Noncyclic nonadiabatic geometric quantum gates in a superconducting circuit
Zhuang Ma, Jianwen Xu, Tao Chen, Yu Zhang, Wen Zheng, Shaoxiong Li, Dong Lan, Zheng-Yuan Xue, Xinsheng Tan, Yang Yu
DOI 10.1103/PhysRevApplied.20.054047 · Physical Review Applied
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Abstract
Quantum gates based on geometric phases possess intrinsic noise-resilience features and attract much attention. However, the implementations of previous geometric quantum computation typically require a long pulse time of gates. As a result, their experimental control inevitably suffers from the cumulative disturbances of systematic errors due to excessive time consumption. Here, we experimentally implement noncyclic and nonadiabatic geometric quantum gates in a superconducting circuit, significantly shortening the gate time. Moreover, we experimentally verify that our universal single-qubit geometric gates are more robust to both the Rabi frequency and the qubit frequency shift-induced error, compared with the conventional dynamical gates, using the randomized benchmarking method. This scheme can also be utilized to construct two-qubit geometric operations while the generation of maximally entangled Bell states is demonstrated. Therefore, our results provide a promising routine to achieve fast, high-fidelity, and error-resilient quantum gates in superconducting quantum circuits.
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