{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:37XOL3VNFLAQBW3DSUZU5YW6NJ","short_pith_number":"pith:37XOL3VN","canonical_record":{"source":{"id":"2011.01259","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-11-02T19:02:28Z","cross_cats_sorted":[],"title_canon_sha256":"b64b56a5753ab104e4cfc161871ac24ac2f029bcd1dbd151547e080fff47cec0","abstract_canon_sha256":"96f8c270833256db67bde6cef1fd75ec1883e75a10ca1c9e3a1bf02c7001c688"},"schema_version":"1.0"},"canonical_sha256":"dfeee5eead2ac100db6395334ee2de6a5d9425138c354e9fd60dba0d3c70f097","source":{"kind":"arxiv","id":"2011.01259","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2011.01259","created_at":"2026-07-05T02:29:34Z"},{"alias_kind":"arxiv_version","alias_value":"2011.01259v1","created_at":"2026-07-05T02:29:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.01259","created_at":"2026-07-05T02:29:34Z"},{"alias_kind":"pith_short_12","alias_value":"37XOL3VNFLAQ","created_at":"2026-07-05T02:29:34Z"},{"alias_kind":"pith_short_16","alias_value":"37XOL3VNFLAQBW3D","created_at":"2026-07-05T02:29:34Z"},{"alias_kind":"pith_short_8","alias_value":"37XOL3VN","created_at":"2026-07-05T02:29:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:37XOL3VNFLAQBW3DSUZU5YW6NJ","target":"record","payload":{"canonical_record":{"source":{"id":"2011.01259","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-11-02T19:02:28Z","cross_cats_sorted":[],"title_canon_sha256":"b64b56a5753ab104e4cfc161871ac24ac2f029bcd1dbd151547e080fff47cec0","abstract_canon_sha256":"96f8c270833256db67bde6cef1fd75ec1883e75a10ca1c9e3a1bf02c7001c688"},"schema_version":"1.0"},"canonical_sha256":"dfeee5eead2ac100db6395334ee2de6a5d9425138c354e9fd60dba0d3c70f097","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:29:34.487673Z","signature_b64":"jQQ70wE739jfh6VsgP9Jw1PydCmV7agKTeZHpwZDEOV4XSUnUwwGpfjCHsWVfsNjmRQyoZK6ZlviIxg2YZZ+DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"dfeee5eead2ac100db6395334ee2de6a5d9425138c354e9fd60dba0d3c70f097","last_reissued_at":"2026-07-05T02:29:34.487241Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:29:34.487241Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2011.01259","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":"2026-07-05T02:29:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"A7eQhsVA7zRh915JJfI/3TecEIO+2UA1g1M8cTLg0e3EsqeZubhgJIC8tO0Q0QXQdGrT7UBfIWAFZbuSYO7eDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-08T06:06:32.887400Z"},"content_sha256":"1e7248c24f39538809a2076ab5a09ee2e28fc5d958f6cf3689520f599d35bf2c","schema_version":"1.0","event_id":"sha256:1e7248c24f39538809a2076ab5a09ee2e28fc5d958f6cf3689520f599d35bf2c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:37XOL3VNFLAQBW3DSUZU5YW6NJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Optimal Measurement of Field Properties with Quantum Sensor Networks","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Alexey V. Gorshkov, Igor Boettcher, Jacob Bringewatt, Przemyslaw Bienias, Timothy Qian","submitted_at":"2020-11-02T19:02:28Z","abstract_excerpt":"We consider a quantum sensor network of qubit sensors coupled to a field $f(\\vec{x};\\vec{\\theta})$ analytically parameterized by the vector of parameters $\\vec\\theta$. The qubit sensors are fixed at positions $\\vec{x}_1,\\dots,\\vec{x}_d$. While the functional form of $f(\\vec{x};\\vec{\\theta})$ is known, the parameters $\\vec{\\theta}$ are not. We derive saturable bounds on the precision of measuring an arbitrary analytic function $q(\\vec{\\theta})$ of these parameters and construct the optimal protocols that achieve these bounds. Our results are obtained from a combination of techniques from quantu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.01259","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/2011.01259/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":"2026-07-05T02:29:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mk2K/CKVVmKN7QKanKVm29XDs8kOOX7qhoCiEFAUpBhl5kqrkA2cjnDDdWD5p6Tkh8BIGxoerod8E6/ocln7Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-08T06:06:32.887778Z"},"content_sha256":"a5b749770d097eedca7dd5877e9016615796d42cf191430fe592aef207cab48c","schema_version":"1.0","event_id":"sha256:a5b749770d097eedca7dd5877e9016615796d42cf191430fe592aef207cab48c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/37XOL3VNFLAQBW3DSUZU5YW6NJ/bundle.json","state_url":"https://pith.science/pith/37XOL3VNFLAQBW3DSUZU5YW6NJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/37XOL3VNFLAQBW3DSUZU5YW6NJ/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":"2026-07-08T06:06:32Z","links":{"resolver":"https://pith.science/pith/37XOL3VNFLAQBW3DSUZU5YW6NJ","bundle":"https://pith.science/pith/37XOL3VNFLAQBW3DSUZU5YW6NJ/bundle.json","state":"https://pith.science/pith/37XOL3VNFLAQBW3DSUZU5YW6NJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/37XOL3VNFLAQBW3DSUZU5YW6NJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:37XOL3VNFLAQBW3DSUZU5YW6NJ","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":"96f8c270833256db67bde6cef1fd75ec1883e75a10ca1c9e3a1bf02c7001c688","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-11-02T19:02:28Z","title_canon_sha256":"b64b56a5753ab104e4cfc161871ac24ac2f029bcd1dbd151547e080fff47cec0"},"schema_version":"1.0","source":{"id":"2011.01259","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2011.01259","created_at":"2026-07-05T02:29:34Z"},{"alias_kind":"arxiv_version","alias_value":"2011.01259v1","created_at":"2026-07-05T02:29:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.01259","created_at":"2026-07-05T02:29:34Z"},{"alias_kind":"pith_short_12","alias_value":"37XOL3VNFLAQ","created_at":"2026-07-05T02:29:34Z"},{"alias_kind":"pith_short_16","alias_value":"37XOL3VNFLAQBW3D","created_at":"2026-07-05T02:29:34Z"},{"alias_kind":"pith_short_8","alias_value":"37XOL3VN","created_at":"2026-07-05T02:29:34Z"}],"graph_snapshots":[{"event_id":"sha256:a5b749770d097eedca7dd5877e9016615796d42cf191430fe592aef207cab48c","target":"graph","created_at":"2026-07-05T02:29:34Z","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/2011.01259/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We consider a quantum sensor network of qubit sensors coupled to a field $f(\\vec{x};\\vec{\\theta})$ analytically parameterized by the vector of parameters $\\vec\\theta$. The qubit sensors are fixed at positions $\\vec{x}_1,\\dots,\\vec{x}_d$. While the functional form of $f(\\vec{x};\\vec{\\theta})$ is known, the parameters $\\vec{\\theta}$ are not. We derive saturable bounds on the precision of measuring an arbitrary analytic function $q(\\vec{\\theta})$ of these parameters and construct the optimal protocols that achieve these bounds. Our results are obtained from a combination of techniques from quantu","authors_text":"Alexey V. Gorshkov, Igor Boettcher, Jacob Bringewatt, Przemyslaw Bienias, Timothy Qian","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-11-02T19:02:28Z","title":"Optimal Measurement of Field Properties with Quantum Sensor Networks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.01259","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":"sha256:1e7248c24f39538809a2076ab5a09ee2e28fc5d958f6cf3689520f599d35bf2c","target":"record","created_at":"2026-07-05T02:29:34Z","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":"96f8c270833256db67bde6cef1fd75ec1883e75a10ca1c9e3a1bf02c7001c688","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-11-02T19:02:28Z","title_canon_sha256":"b64b56a5753ab104e4cfc161871ac24ac2f029bcd1dbd151547e080fff47cec0"},"schema_version":"1.0","source":{"id":"2011.01259","kind":"arxiv","version":1}},"canonical_sha256":"dfeee5eead2ac100db6395334ee2de6a5d9425138c354e9fd60dba0d3c70f097","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"dfeee5eead2ac100db6395334ee2de6a5d9425138c354e9fd60dba0d3c70f097","first_computed_at":"2026-07-05T02:29:34.487241Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:29:34.487241Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jQQ70wE739jfh6VsgP9Jw1PydCmV7agKTeZHpwZDEOV4XSUnUwwGpfjCHsWVfsNjmRQyoZK6ZlviIxg2YZZ+DQ==","signature_status":"signed_v1","signed_at":"2026-07-05T02:29:34.487673Z","signed_message":"canonical_sha256_bytes"},"source_id":"2011.01259","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1e7248c24f39538809a2076ab5a09ee2e28fc5d958f6cf3689520f599d35bf2c","sha256:a5b749770d097eedca7dd5877e9016615796d42cf191430fe592aef207cab48c"],"state_sha256":"7375dee7ff606bc8a32994210b2e27bd969615534b494d51c6230e2790976dd4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cUMUjsJNI2Jxv6nGrsG0HhQE3X1tZmcnwh6fSkZoQPuOdfLQrUqHf0Rzde10c89O8vMwSUL2SPkLpjjFNnqRBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-08T06:06:32.890178Z","bundle_sha256":"86ac6f702a9a4c2278b020d946aae9a8aa0c0a9147e6f8e735a4db61f4e75ad3"}}