论文标题
用几何超级对象超过电阻量子
Surpassing the resistance quantum with a geometric superinductor
论文作者
论文摘要
超导电路社区最近发现了超级感应器的潜力。这些电路元件具有超过电阻量子$ r_ \ text {q} \大约6.45〜 \ text {k}ω$的特征阻抗，从而导致抑制基态电荷波动。应用包括实现硬件受保护的量子器，用于容忍量子计算，改进与小偶极矩对象的耦合以及定义安培的新量子计量标准。在这项工作中，我们驳斥了广泛的观念，即只能基于动力学电感，即使用无序的超导体或约瑟夫森连接阵列才能实现超级感应。我们介绍了104个平面铝盘谐振器的建模，制造和表征，具有特征性的阻抗，高达30.9 $ \ text {k}ω$ 5.6 GHz时，电容降低到$ \ \ leq1 $ ff，低损耗和低功能和电力处理能够达到$ 10^8 $ inseta cav cav cav cav cav cav cavity photons。几何超级感电一直没有不受控制的隧道事件，并具有较高的可重复性，线性和磁性融化的能力 - 可以显着扩大未来量子电路的范围。
The superconducting circuit community has recently discovered the promising potential of superinductors. These circuit elements have a characteristic impedance exceeding the resistance quantum $R_\text{Q} \approx 6.45~\text{k}Ω$ which leads to a suppression of ground state charge fluctuations. Applications include the realization of hardware protected qubits for fault tolerant quantum computing, improved coupling to small dipole moment objects and defining a new quantum metrology standard for the ampere. In this work we refute the widespread notion that superinductors can only be implemented based on kinetic inductance, i.e. using disordered superconductors or Josephson junction arrays. We present modeling, fabrication and characterization of 104 planar aluminum coil resonators with a characteristic impedance up to 30.9 $\text{k}Ω$ at 5.6 GHz and a capacitance down to $\leq1$ fF, with low-loss and a power handling reaching $10^8$ intra-cavity photons. Geometric superinductors are free of uncontrolled tunneling events and offer high reproducibility, linearity and the ability to couple magnetically - properties that significantly broaden the scope of future quantum circuits.
