Simulation of Two‐Qubit Gates with a Superconducting Qudit
Yuqian Dong, Qiang Liu, Jianhua Wang, Qingshi Li, Xiaoyan Yu, Wen Zheng, Yong Li, Dong Lan, Xinsheng Tan, Yang Yu · physica status solidi (b) · 2021
Herein, a two‐qubit system is experimentally simulated through a four‐level superconducting circuit. By mapping the energy levels of the two‐qubit system to a noncomposite system, some two‐qubit gates with designed microwave pulses, such as Hadamard and CNOT gates, are implemented. Furthermore, the Shannon entropy of the simulated two‐qubit system is measured and the log 2 uncertainty relation is verified, which describes that the noncomposite single‐qudit system possesses hidden quantum correlations.