Generation of Greenberger-Horne-Zeilinger States on Two-Dimensional Superconducting-Qubit Lattices via Parallel Multiqubit-Gate Operations

被引：12

作者：

Feng, Wei ^{[1
]}

Zhang, Guo-Qiang ^{[1
]}

Su, Qi-Ping ^{[1
]}

Zhang, Jun-Xiang ^{[2
]}

Yang, Chui-Ping ^{[1
,3
]}

机构：

[1] Hangzhou Normal Univ, Sch Phys, Hangzhou 311121, Peoples R China

[2] Zhejiang Univ, Sch Phys, Hangzhou 310027, Peoples R China

[3] Shangrao Normal Univ, Quantum Informat Res Ctr, Shangrao 334001, Peoples R China

来源：

PHYSICAL REVIEW APPLIED | 2022年 / 18卷 / 06期

关键词：

SCHRODINGER CAT STATES; !text type='PYTHON']PYTHON[!/text] FRAMEWORK; QUANTUM; ENTANGLEMENT; DYNAMICS; QUTIP;

D O I：

10.1103/PhysRevApplied.18.064036

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A recent major technological breakthrough in superconducting circuits is the realization of more than 50 qubits arranged on two-dimensional (2D) lattices with tunable nearest-neighbor couplings. We propose a protocol to generate Greenberger-Horne-Zeilinger (GHZ) states on 2D superconducting-qubit lattices by applying multiqubit controlled-iSWAP gates in parallel. The multiqubit gate can be naturally imple-mented based on an effective three-body interaction, which can be synthesized with appropriate detunings and coupling strengths between qubits. We simulate the preparation process of GHZ states with realistic parameters, and show a 37-qubit GHZ state can be generated with a controlled-iSWAP depth of 3. Our pro-posal provides a more promising method of generating GHZ states on the latest 2D superconducting-qubit architectures and will stimulate the preparation of multiqubit entangled states based on multiqubit gates.

引用

页数：8

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