{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:GCFZUHZ6UZINO2G3DQ2FHRITX6","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":"dfcbe9955b6165c5188ee8396fbfd211fb58eacb51ec18d0c1fc85d201cd6fab","cross_cats_sorted":["cond-mat.dis-nn","cond-mat.quant-gas"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-05-30T08:02:12Z","title_canon_sha256":"3e19697af41655de6e125152d15e9b47d841a07f08324848f9ff97ce8bca9d39"},"schema_version":"1.0","source":{"id":"2006.00214","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.00214","created_at":"2026-07-05T01:42:37Z"},{"alias_kind":"arxiv_version","alias_value":"2006.00214v2","created_at":"2026-07-05T01:42:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.00214","created_at":"2026-07-05T01:42:37Z"},{"alias_kind":"pith_short_12","alias_value":"GCFZUHZ6UZIN","created_at":"2026-07-05T01:42:37Z"},{"alias_kind":"pith_short_16","alias_value":"GCFZUHZ6UZINO2G3","created_at":"2026-07-05T01:42:37Z"},{"alias_kind":"pith_short_8","alias_value":"GCFZUHZ6","created_at":"2026-07-05T01:42:37Z"}],"graph_snapshots":[{"event_id":"sha256:a4c28eacbf15265e05516682b5bc015a5feac665d51e4fdb7201411d72624486","target":"graph","created_at":"2026-07-05T01:42:37Z","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/2006.00214/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We discuss monitoring the time evolution of an analog quantum simulator via a quantum non-demolition (QND) coupling to an auxiliary `clock' qubit. The QND variable of interest is the `energy' of the quantum many-body system, represented by the Hamiltonian of the quantum simulator. We describe a physical implementation of the underlying QND Hamiltonian for Rydberg atoms trapped in tweezer arrays using laser dressing schemes for a broad class of spin models. As an application, we discuss a quantum protocol for measuring the spectral form factor of quantum many-body systems, where the aim is to i","authors_text":"Andrey Grankin, Denis V. Vasilyev, Lukas M. Sieberer, Mikhail A. Baranov, Peter Zoller","cross_cats":["cond-mat.dis-nn","cond-mat.quant-gas"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-05-30T08:02:12Z","title":"Monitoring Quantum Simulators via Quantum Non-Demolition Couplings to Atomic Clock Qubits"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.00214","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":"sha256:6817537f77b70ff676ebc21ba91007d4e6658f398d2f4b9e734a8230024673c8","target":"record","created_at":"2026-07-05T01:42:37Z","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":"dfcbe9955b6165c5188ee8396fbfd211fb58eacb51ec18d0c1fc85d201cd6fab","cross_cats_sorted":["cond-mat.dis-nn","cond-mat.quant-gas"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2020-05-30T08:02:12Z","title_canon_sha256":"3e19697af41655de6e125152d15e9b47d841a07f08324848f9ff97ce8bca9d39"},"schema_version":"1.0","source":{"id":"2006.00214","kind":"arxiv","version":2}},"canonical_sha256":"308b9a1f3ea650d768db1c3453c513bfa39a22982234e040ecf978d9c5233a99","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"308b9a1f3ea650d768db1c3453c513bfa39a22982234e040ecf978d9c5233a99","first_computed_at":"2026-07-05T01:42:37.199942Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:42:37.199942Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wCrXU0DyLhkYCxgHQM3PJiojvPHJ7v1KMhrsFl+ftGa4z6/Rj5Pnm0NVHcmVsN3iXTgjo1AjPTSfPn9POWI8CA==","signature_status":"signed_v1","signed_at":"2026-07-05T01:42:37.200348Z","signed_message":"canonical_sha256_bytes"},"source_id":"2006.00214","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6817537f77b70ff676ebc21ba91007d4e6658f398d2f4b9e734a8230024673c8","sha256:a4c28eacbf15265e05516682b5bc015a5feac665d51e4fdb7201411d72624486"],"state_sha256":"a2c74dcfa71729321a0fc5a01d358489ea451aeca47d8c0223acdb6dc7c97af4"}