{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:T6RTAQSOMKLPMP5HOBWZ2HSHND","short_pith_number":"pith:T6RTAQSO","canonical_record":{"source":{"id":"1708.05597","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-08-18T13:25:39Z","cross_cats_sorted":[],"title_canon_sha256":"535a718dfd680b447a86c79dbc1042312beec1ad9c75ea63b7cf305ea093d9fd","abstract_canon_sha256":"0e38be57c4b63bd0b8eced2cb01e1d252ee742bcc68f4c4959515a484e263cf4"},"schema_version":"1.0"},"canonical_sha256":"9fa330424e6296f63fa7706d9d1e4768f5c458814fdbe7872c5379e0a3d2a560","source":{"kind":"arxiv","id":"1708.05597","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.05597","created_at":"2026-05-18T00:12:24Z"},{"alias_kind":"arxiv_version","alias_value":"1708.05597v1","created_at":"2026-05-18T00:12:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.05597","created_at":"2026-05-18T00:12:24Z"},{"alias_kind":"pith_short_12","alias_value":"T6RTAQSOMKLP","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"T6RTAQSOMKLPMP5H","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"T6RTAQSO","created_at":"2026-05-18T12:31:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:T6RTAQSOMKLPMP5HOBWZ2HSHND","target":"record","payload":{"canonical_record":{"source":{"id":"1708.05597","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-08-18T13:25:39Z","cross_cats_sorted":[],"title_canon_sha256":"535a718dfd680b447a86c79dbc1042312beec1ad9c75ea63b7cf305ea093d9fd","abstract_canon_sha256":"0e38be57c4b63bd0b8eced2cb01e1d252ee742bcc68f4c4959515a484e263cf4"},"schema_version":"1.0"},"canonical_sha256":"9fa330424e6296f63fa7706d9d1e4768f5c458814fdbe7872c5379e0a3d2a560","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:12:24.981683Z","signature_b64":"pdbAqqCpcCAFQSAqjf75rtx1Y7aQLppPGAY+vqzS+89dmH8pcjsIMb4fVzAYJ3k8NmvxMPAjOX5L+vMWtVP2Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9fa330424e6296f63fa7706d9d1e4768f5c458814fdbe7872c5379e0a3d2a560","last_reissued_at":"2026-05-18T00:12:24.981017Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:12:24.981017Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1708.05597","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":"2026-05-18T00:12:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hUH0H/0lFXjE4vrSxnsleThzNldg0lNH7ua2ruFzT0yCxmjkNclWVxxhfCGgw/VCTTPBiY20fRZjN4+13ohtBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T18:45:09.741842Z"},"content_sha256":"48c6c0aec59461b7fbe0ba9677ce166b5d2ea8342baca7622724b30c07270f52","schema_version":"1.0","event_id":"sha256:48c6c0aec59461b7fbe0ba9677ce166b5d2ea8342baca7622724b30c07270f52"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:T6RTAQSOMKLPMP5HOBWZ2HSHND","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Determining quantum coherence with minimal resources","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Alessandro Toigo, Claudio Carmeli, Jussi Schultz, Sabrina Maniscalco, Teiko Heinosaari","submitted_at":"2017-08-18T13:25:39Z","abstract_excerpt":"We characterize minimal measurement setups for validating the quantum coherence of an unknown quantum state. We show that for a $d$-level system, the optimal strategy consists of measuring $d$ orthonormal bases such that each measured basis is mutually unbiased with respect to the reference basis, and together with the reference basis they form an informationally complete set of measurements. We show that, in general, any strategy capable of validating quantum coherence allows one to evaluate also the exact value of coherence. We then give an explicit construction of the optimal measurements f"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.05597","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":""},"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":"2026-05-18T00:12:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hz34AgE5m/gDf+U8rfFBpn6pcNJaGF/ne+hIQyQ/d9M90tkgpCfWYMp8OvMsfpeHfl2uTkpYEwtRjgEdEWtpBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T18:45:09.742634Z"},"content_sha256":"16159c3651fd4f36adaa746cc30391eb74a7d3203490980ed965c41c4806dd46","schema_version":"1.0","event_id":"sha256:16159c3651fd4f36adaa746cc30391eb74a7d3203490980ed965c41c4806dd46"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/T6RTAQSOMKLPMP5HOBWZ2HSHND/bundle.json","state_url":"https://pith.science/pith/T6RTAQSOMKLPMP5HOBWZ2HSHND/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/T6RTAQSOMKLPMP5HOBWZ2HSHND/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":"2026-05-25T18:45:09Z","links":{"resolver":"https://pith.science/pith/T6RTAQSOMKLPMP5HOBWZ2HSHND","bundle":"https://pith.science/pith/T6RTAQSOMKLPMP5HOBWZ2HSHND/bundle.json","state":"https://pith.science/pith/T6RTAQSOMKLPMP5HOBWZ2HSHND/state.json","well_known_bundle":"https://pith.science/.well-known/pith/T6RTAQSOMKLPMP5HOBWZ2HSHND/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:T6RTAQSOMKLPMP5HOBWZ2HSHND","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":"0e38be57c4b63bd0b8eced2cb01e1d252ee742bcc68f4c4959515a484e263cf4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-08-18T13:25:39Z","title_canon_sha256":"535a718dfd680b447a86c79dbc1042312beec1ad9c75ea63b7cf305ea093d9fd"},"schema_version":"1.0","source":{"id":"1708.05597","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.05597","created_at":"2026-05-18T00:12:24Z"},{"alias_kind":"arxiv_version","alias_value":"1708.05597v1","created_at":"2026-05-18T00:12:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.05597","created_at":"2026-05-18T00:12:24Z"},{"alias_kind":"pith_short_12","alias_value":"T6RTAQSOMKLP","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"T6RTAQSOMKLPMP5H","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"T6RTAQSO","created_at":"2026-05-18T12:31:43Z"}],"graph_snapshots":[{"event_id":"sha256:16159c3651fd4f36adaa746cc30391eb74a7d3203490980ed965c41c4806dd46","target":"graph","created_at":"2026-05-18T00:12:24Z","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":"We characterize minimal measurement setups for validating the quantum coherence of an unknown quantum state. We show that for a $d$-level system, the optimal strategy consists of measuring $d$ orthonormal bases such that each measured basis is mutually unbiased with respect to the reference basis, and together with the reference basis they form an informationally complete set of measurements. We show that, in general, any strategy capable of validating quantum coherence allows one to evaluate also the exact value of coherence. We then give an explicit construction of the optimal measurements f","authors_text":"Alessandro Toigo, Claudio Carmeli, Jussi Schultz, Sabrina Maniscalco, Teiko Heinosaari","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-08-18T13:25:39Z","title":"Determining quantum coherence with minimal resources"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.05597","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":"sha256:48c6c0aec59461b7fbe0ba9677ce166b5d2ea8342baca7622724b30c07270f52","target":"record","created_at":"2026-05-18T00:12:24Z","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":"0e38be57c4b63bd0b8eced2cb01e1d252ee742bcc68f4c4959515a484e263cf4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-08-18T13:25:39Z","title_canon_sha256":"535a718dfd680b447a86c79dbc1042312beec1ad9c75ea63b7cf305ea093d9fd"},"schema_version":"1.0","source":{"id":"1708.05597","kind":"arxiv","version":1}},"canonical_sha256":"9fa330424e6296f63fa7706d9d1e4768f5c458814fdbe7872c5379e0a3d2a560","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9fa330424e6296f63fa7706d9d1e4768f5c458814fdbe7872c5379e0a3d2a560","first_computed_at":"2026-05-18T00:12:24.981017Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:12:24.981017Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pdbAqqCpcCAFQSAqjf75rtx1Y7aQLppPGAY+vqzS+89dmH8pcjsIMb4fVzAYJ3k8NmvxMPAjOX5L+vMWtVP2Dw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:12:24.981683Z","signed_message":"canonical_sha256_bytes"},"source_id":"1708.05597","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:48c6c0aec59461b7fbe0ba9677ce166b5d2ea8342baca7622724b30c07270f52","sha256:16159c3651fd4f36adaa746cc30391eb74a7d3203490980ed965c41c4806dd46"],"state_sha256":"8ec45e9efc05d6638a5e50e656439a9d6b9a2bc8d221e55cea352ea0443a6d1a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NjJqvD82dl2wFiHX24BowSSxCayUdwvevSFUvav7eNhYTTz+FHxBItCV5usZHPAYV86hLudyqXBaQWN21k0+DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T18:45:09.746349Z","bundle_sha256":"034861aba921ff70b41fe8d6062326d626b0822d20bd519fbaf41dc3181c12fb"}}