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Superconducting Qubits

Genuine 12-qubit entanglement on a superconducting quantum processor

arXiv

Authors: Ming Gong, Ming-Cheng Chen, Yarui Zheng, Shiyu Wang, Chen Zha, Hui Deng, Zhiguang Yan, Hao Rong, Yulin Wu, Shaowei Li, Fusheng Chen, Youwei Zhao, Futian Liang, Jin Lin, Yu Xu, Cheng Guo, Lihua Sun, Anthony D. Castellano, Haohua Wang, Chengzhi Peng, Chao-Yang Lu, Xiaobo Zhu, Jian-Wei Pan

Year

2018

Paper ID

23548

Status

Preprint

Abstract Read

~2 min

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Abstract

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 μs. The fidelity of the 12-qubit entanglement was measured to be above 0.5544pm0.0025, 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. Our results are a substantial step towards large-scale random circuit sampling and scalable measurement-based quantum computing.

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We report the preparation and verification of a genuine 12-qubit entanglement in a superconducting processor.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1811.02292 [2] arXiv https://arxiv.org/abs/1811.02292 [3] Publisher https://arxiv.org/abs/1811.02292

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