{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:L4TH6PSRZ2V4PFBJSZCFNSF2GK","short_pith_number":"pith:L4TH6PSR","schema_version":"1.0","canonical_sha256":"5f267f3e51ceabc79429964456c8ba329b7d44ca79b8b20deac61898e47f8ce8","source":{"kind":"arxiv","id":"1712.07080","version":2},"attestation_state":"computed","paper":{"title":"Decoherence of up to 8-qubit entangled states in a 16-qubit superconducting quantum processor","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Asier Ozaeta, Peter L. McMahon","submitted_at":"2017-12-19T17:57:28Z","abstract_excerpt":"We report on the coherence of Greenberger-Horne-Zeilinger (GHZ) states comprised of up to 8 qubits in the IBM ibmqx5 16-qubit quantum processor. In particular, we evaluate the coherence of GHZ states with $N=1,\\ldots,8$ qubits, as a function of a delay time between state creation and measurement. We find that the decay in coherence occurs at a rate that is linear in the number of qubits. This is consistent with a model in which the dominant noise affecting the system is uncorrelated across qubits."},"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":"1712.07080","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2017-12-19T17:57:28Z","cross_cats_sorted":[],"title_canon_sha256":"87468f7fca7739f758331133bb202efd3088b5f9db1907b1a55d9fef7d3ba92a","abstract_canon_sha256":"a9387da0ab9d562da333b6eb81ab02b81e9d712da1728afc9901b5e2292f9d67"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:48:02.180299Z","signature_b64":"t1RbAMZtyXU8tciYkVQguKewlrzK+/lpvNudjRFmcOaAT5XAzSJ6gES6WlWHKg4c7X4XwddosDfe6YToJEwDDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5f267f3e51ceabc79429964456c8ba329b7d44ca79b8b20deac61898e47f8ce8","last_reissued_at":"2026-05-17T23:48:02.179754Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:48:02.179754Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Decoherence of up to 8-qubit entangled states in a 16-qubit superconducting quantum processor","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Asier Ozaeta, Peter L. McMahon","submitted_at":"2017-12-19T17:57:28Z","abstract_excerpt":"We report on the coherence of Greenberger-Horne-Zeilinger (GHZ) states comprised of up to 8 qubits in the IBM ibmqx5 16-qubit quantum processor. In particular, we evaluate the coherence of GHZ states with $N=1,\\ldots,8$ qubits, as a function of a delay time between state creation and measurement. We find that the decay in coherence occurs at a rate that is linear in the number of qubits. This is consistent with a model in which the dominant noise affecting the system is uncorrelated across qubits."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.07080","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1712.07080","created_at":"2026-05-17T23:48:02.179835+00:00"},{"alias_kind":"arxiv_version","alias_value":"1712.07080v2","created_at":"2026-05-17T23:48:02.179835+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.07080","created_at":"2026-05-17T23:48:02.179835+00:00"},{"alias_kind":"pith_short_12","alias_value":"L4TH6PSRZ2V4","created_at":"2026-05-18T12:31:28.150371+00:00"},{"alias_kind":"pith_short_16","alias_value":"L4TH6PSRZ2V4PFBJ","created_at":"2026-05-18T12:31:28.150371+00:00"},{"alias_kind":"pith_short_8","alias_value":"L4TH6PSR","created_at":"2026-05-18T12:31:28.150371+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/L4TH6PSRZ2V4PFBJSZCFNSF2GK","json":"https://pith.science/pith/L4TH6PSRZ2V4PFBJSZCFNSF2GK.json","graph_json":"https://pith.science/api/pith-number/L4TH6PSRZ2V4PFBJSZCFNSF2GK/graph.json","events_json":"https://pith.science/api/pith-number/L4TH6PSRZ2V4PFBJSZCFNSF2GK/events.json","paper":"https://pith.science/paper/L4TH6PSR"},"agent_actions":{"view_html":"https://pith.science/pith/L4TH6PSRZ2V4PFBJSZCFNSF2GK","download_json":"https://pith.science/pith/L4TH6PSRZ2V4PFBJSZCFNSF2GK.json","view_paper":"https://pith.science/paper/L4TH6PSR","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1712.07080&json=true","fetch_graph":"https://pith.science/api/pith-number/L4TH6PSRZ2V4PFBJSZCFNSF2GK/graph.json","fetch_events":"https://pith.science/api/pith-number/L4TH6PSRZ2V4PFBJSZCFNSF2GK/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/L4TH6PSRZ2V4PFBJSZCFNSF2GK/action/timestamp_anchor","attest_storage":"https://pith.science/pith/L4TH6PSRZ2V4PFBJSZCFNSF2GK/action/storage_attestation","attest_author":"https://pith.science/pith/L4TH6PSRZ2V4PFBJSZCFNSF2GK/action/author_attestation","sign_citation":"https://pith.science/pith/L4TH6PSRZ2V4PFBJSZCFNSF2GK/action/citation_signature","submit_replication":"https://pith.science/pith/L4TH6PSRZ2V4PFBJSZCFNSF2GK/action/replication_record"}},"created_at":"2026-05-17T23:48:02.179835+00:00","updated_at":"2026-05-17T23:48:02.179835+00:00"}