{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:FFNC3KGU4ZHA3S3KCIOYJH7GEV","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":"d6a6444a9d99a24303f3c9a2f4f3444792411617590c73f60ba772b1716efd81","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-03-20T21:36:05Z","title_canon_sha256":"3663c189b0ff4b1c14617ed4f0d645802390ebf1a26bdae53ac811a1cb9fc0a5"},"schema_version":"1.0","source":{"id":"1603.06274","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1603.06274","created_at":"2026-05-18T01:18:49Z"},{"alias_kind":"arxiv_version","alias_value":"1603.06274v1","created_at":"2026-05-18T01:18:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1603.06274","created_at":"2026-05-18T01:18:49Z"},{"alias_kind":"pith_short_12","alias_value":"FFNC3KGU4ZHA","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_16","alias_value":"FFNC3KGU4ZHA3S3K","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_8","alias_value":"FFNC3KGU","created_at":"2026-05-18T12:30:15Z"}],"graph_snapshots":[{"event_id":"sha256:d1aeb2e6f89c2bfb836e881a68592d9132e602dc82c3e50e0b8d5034a094eb35","target":"graph","created_at":"2026-05-18T01:18:49Z","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":"It is generally assumed that on-off detectors with single-photon sensitivity cannot distinguish coherent states from phase-mixed coherent states without some form of quadrature-based tomography. Here, we show that it is theoretically possible to distinguish these states without quadrature-based methods by comparing the vacuum probability of one output port of a variable beam splitter (VBS) that has two different phase-mixed coherent states as its inputs to the well-known case of dual coherent-state inputs. As an application, a method is proposed to test whether a laser field is in a coherent s","authors_text":"Samuel R. Hedemann","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-03-20T21:36:05Z","title":"Distinguishing Coherent States from Phase-Mixed Coherent States with Only a Variable Beam Splitter and Single-Photon Detector, In Principle"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1603.06274","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:e13d2dfc2bc5f5e66459b28a23414de3cc9d8f9342b83733f1ef0da4795323d1","target":"record","created_at":"2026-05-18T01:18:49Z","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":"d6a6444a9d99a24303f3c9a2f4f3444792411617590c73f60ba772b1716efd81","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2016-03-20T21:36:05Z","title_canon_sha256":"3663c189b0ff4b1c14617ed4f0d645802390ebf1a26bdae53ac811a1cb9fc0a5"},"schema_version":"1.0","source":{"id":"1603.06274","kind":"arxiv","version":1}},"canonical_sha256":"295a2da8d4e64e0dcb6a121d849fe625516d3d4be2a1ed9a68d0d7c0f5ba9fc0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"295a2da8d4e64e0dcb6a121d849fe625516d3d4be2a1ed9a68d0d7c0f5ba9fc0","first_computed_at":"2026-05-18T01:18:49.882626Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:18:49.882626Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iv0lc4C1M6nlQToW19K7b97GciYz6VIP8a3liDMzCoqynEy/BhRReE4IBucDSfkaSedOTbNNZ9pZqzsOnc6oCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:18:49.883195Z","signed_message":"canonical_sha256_bytes"},"source_id":"1603.06274","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e13d2dfc2bc5f5e66459b28a23414de3cc9d8f9342b83733f1ef0da4795323d1","sha256:d1aeb2e6f89c2bfb836e881a68592d9132e602dc82c3e50e0b8d5034a094eb35"],"state_sha256":"f81ccef8ae65dd328e1cd9af047f440ba2920c14816e2bba5e6c9791991a054e"}