{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2009:R5PHQD2ERFUT66TIUB6FQQMAGJ","short_pith_number":"pith:R5PHQD2E","schema_version":"1.0","canonical_sha256":"8f5e780f4489693f7a68a07c58418032555302fb8ea57459bbaff1d111ac8ac6","source":{"kind":"arxiv","id":"0904.4214","version":1},"attestation_state":"computed","paper":{"title":"Quantum walk of a trapped ion in phase space","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Ch. Schneider, H. Schmitz, J. Glueckert, M. Enderlein, R. Matjeschk, T. Huber, T. Schaetz","submitted_at":"2009-04-27T16:53:49Z","abstract_excerpt":"We implement the proof of principle for the quantum walk of one ion in a linear ion trap. With a single-step fidelity exceeding 0.99, we perform three steps of an asymmetric walk on the line. We clearly reveal the differences to its classical counterpart if we allow the walker/ion to take all classical paths simultaneously. Quantum interferences enforce asymmetric, non-classical distributions in the highly entangled degrees of freedom (of coin and position states). We theoretically study and experimentally observe the limitation in the number of steps of our approach, that is imposed by motion"},"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":"0904.4214","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-04-27T16:53:49Z","cross_cats_sorted":[],"title_canon_sha256":"e66beaccfdc30936898f31e137eb4d7c269901dad7d7356445ab43fe3e1e7085","abstract_canon_sha256":"6fc7a2f60f0181b8541ab8548fc4f887188e7909eaea0e57cdf5b1e7aa785d8c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:13:56.994163Z","signature_b64":"HemPmFjohRLodekNpPfgeB8PamJ0ZjWwlfZsx3dOPCYYCmRgtS9SBI5PyBK0VC/ktyrc1bN9WU+m4J2qaxffCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8f5e780f4489693f7a68a07c58418032555302fb8ea57459bbaff1d111ac8ac6","last_reissued_at":"2026-05-18T02:13:56.993505Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:13:56.993505Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Quantum walk of a trapped ion in phase space","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Ch. Schneider, H. Schmitz, J. Glueckert, M. Enderlein, R. Matjeschk, T. Huber, T. Schaetz","submitted_at":"2009-04-27T16:53:49Z","abstract_excerpt":"We implement the proof of principle for the quantum walk of one ion in a linear ion trap. With a single-step fidelity exceeding 0.99, we perform three steps of an asymmetric walk on the line. We clearly reveal the differences to its classical counterpart if we allow the walker/ion to take all classical paths simultaneously. Quantum interferences enforce asymmetric, non-classical distributions in the highly entangled degrees of freedom (of coin and position states). We theoretically study and experimentally observe the limitation in the number of steps of our approach, that is imposed by motion"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0904.4214","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":"0904.4214","created_at":"2026-05-18T02:13:56.993599+00:00"},{"alias_kind":"arxiv_version","alias_value":"0904.4214v1","created_at":"2026-05-18T02:13:56.993599+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0904.4214","created_at":"2026-05-18T02:13:56.993599+00:00"},{"alias_kind":"pith_short_12","alias_value":"R5PHQD2ERFUT","created_at":"2026-05-18T12:26:01.383474+00:00"},{"alias_kind":"pith_short_16","alias_value":"R5PHQD2ERFUT66TI","created_at":"2026-05-18T12:26:01.383474+00:00"},{"alias_kind":"pith_short_8","alias_value":"R5PHQD2E","created_at":"2026-05-18T12:26:01.383474+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2411.16843","citing_title":"Mobility edges in pseudo-unitary quasiperiodic quantum walks","ref_index":83,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/R5PHQD2ERFUT66TIUB6FQQMAGJ","json":"https://pith.science/pith/R5PHQD2ERFUT66TIUB6FQQMAGJ.json","graph_json":"https://pith.science/api/pith-number/R5PHQD2ERFUT66TIUB6FQQMAGJ/graph.json","events_json":"https://pith.science/api/pith-number/R5PHQD2ERFUT66TIUB6FQQMAGJ/events.json","paper":"https://pith.science/paper/R5PHQD2E"},"agent_actions":{"view_html":"https://pith.science/pith/R5PHQD2ERFUT66TIUB6FQQMAGJ","download_json":"https://pith.science/pith/R5PHQD2ERFUT66TIUB6FQQMAGJ.json","view_paper":"https://pith.science/paper/R5PHQD2E","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0904.4214&json=true","fetch_graph":"https://pith.science/api/pith-number/R5PHQD2ERFUT66TIUB6FQQMAGJ/graph.json","fetch_events":"https://pith.science/api/pith-number/R5PHQD2ERFUT66TIUB6FQQMAGJ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/R5PHQD2ERFUT66TIUB6FQQMAGJ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/R5PHQD2ERFUT66TIUB6FQQMAGJ/action/storage_attestation","attest_author":"https://pith.science/pith/R5PHQD2ERFUT66TIUB6FQQMAGJ/action/author_attestation","sign_citation":"https://pith.science/pith/R5PHQD2ERFUT66TIUB6FQQMAGJ/action/citation_signature","submit_replication":"https://pith.science/pith/R5PHQD2ERFUT66TIUB6FQQMAGJ/action/replication_record"}},"created_at":"2026-05-18T02:13:56.993599+00:00","updated_at":"2026-05-18T02:13:56.993599+00:00"}