{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:4JDAYGEILO5ZF6CHENDXWWVLEG","short_pith_number":"pith:4JDAYGEI","schema_version":"1.0","canonical_sha256":"e2460c18885bbb92f84723477b5aab218d4c9c6a1439bb365bdbe9368b1a9014","source":{"kind":"arxiv","id":"1802.05446","version":2},"attestation_state":"computed","paper":{"title":"A 2x2 quantum dot array with controllable inter-dot tunnel couplings","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Christian Reichl, Juan Pablo Dehollain, Lieven M. K. Vandersypen, Uditendu Mukhopadhyay, Werner Wegscheider","submitted_at":"2018-02-15T09:32:52Z","abstract_excerpt":"The interaction between electrons in arrays of electrostatically defined quantum dots is naturally described by a Fermi-Hubbard Hamiltonian. Moreover, the high degree of tunability of these systems make them a powerful platform to simulate different regimes of the Hubbard model. However, most quantum dot array implementations have been limited to one-dimensional linear arrays. In this letter, we present a square lattice unit cell of 2$\\times$2 quantum dots defined electrostatically in a AlGaAs/GaAs heterostructure using a double-layer gate technique. We probe the properties of the array using "},"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":"1802.05446","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-02-15T09:32:52Z","cross_cats_sorted":[],"title_canon_sha256":"841322781e8a5ab712f1ffba71e43bee9133aceeb2c2a709d652f1db03750fac","abstract_canon_sha256":"fb3d153459703a5b99b35f0780d271dbab1c0faa26aab679131d3af45967ebe0"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:16:21.184210Z","signature_b64":"n5iXAyfw0bI0eWXRk1WJm9rrLqbCKebT7N34VGPbFuxPKXtBwuvEBT031MgYXrjk5SJkGBx0Hzsh8b+xVHxjAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e2460c18885bbb92f84723477b5aab218d4c9c6a1439bb365bdbe9368b1a9014","last_reissued_at":"2026-05-18T00:16:21.183676Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:16:21.183676Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A 2x2 quantum dot array with controllable inter-dot tunnel couplings","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Christian Reichl, Juan Pablo Dehollain, Lieven M. K. Vandersypen, Uditendu Mukhopadhyay, Werner Wegscheider","submitted_at":"2018-02-15T09:32:52Z","abstract_excerpt":"The interaction between electrons in arrays of electrostatically defined quantum dots is naturally described by a Fermi-Hubbard Hamiltonian. Moreover, the high degree of tunability of these systems make them a powerful platform to simulate different regimes of the Hubbard model. However, most quantum dot array implementations have been limited to one-dimensional linear arrays. In this letter, we present a square lattice unit cell of 2$\\times$2 quantum dots defined electrostatically in a AlGaAs/GaAs heterostructure using a double-layer gate technique. We probe the properties of the array using "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.05446","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":"1802.05446","created_at":"2026-05-18T00:16:21.183749+00:00"},{"alias_kind":"arxiv_version","alias_value":"1802.05446v2","created_at":"2026-05-18T00:16:21.183749+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1802.05446","created_at":"2026-05-18T00:16:21.183749+00:00"},{"alias_kind":"pith_short_12","alias_value":"4JDAYGEILO5Z","created_at":"2026-05-18T12:32:05.422762+00:00"},{"alias_kind":"pith_short_16","alias_value":"4JDAYGEILO5ZF6CH","created_at":"2026-05-18T12:32:05.422762+00:00"},{"alias_kind":"pith_short_8","alias_value":"4JDAYGEI","created_at":"2026-05-18T12:32:05.422762+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/4JDAYGEILO5ZF6CHENDXWWVLEG","json":"https://pith.science/pith/4JDAYGEILO5ZF6CHENDXWWVLEG.json","graph_json":"https://pith.science/api/pith-number/4JDAYGEILO5ZF6CHENDXWWVLEG/graph.json","events_json":"https://pith.science/api/pith-number/4JDAYGEILO5ZF6CHENDXWWVLEG/events.json","paper":"https://pith.science/paper/4JDAYGEI"},"agent_actions":{"view_html":"https://pith.science/pith/4JDAYGEILO5ZF6CHENDXWWVLEG","download_json":"https://pith.science/pith/4JDAYGEILO5ZF6CHENDXWWVLEG.json","view_paper":"https://pith.science/paper/4JDAYGEI","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1802.05446&json=true","fetch_graph":"https://pith.science/api/pith-number/4JDAYGEILO5ZF6CHENDXWWVLEG/graph.json","fetch_events":"https://pith.science/api/pith-number/4JDAYGEILO5ZF6CHENDXWWVLEG/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/4JDAYGEILO5ZF6CHENDXWWVLEG/action/timestamp_anchor","attest_storage":"https://pith.science/pith/4JDAYGEILO5ZF6CHENDXWWVLEG/action/storage_attestation","attest_author":"https://pith.science/pith/4JDAYGEILO5ZF6CHENDXWWVLEG/action/author_attestation","sign_citation":"https://pith.science/pith/4JDAYGEILO5ZF6CHENDXWWVLEG/action/citation_signature","submit_replication":"https://pith.science/pith/4JDAYGEILO5ZF6CHENDXWWVLEG/action/replication_record"}},"created_at":"2026-05-18T00:16:21.183749+00:00","updated_at":"2026-05-18T00:16:21.183749+00:00"}