论文标题
在通量可调的transmon量子计算机的模拟模型中，栅极误差指标的脆弱性
On the fragility of gate-error metrics in simulation models of flux-tunable transmon quantum computers
论文作者
论文摘要
构建量子计算机需要对量子系统的精确控制。缺乏精确度通常会通过登机口指标（例如平均不忠或钻石距离）来量化。但是，通常仅考虑单个门的闸门指标，而不是在连续门上积累的错误。此外，尚不清楚指标对构成模型的假设的敏感程度如何。在这里，我们使用具有通量可调的传输和耦合谐振器的量子计算机的逼真模型研究了这些问题。我们的主要发现表明，（1）栅极 - 误差指标确实受模型的许多假设的影响，（2）连续的栅极误差不会线性积累，并且（3）栅极误差指标是连续门的性能的差预测指标。此外，我们讨论了研究设备体系结构的可扩展性的潜在限制。
Constructing a quantum computer requires immensely precise control over a quantum system. A lack of precision is often quantified by gate-error metrics, such as the average infidelity or the diamond distance. However, usually such gate-error metrics are only considered for individual gates, and not the errors that accumulate over consecutive gates. Furthermore, it is not well known how susceptible the metrics are to the assumptions which make up the model. Here, we investigate these issues using realistic simulation models of quantum computers with flux-tunable transmons and coupling resonators. Our main findings reveal that (1) gate-error metrics are indeed affected by the many assumptions of the model, (2) consecutive gate errors do not accumulate linearly, and (3) gate-error metrics are poor predictors for the performance of consecutive gates. Additionally, we discuss a potential limitation in the scalability of the studied device architecture.
