{"paper":{"title":"Genuine 12-qubit entanglement on a superconducting quantum processor","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Anthony D. Castellano, Chao-Yang Lu, Cheng Guo, Chengzhi Peng, Chen Zha, Fusheng Chen, Futian Liang, Haohua Wang, Hao Rong, Hui Deng, Jian-Wei Pan, Jin Lin, Lihua Sun, Ming-Cheng Chen, Ming Gong, Shaowei Li, Shiyu Wang, Xiaobo Zhu, Yarui Zheng, Youwei Zhao, Yulin Wu, Yu Xu, Zhiguang Yan","submitted_at":"2018-11-06T11:26:34Z","abstract_excerpt":"We report the preparation and verification of a genuine 12-qubit entanglement in a superconducting processor. The processor that we designed and fabricated has qubits lying on a 1D chain with relaxation times ranging from 29.6 to 54.6 $\\mu$s. The fidelity of the 12-qubit entanglement was measured to be above $0.5544\\pm0.0025$, exceeding the genuine multipartite entanglement threshold by 21 statistical standard deviations. Our entangling circuit to generate linear cluster states is depth-invariant in the number of qubits and uses single- and double-qubit gates instead of collective interactions"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.02292","kind":"arxiv","version":4},"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"}