{"paper":{"title":"Deterministic creation of a four-qubit W state using one- and two-qubit gates","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Can Yesilyurt, Firat Diker","submitted_at":"2017-04-25T13:40:40Z","abstract_excerpt":"We propose an optical scheme to build an entangled network composed of $W$ state based on polarization encoded qubits (photons). This new setup consists of 2 $cNOT$ gates, 4 $V$ gates, 2 $Hadamard$ gates and basic optical tools such as polarizing beamsplitters ($PBS$s) and path couplers ($PC$s). $V$ gate is a specially-designed tool acting as a two-qubit gate which is composed of a $cNOT$ gate, 3 $PBS$s and a $PC$. By using this gate, one benefits from the temporarily generated optical degree of freedom, which is the spatial mode of a photon in the proposed scheme. Using an extra degree of fre"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.08204","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"}