论文标题
频率可调节的transmon超导量子的量子控制
Quantum control of frequency tunable transmon superconducting qubits
论文作者
论文摘要
在这项工作中，我们通过$ | | 11 \ rangle $和$ | 20 \ rangle $状态分析了控制相门的实现。我们发现，对于TransMon频率有许多不同的控件，该控制频率实现了相同的大门，其保真度约为$ 99.8 \％$（$ t_1 = t_2^{*} = 17 $ $ $ $ $ s）和$ 99.99 \％$（$ t_1 = t_2 = t_2^{*} = 300 $ $ $ $ s）在一个时间范围内限制。通过校准$ | | 11 \ rangle- | 20 \ rangle $共振，可以通过校准等待时间和目标频率来实现所有控制措施。然而，由于泄漏，稳健性降低，稳健性及其有限的带宽，某些控件（例如基于动力不变理论的控件）特别有吸引力。
In this work we analyze the implementation of a control-phase gate through the resonance between the $|11\rangle$ and $|20\rangle$ states of two statically coupled transmons. We find that there are many different controls for the transmon frequency that implement the same gate with fidelities around $99.8\%$ ($T_1=T_2^{*}=17$ $μ$s) and $99.99\%$ ($T_1=T_2^{*}=300$ $μ$s) within a time that approaches the theoretical limit. All controls can be brought to this accuracy by calibrating the waiting time and the destination frequency near the $|11\rangle-|20\rangle$ resonance. However, some controls, such as those based on the theory of dynamical invariants, are particularly attractive due to reduced leakage, robustness against decoherence, and their limited bandwidth.
