论文标题
W波段超导动力电感Qubit（Kineticon）的初始设计
Initial Design of a W-band Superconducting Kinetic Inductance Qubit (Kineticon)
论文作者
论文摘要
超导Qubits广泛用于量子计算研究和行业。我们描述了一个具有非线性纳米线段以W波段频率运行的超导动力电感Qubit（并介绍了运动术语以描述它来描述它），该部分提供了两个不同的量子能状态所需的非谐调性。在较高频率下操作量子位可能会放松这些设备的稀释冰箱温度要求，并为多重量子数的路径铺平了路径。毫米波操作需要具有相对较高的$ t_c $的超导体，这意味着高间隙频率为2 $δ/h $，超过该光子破坏了库珀对。例如，带有$ t_c = 15 \，\ text {k} $的nbtin的间隙频率接近1.4 THz，比铝（90 GHz）高得多，可以在整个毫米波频段中进行操作。在这里，我们描述了嵌入3-D腔中的W波段运动量子的设计和模拟。我们对所得场分布执行经典电磁计算。
Superconducting qubits are widely used in quantum computing research and industry. We describe a superconducting kinetic inductance qubit (and introduce the term Kineticon to describe it) operating at W-band frequencies with a nonlinear nanowire section that provides the anharmonicity required for two distinct quantum energy states. Operating the qubits at higher frequencies may relax the dilution refrigerator temperature requirements for these devices and paves the path for multiplexing a large number of qubits. Millimeter-wave operation requires superconductors with relatively high $T_c$, which implies high gap frequency, 2$Δ/h$, beyond which photons break Cooper pairs. For example, NbTiN with $T_c =15\,\text{K}$ has a gap frequency near 1.4 THz, which is much higher than that of aluminum (90 GHz), allowing for operation throughout the millimeter-wave band. Here we describe a design and simulation of a W-band Kineticon qubit embedded in a 3-D cavity. We perform classical electromagnetic calculations of the resulting field distributions.
