{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:TKLVCIOGZFO7IPIH7P37KL4WB7","short_pith_number":"pith:TKLVCIOG","schema_version":"1.0","canonical_sha256":"9a975121c6c95df43d07fbf7f52f960ff62a44c5ea470bd60c8ea650a440995b","source":{"kind":"arxiv","id":"1207.4087","version":2},"attestation_state":"computed","paper":{"title":"Implementation of a spatial two-dimensional quantum random walk with tunable decoherence","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Ji\\v{r}\\'i Svozil\\'ik, Juan P. Torres, Roberto de Jes\\'us Le\\'on-Montiel","submitted_at":"2012-07-17T18:55:55Z","abstract_excerpt":"We put forward a new, versatile and highly-scalable experimental setup for the realization of discrete two-dimensional quantum random walks with a single-qubit coin and tunable degree of decoherence. The proposed scheme makes use of a small number of simple optical components arranged in a multi-path Mach-Zehnder-like configuration, where a weak coherent state with average photon number of 1 is injected. Environmental effects (decoherence) are generated by a spatial light modulator, which introduces pure dephasing in the transverse spatial plane, perpendicular to the direction of propagation o"},"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":"1207.4087","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-07-17T18:55:55Z","cross_cats_sorted":[],"title_canon_sha256":"c7434a1da14f8c25e9abee052c8d6cd1c1ebdbff2b2d0508e173059bf3d65000","abstract_canon_sha256":"057436ab6e65882007c76016d5f87ac96b433041cdc606510cbe7de1e4f34750"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:39:50.965819Z","signature_b64":"jIGqJnB+ij5Zbw9HQcofaAZ+VxApwthHiCKXHs0Yv6Z/mtwl3O58bB1R2iTRGSh7eKPvDKmABXwcmvFGBYCxBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9a975121c6c95df43d07fbf7f52f960ff62a44c5ea470bd60c8ea650a440995b","last_reissued_at":"2026-05-18T03:39:50.965223Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:39:50.965223Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Implementation of a spatial two-dimensional quantum random walk with tunable decoherence","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Ji\\v{r}\\'i Svozil\\'ik, Juan P. Torres, Roberto de Jes\\'us Le\\'on-Montiel","submitted_at":"2012-07-17T18:55:55Z","abstract_excerpt":"We put forward a new, versatile and highly-scalable experimental setup for the realization of discrete two-dimensional quantum random walks with a single-qubit coin and tunable degree of decoherence. The proposed scheme makes use of a small number of simple optical components arranged in a multi-path Mach-Zehnder-like configuration, where a weak coherent state with average photon number of 1 is injected. Environmental effects (decoherence) are generated by a spatial light modulator, which introduces pure dephasing in the transverse spatial plane, perpendicular to the direction of propagation o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1207.4087","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":"1207.4087","created_at":"2026-05-18T03:39:50.965294+00:00"},{"alias_kind":"arxiv_version","alias_value":"1207.4087v2","created_at":"2026-05-18T03:39:50.965294+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1207.4087","created_at":"2026-05-18T03:39:50.965294+00:00"},{"alias_kind":"pith_short_12","alias_value":"TKLVCIOGZFO7","created_at":"2026-05-18T12:27:23.164592+00:00"},{"alias_kind":"pith_short_16","alias_value":"TKLVCIOGZFO7IPIH","created_at":"2026-05-18T12:27:23.164592+00:00"},{"alias_kind":"pith_short_8","alias_value":"TKLVCIOG","created_at":"2026-05-18T12:27:23.164592+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/TKLVCIOGZFO7IPIH7P37KL4WB7","json":"https://pith.science/pith/TKLVCIOGZFO7IPIH7P37KL4WB7.json","graph_json":"https://pith.science/api/pith-number/TKLVCIOGZFO7IPIH7P37KL4WB7/graph.json","events_json":"https://pith.science/api/pith-number/TKLVCIOGZFO7IPIH7P37KL4WB7/events.json","paper":"https://pith.science/paper/TKLVCIOG"},"agent_actions":{"view_html":"https://pith.science/pith/TKLVCIOGZFO7IPIH7P37KL4WB7","download_json":"https://pith.science/pith/TKLVCIOGZFO7IPIH7P37KL4WB7.json","view_paper":"https://pith.science/paper/TKLVCIOG","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1207.4087&json=true","fetch_graph":"https://pith.science/api/pith-number/TKLVCIOGZFO7IPIH7P37KL4WB7/graph.json","fetch_events":"https://pith.science/api/pith-number/TKLVCIOGZFO7IPIH7P37KL4WB7/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/TKLVCIOGZFO7IPIH7P37KL4WB7/action/timestamp_anchor","attest_storage":"https://pith.science/pith/TKLVCIOGZFO7IPIH7P37KL4WB7/action/storage_attestation","attest_author":"https://pith.science/pith/TKLVCIOGZFO7IPIH7P37KL4WB7/action/author_attestation","sign_citation":"https://pith.science/pith/TKLVCIOGZFO7IPIH7P37KL4WB7/action/citation_signature","submit_replication":"https://pith.science/pith/TKLVCIOGZFO7IPIH7P37KL4WB7/action/replication_record"}},"created_at":"2026-05-18T03:39:50.965294+00:00","updated_at":"2026-05-18T03:39:50.965294+00:00"}