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物理学   1篇
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The development of high-fidelity two-qubit quantum gates is essential for digital quantum computing. Here,we propose and realize an all-microwave parametric controlled-Z(CZ) gates by coupling strength modulation in a superconducting Transmon qubit system with tunable couplers. After optimizing the design of the tunable coupler together with the control pulse numerically, we experimentally realized a 100 ns CZ gate with high fidelity of 99.38%±0.34% and the control error being 0.1%. We note that ...  相似文献   
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