{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:IMGEH6O5PUR2JW77B7DVJP3B3O","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":"ff911618e2d0b93562f5af4aacf97f7d6dbe4d42c302ee5977c2292f6ef3ad21","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-04-20T05:40:43Z","title_canon_sha256":"ac1c23e1a8e4311d8378d43c67302cf2bcd5461e4b1a214814992215ea845d14"},"schema_version":"1.0","source":{"id":"2504.14499","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2504.14499","created_at":"2026-07-07T01:15:54Z"},{"alias_kind":"arxiv_version","alias_value":"2504.14499v3","created_at":"2026-07-07T01:15:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2504.14499","created_at":"2026-07-07T01:15:54Z"},{"alias_kind":"pith_short_12","alias_value":"IMGEH6O5PUR2","created_at":"2026-07-07T01:15:54Z"},{"alias_kind":"pith_short_16","alias_value":"IMGEH6O5PUR2JW77","created_at":"2026-07-07T01:15:54Z"},{"alias_kind":"pith_short_8","alias_value":"IMGEH6O5","created_at":"2026-07-07T01:15:54Z"}],"graph_snapshots":[{"event_id":"sha256:26fed663bbdbecc52d00a327dc5c75b842ca7904fa7e9c0cb03dd6cb57e92ec2","target":"graph","created_at":"2026-07-07T01:15:54Z","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/2504.14499/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"There have been many instances where the maximally entangled state as a probe acts better than the product and the non-maximally entangled states in the task of distinguishing quantum channels. We provide a proof that for single-shot discrimination of two unitary channels, entangled and product states are operationally equivalent. But we identify pairs of unitaries that are perfectly distinguishable using a non-maximally entangled state, but not with a maximally entangled one. This contrast becomes more pronounced when the number of unitaries exceeds two. In every dimension $\\geqslant 3$, we s","authors_text":"Anandamay Das Bhowmik, Debashis Saha, Satyaki Manna","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-04-20T05:40:43Z","title":"Limitation of maximally entangled probes for single-shot distinguishability of unitaries"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2504.14499","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:b3f99dd4fec1ccf1fb85d746059c21765b42603015e29c94ff9cc1c723f4d513","target":"record","created_at":"2026-07-07T01:15:54Z","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":"ff911618e2d0b93562f5af4aacf97f7d6dbe4d42c302ee5977c2292f6ef3ad21","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-04-20T05:40:43Z","title_canon_sha256":"ac1c23e1a8e4311d8378d43c67302cf2bcd5461e4b1a214814992215ea845d14"},"schema_version":"1.0","source":{"id":"2504.14499","kind":"arxiv","version":3}},"canonical_sha256":"430c43f9dd7d23a4dbff0fc754bf61dbab1fc214c7d48b72726f7468f88739d3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"430c43f9dd7d23a4dbff0fc754bf61dbab1fc214c7d48b72726f7468f88739d3","first_computed_at":"2026-07-07T01:15:54.206346Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-07T01:15:54.206346Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jwSpEUg7dbBWSHIxisGYE9ttvQ/yhIwEdRZfuLOfYqbix7RWntPG5WEFUclZoNWB+xvjJyGphfFjZQXbpAUhDQ==","signature_status":"signed_v1","signed_at":"2026-07-07T01:15:54.207254Z","signed_message":"canonical_sha256_bytes"},"source_id":"2504.14499","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b3f99dd4fec1ccf1fb85d746059c21765b42603015e29c94ff9cc1c723f4d513","sha256:26fed663bbdbecc52d00a327dc5c75b842ca7904fa7e9c0cb03dd6cb57e92ec2"],"state_sha256":"7e857cabf61189f2efee2715cc092cfecc170c2e90b11d313e37d761a1743fac"}