标题： 具有个体单次量子比特读出的双transmon处理器的表征 显示英文标题

标题： Characterization of a two-transmon processor with individual single-shot qubit readout

摘要： 我们报告了对一个由两个电容耦合的可调谐超导量子比特（transmon类型）实现的双量子比特处理器的表征，每个量子比特都有其自身的非破坏性单次读出。 固定的电容耦合在适当的相互作用时间下产生\sqrt{iSWAP}两量子比特门。 我们通过状态层析成像重建了双比特寄存器的相干动力学随相互作用时间的变化，校正读出误差后观察到贝尔不等式的违反达到22个标准差，并通过量子过程层析成像测量得到90%的门保真度。 显示英文摘要

摘要： We report the characterization of a two-qubit processor implemented with two capacitively coupled tunable superconducting qubits of the transmon type, each qubit having its own non-destructive single-shot readout. The fixed capacitive coupling yields the \sqrt{iSWAP} two-qubit gate for a suitable interaction time. We reconstruct by state tomography the coherent dynamics of the two-bit register as a function of the interaction time, observe a violation of the Bell inequality by 22 standard deviations after correcting readout errors, and measure by quantum process tomography a gate fidelity of 90%.