{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:SSOQND46SCFCBP2V2BIU4SZ4IX","short_pith_number":"pith:SSOQND46","canonical_record":{"source":{"id":"1805.00667","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-05-02T08:21:06Z","cross_cats_sorted":[],"title_canon_sha256":"90d76061bfd1b57931a5d616d921ea53b0a9e8a921e398c098a2a1478fc5b6c4","abstract_canon_sha256":"3b46eb47144439c50a001d012ee64fe32d49da12f8e5e98b8e284774c7e3647e"},"schema_version":"1.0"},"canonical_sha256":"949d068f9e908a20bf55d0514e4b3c45d66aa4c6bb0f18e58fb8d4af26358d97","source":{"kind":"arxiv","id":"1805.00667","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.00667","created_at":"2026-05-18T00:04:07Z"},{"alias_kind":"arxiv_version","alias_value":"1805.00667v2","created_at":"2026-05-18T00:04:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.00667","created_at":"2026-05-18T00:04:07Z"},{"alias_kind":"pith_short_12","alias_value":"SSOQND46SCFC","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_16","alias_value":"SSOQND46SCFCBP2V","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_8","alias_value":"SSOQND46","created_at":"2026-05-18T12:32:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:SSOQND46SCFCBP2V2BIU4SZ4IX","target":"record","payload":{"canonical_record":{"source":{"id":"1805.00667","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-05-02T08:21:06Z","cross_cats_sorted":[],"title_canon_sha256":"90d76061bfd1b57931a5d616d921ea53b0a9e8a921e398c098a2a1478fc5b6c4","abstract_canon_sha256":"3b46eb47144439c50a001d012ee64fe32d49da12f8e5e98b8e284774c7e3647e"},"schema_version":"1.0"},"canonical_sha256":"949d068f9e908a20bf55d0514e4b3c45d66aa4c6bb0f18e58fb8d4af26358d97","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:04:07.729477Z","signature_b64":"x5Ji2ErlN+LNeAdHCqhP6bhiVLEG0VBFBWswYnVQg1r80BpGzzpOXTKbcqI3dvhjJEr3EvXe6eGvuS1nu4RBBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"949d068f9e908a20bf55d0514e4b3c45d66aa4c6bb0f18e58fb8d4af26358d97","last_reissued_at":"2026-05-18T00:04:07.728906Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:04:07.728906Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1805.00667","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:04:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"npmN9exQ8dh7qgLzlvXWma5hH+GFxsNGSMUnEZnOp2vI0j3IC/QZb93TyJaLwo3dvwFuAYrx/dhKUM2CpREgBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T17:51:03.734959Z"},"content_sha256":"3dcf206b29e2d89a742564d713c2a9605945ecdd17357b6154d97aad072159e5","schema_version":"1.0","event_id":"sha256:3dcf206b29e2d89a742564d713c2a9605945ecdd17357b6154d97aad072159e5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:SSOQND46SCFCBP2V2BIU4SZ4IX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Strengthening weak measurements of qubit out-of-time-order correlators","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Jos\\'e Ra\\'ul Gonz\\'alez Alonso, Justin Dressel, Mordecai Waegell, Nicole Yunger Halpern","submitted_at":"2018-05-02T08:21:06Z","abstract_excerpt":"For systems of controllable qubits, we provide a method for experimentally obtaining a useful class of multitime correlators using sequential generalized measurements of arbitrary strength. Specifically, if a correlator can be expressed as an average of nested (anti)commutators of operators that square to the identity, then that correlator can be determined exactly from the average of a measurement sequence. As a relevant example, we provide quantum circuits for measuring multiqubit out-of-time-order correlators using optimized control-Z or ZX-90 two-qubit gates common in superconducting trans"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.00667","kind":"arxiv","version":2},"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":"2026-05-18T00:04:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AvtuW5+SQ+bpZ8YNX3A0mt6G3rbtneklZZMzkyUvzYClIo4M2ZGJLZTyd+4oDImayAp/bBB+o2wJ0aJv0UqEAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T17:51:03.735310Z"},"content_sha256":"9e22820663056f5d0af5aa6d49a685cd478a2d3f2ca732a21a0b98ddf35be2d9","schema_version":"1.0","event_id":"sha256:9e22820663056f5d0af5aa6d49a685cd478a2d3f2ca732a21a0b98ddf35be2d9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SSOQND46SCFCBP2V2BIU4SZ4IX/bundle.json","state_url":"https://pith.science/pith/SSOQND46SCFCBP2V2BIU4SZ4IX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SSOQND46SCFCBP2V2BIU4SZ4IX/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":"2026-06-03T17:51:03Z","links":{"resolver":"https://pith.science/pith/SSOQND46SCFCBP2V2BIU4SZ4IX","bundle":"https://pith.science/pith/SSOQND46SCFCBP2V2BIU4SZ4IX/bundle.json","state":"https://pith.science/pith/SSOQND46SCFCBP2V2BIU4SZ4IX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SSOQND46SCFCBP2V2BIU4SZ4IX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:SSOQND46SCFCBP2V2BIU4SZ4IX","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":"3b46eb47144439c50a001d012ee64fe32d49da12f8e5e98b8e284774c7e3647e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-05-02T08:21:06Z","title_canon_sha256":"90d76061bfd1b57931a5d616d921ea53b0a9e8a921e398c098a2a1478fc5b6c4"},"schema_version":"1.0","source":{"id":"1805.00667","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.00667","created_at":"2026-05-18T00:04:07Z"},{"alias_kind":"arxiv_version","alias_value":"1805.00667v2","created_at":"2026-05-18T00:04:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.00667","created_at":"2026-05-18T00:04:07Z"},{"alias_kind":"pith_short_12","alias_value":"SSOQND46SCFC","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_16","alias_value":"SSOQND46SCFCBP2V","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_8","alias_value":"SSOQND46","created_at":"2026-05-18T12:32:53Z"}],"graph_snapshots":[{"event_id":"sha256:9e22820663056f5d0af5aa6d49a685cd478a2d3f2ca732a21a0b98ddf35be2d9","target":"graph","created_at":"2026-05-18T00:04:07Z","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":"For systems of controllable qubits, we provide a method for experimentally obtaining a useful class of multitime correlators using sequential generalized measurements of arbitrary strength. Specifically, if a correlator can be expressed as an average of nested (anti)commutators of operators that square to the identity, then that correlator can be determined exactly from the average of a measurement sequence. As a relevant example, we provide quantum circuits for measuring multiqubit out-of-time-order correlators using optimized control-Z or ZX-90 two-qubit gates common in superconducting trans","authors_text":"Jos\\'e Ra\\'ul Gonz\\'alez Alonso, Justin Dressel, Mordecai Waegell, Nicole Yunger Halpern","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-05-02T08:21:06Z","title":"Strengthening weak measurements of qubit out-of-time-order correlators"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.00667","kind":"arxiv","version":2},"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":"sha256:3dcf206b29e2d89a742564d713c2a9605945ecdd17357b6154d97aad072159e5","target":"record","created_at":"2026-05-18T00:04:07Z","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":"3b46eb47144439c50a001d012ee64fe32d49da12f8e5e98b8e284774c7e3647e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-05-02T08:21:06Z","title_canon_sha256":"90d76061bfd1b57931a5d616d921ea53b0a9e8a921e398c098a2a1478fc5b6c4"},"schema_version":"1.0","source":{"id":"1805.00667","kind":"arxiv","version":2}},"canonical_sha256":"949d068f9e908a20bf55d0514e4b3c45d66aa4c6bb0f18e58fb8d4af26358d97","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"949d068f9e908a20bf55d0514e4b3c45d66aa4c6bb0f18e58fb8d4af26358d97","first_computed_at":"2026-05-18T00:04:07.728906Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:04:07.728906Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"x5Ji2ErlN+LNeAdHCqhP6bhiVLEG0VBFBWswYnVQg1r80BpGzzpOXTKbcqI3dvhjJEr3EvXe6eGvuS1nu4RBBg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:04:07.729477Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.00667","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3dcf206b29e2d89a742564d713c2a9605945ecdd17357b6154d97aad072159e5","sha256:9e22820663056f5d0af5aa6d49a685cd478a2d3f2ca732a21a0b98ddf35be2d9"],"state_sha256":"21b03324ed657a9fe64e044176ab74d490df2b4d684800da9652ffa0027222f5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+CL2Ry3K/yb4x2wF8LOMXgYbWlMQInNwOCo0XBkBl3JObUUOnE36PcNg1gL4RBNvEaX3Qnmx0n4vyo1CSV1bDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T17:51:03.737382Z","bundle_sha256":"15e3927a51fc05ab8f6f9c872b70e3b5ef596713f2e1ffab0faba7c451107664"}}