{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2015:U3GDKFZ45U3YNS3ACFXIHQEUIR","short_pith_number":"pith:U3GDKFZ4","schema_version":"1.0","canonical_sha256":"a6cc35173ced3786cb60116e83c094445f0c72a8004dc6c2d533281594b745f0","source":{"kind":"arxiv","id":"1511.03849","version":1},"attestation_state":"computed","paper":{"title":"Sequential nonideal measurements of quantum oscillators: Statistical characterization with and without environmental coupling","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Vincenzo Matta, Vincenzo Pierro","submitted_at":"2015-11-12T10:50:38Z","abstract_excerpt":"A one-dimensional quantum oscillator is monitored by taking repeated position measurements. As a first con- tribution, it is shown that, under a quantum nondemolition measurement scheme applied to a system initially at the ground state, (i) the observed sequence of measurements (quantum tracks) corresponding to a single experiment converges to a limit point, and that (ii) the limit point is random over the ensemble of the experiments, being distributed as a zero-mean Gaussian random variable with a variance at most equal to the ground-state variance. As a second contribution, the richer scenar"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1511.03849","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2015-11-12T10:50:38Z","cross_cats_sorted":[],"title_canon_sha256":"8feb25edab9ad3f075acaa025c885b753766e315165da587f9a0a49cf89eb8d6","abstract_canon_sha256":"7b187f7426f326efc244027f6ed88205de6e3c592bab0e8451370e3c09720dfa"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:27:06.656453Z","signature_b64":"J5zw8kUZW4NHoJ8RakZWgc1YeFewj4C31khp2rChqTIDzRPCxyhdTGquuCzq8VQQVjqkfgEJ6idbpKMHZtxTBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a6cc35173ced3786cb60116e83c094445f0c72a8004dc6c2d533281594b745f0","last_reissued_at":"2026-05-18T01:27:06.655624Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:27:06.655624Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Sequential nonideal measurements of quantum oscillators: Statistical characterization with and without environmental coupling","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Vincenzo Matta, Vincenzo Pierro","submitted_at":"2015-11-12T10:50:38Z","abstract_excerpt":"A one-dimensional quantum oscillator is monitored by taking repeated position measurements. As a first con- tribution, it is shown that, under a quantum nondemolition measurement scheme applied to a system initially at the ground state, (i) the observed sequence of measurements (quantum tracks) corresponding to a single experiment converges to a limit point, and that (ii) the limit point is random over the ensemble of the experiments, being distributed as a zero-mean Gaussian random variable with a variance at most equal to the ground-state variance. As a second contribution, the richer scenar"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.03849","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1511.03849","created_at":"2026-05-18T01:27:06.655758+00:00"},{"alias_kind":"arxiv_version","alias_value":"1511.03849v1","created_at":"2026-05-18T01:27:06.655758+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.03849","created_at":"2026-05-18T01:27:06.655758+00:00"},{"alias_kind":"pith_short_12","alias_value":"U3GDKFZ45U3Y","created_at":"2026-05-18T12:29:44.643036+00:00"},{"alias_kind":"pith_short_16","alias_value":"U3GDKFZ45U3YNS3A","created_at":"2026-05-18T12:29:44.643036+00:00"},{"alias_kind":"pith_short_8","alias_value":"U3GDKFZ4","created_at":"2026-05-18T12:29:44.643036+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/U3GDKFZ45U3YNS3ACFXIHQEUIR","json":"https://pith.science/pith/U3GDKFZ45U3YNS3ACFXIHQEUIR.json","graph_json":"https://pith.science/api/pith-number/U3GDKFZ45U3YNS3ACFXIHQEUIR/graph.json","events_json":"https://pith.science/api/pith-number/U3GDKFZ45U3YNS3ACFXIHQEUIR/events.json","paper":"https://pith.science/paper/U3GDKFZ4"},"agent_actions":{"view_html":"https://pith.science/pith/U3GDKFZ45U3YNS3ACFXIHQEUIR","download_json":"https://pith.science/pith/U3GDKFZ45U3YNS3ACFXIHQEUIR.json","view_paper":"https://pith.science/paper/U3GDKFZ4","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1511.03849&json=true","fetch_graph":"https://pith.science/api/pith-number/U3GDKFZ45U3YNS3ACFXIHQEUIR/graph.json","fetch_events":"https://pith.science/api/pith-number/U3GDKFZ45U3YNS3ACFXIHQEUIR/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/U3GDKFZ45U3YNS3ACFXIHQEUIR/action/timestamp_anchor","attest_storage":"https://pith.science/pith/U3GDKFZ45U3YNS3ACFXIHQEUIR/action/storage_attestation","attest_author":"https://pith.science/pith/U3GDKFZ45U3YNS3ACFXIHQEUIR/action/author_attestation","sign_citation":"https://pith.science/pith/U3GDKFZ45U3YNS3ACFXIHQEUIR/action/citation_signature","submit_replication":"https://pith.science/pith/U3GDKFZ45U3YNS3ACFXIHQEUIR/action/replication_record"}},"created_at":"2026-05-18T01:27:06.655758+00:00","updated_at":"2026-05-18T01:27:06.655758+00:00"}