith_short_16","alias_value":"LFIFPV7GXVDOC7OU","created_at":"2026-07-05T09:01:33Z"},{"alias_kind":"pith_short_8","alias_value":"LFIFPV7G","created_at":"2026-07-05T09:01:33Z"}],"graph_snapshots":[{"event_id":"sha256:80546aa3004bd04edf55ec35315198dd7471bd643d8d660b7be3ddfb6de6aa04","target":"graph","created_at":"2026-07-05T09:01:33Z","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/2404.19216/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"From the perspective of quantum information theory, the effect of Unruh radiation on a two-level accelerated detector can be modeled as a quantum channel. In this work, we employ the tools of channel-position finding to locate Unruh channels. The signal-idler and idler-free protocols are explored to determine the position of the target Unruh channel within a sequence of background channels. We derive the fidelity-based bounds for the ultimate error probability of each strategy and obtain the conditions where the signal-idler protocol is superior to the protocol involving idler-free states. It ","authors_text":"Cuihong Wen, Jieci Wang, Qianqian Liu, Tonghua Liu","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2024-04-30T02:33:37Z","title":"Optimal quantum strategy for locating Unruh channels"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.19216","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":"sha256:13e28ea736d713cefafc5c1f0aadc7f899c611b701469992d6845144848a56e8","target":"record","created_at":"2026-07-05T09:01:33Z","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":"6cbc8016a3bb370a892eb87ca97c97ff6f2e5ec3235a025ba8551a8f93e27485","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2024-04-30T02:33:37Z","title_canon_sha256":"18cb333777c157cb7e32e93c29edb35bbe8aa1bb25afae7de8968dc0e7b59e89"},"schema_version":"1.0","source":{"id":"2404.19216","kind":"arxiv","version":1}},"canonical_sha256":"595057d7e6bd46e17dd40c002cb3827a5ccc24b4a83210a24506f85ae2263f5f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"595057d7e6bd46e17dd40c002cb3827a5ccc24b4a83210a24506f85ae2263f5f","first_computed_at":"2026-07-05T09:01:33.748512Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:01:33.748512Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"TE7G9O4pgT46WmjnrjVfqiEuNFR04eBIXDtTejK+XJOrLVBQrTcMSUreW8JlczKt/6RaFamVoCrjh06+xz9oCw==","signature_status":"signed_v1","signed_at":"2026-07-05T09:01:33.749077Z","signed_message":"canonical_sha256_bytes"},"source_id":"2404.19216","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:13e28ea736d713cefafc5c1f0aadc7f899c611b701469992d6845144848a56e8","sha256:80546aa3004bd04edf55ec35315198dd7471bd643d8d660b7be3ddfb6de6aa04"],"state_sha256":"cf60f680a8f78e0c6efd10b95e4ebb7006be46a8a8c1fd89d4f827da7d4a3de0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nx4i8eror2dvwc6r4opu1D3Ge7OcVCZ2/QUJgbs5Z2GfnuXNPM61PvqeK9LnznPakwsD2zZGVr1M2qaRMNjPCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T16:24:07.518552Z","bundle_sha256":"568797bf707d2fa50a1e09f38e8e0caf32bb7cf2e34cd30c507c298afdd565c6"}}