论文标题
快速参数两分之二的门，使用平均侵略超导乘以抑制残留相互作用的抑制作用
Fast parametric two-qubit gates with suppressed residual interaction using a parity-violated superconducting qubit
论文作者
论文摘要
我们使用奇偶校验的超导量子Qubit展示了快速的两分门，该量子量子位由有限的磁通量偏置下的电容缩合的不对称的Josephson-Gunction环组成。 Qubit中的二阶非线性表现出来，可以通过一阶Qubit Inter-newmon Qubit通过一阶次级侧带，Rabi频率高达30〜MHz。同时，不需要的静态纵向〜（Zz）相互作用被消除，通过接近侧带过渡的连续微波驱动器引起的交流恒定偏移。 CZ，ISWAP和Swap门分别评估了两倍闸门的平均忠诚度为0.967、0.951、0.956。
We demonstrate fast two-qubit gates using a parity-violated superconducting qubit consisting of a capacitively-shunted asymmetric Josephson-junction loop under a finite magnetic flux bias. The second-order nonlinearity manifesting in the qubit enables the interaction with a neighboring single-junction transmon qubit via first-order inter-qubit sideband transitions with Rabi frequencies up to 30~MHz. Simultaneously, the unwanted static longitudinal~(ZZ) interaction is eliminated with ac Stark shifts induced by a continuous microwave drive near-resonant to the sideband transitions. The average fidelities of the two-qubit gates are evaluated with randomized benchmarking as 0.967, 0.951, 0.956 for CZ, iSWAP and SWAP gates, respectively.
