论文标题
超导QUBITS中的异常周期性和副作用杂交
Anomalous periodicity and parafermion hybridization in superconducting qubits
论文作者
论文摘要
拓扑量子计算取决于受保护的退化子空间，以降噪方式实现复杂的操作。为此，基于非亚伯式准颗粒（例如parafermions）的混合平台具有巨大的希望。这些预计将在分数量子霍尔状态和超导体之间的界面上出现，因此自然而然地将它们搭配到超导码头。在这里，我们研究了副氧气回路，并表明拓扑状态的存在在量子频谱中产生了惊人的周期性。此外，可以在量子微波谱中检测到不同偏执膜耦合的特殊和标记的特征和标记的特征，与分数准颗粒的多个隧道相关。有限的派辅助耦合可以减少非亚伯歧管的完整退化，我们表明该配置可用于评估系统的剩余保护程度。
Topological quantum computation relies on a protected degenerate subspace enabling complicated operations in a noise-resilient way. To this end, hybrid platforms based on non-Abelian quasiparticles such as parafermions hold great promise. These are predicted to emerge at the interface between fractional quantum Hall states and superconductors and therefore naturally couple to superconducting qubits. Here, we study a parafermionic fluxonium circuit and show that the presence of topological states yields a striking periodicity in the qubit spectrum. In addition, peculiar and marked signatures of different parafermion coupling, associated with multiple tunneling of fractional quasiparticles, can be detected in the qubit microwave spectrum. Finite parafermion coupling can reduce the full degeneracy of the non-Abelian manifold, and we show that this configuration can be used to assess the remaining degree of protection of the system.
