期刊
PHYSICAL REVIEW LETTERS
卷 124, 期 23, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.124.230503
关键词
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资金
- Key R&D Program of Guangdong Province [2018B030326001]
- National Natural Science Foundation of China [11874156, 11874235]
- National Key R&D Program of China [2016 YFA0301803]
- National Key Research and Development Program of China [2017YFA0304303]
Using geometric phases to realize noise-resilient quantum computing is an important method to enhance the control fidelity. in this work, we experimentally realize a universal nonadiabatic geometric quantum gate set in a superconducting qubit chain. We characterize the realized single- and two-qubit geometric gates with both quantum process tomography and randomized benchmarking methods. The measured average fidelities for the single-qubit rotation gates and two-qubit controlled-Z gate are 0.9977(1) and 0.977(9), respectively. Besides, we also experimentally demonstrate the noise-resilient feature of the realized single-qubit geometric gates by comparing their performance with the conventional dynamical gates with different types of errors in the control field. Thus, our experiment proves a way to achieve high-fidelity geometric quantum gates for robust quantum computation.
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