论文标题
超导型零件零模式中的超导式矩形中的准粒子中毒率
Quasiparticle poisoning rate in a superconducting transmon qubit involving Majorana zero modes
论文作者
论文摘要
Majorana零模式引起了人们的关注，因为它们在耐断层拓扑量子计算中的前瞻性应用。近年来，已经提出了一些方案，用于使用超导量子台检测和操纵Majora零模式。但是，必须将操纵和读取Majorana零模式保存在准粒子中毒的时间窗口中。在这项工作中，我们研究了含有涉及Majorana零模式的杂交约瑟夫森连接的分裂的transmon固定量子中的准粒子中毒的问题。我们表明，主要耦合将导致平等混合和4πJosephson效应。此外，我们获得了量子参数依赖性的奇偶校验转换率的表达，并证明可以通过Qubit设计减少E_J/E_C极大地抑制Quasiparticle中毒。
Majorana zero modes have been attracting considerable attention because of their prospective applications in fault-tolerant topological quantum computing. In recent years, some schemes have been proposed to detect and manipulate Majorana zero modes using superconducting qubits. However, manipulating and reading the Majorana zero modes must be kept in the time window of quasiparticle poisoning. In this work, we study the problem of quasiparticle poisoning in a split transmon qubit containing hybrid Josephson junctions involving Majorana zero modes. We show that Majorana coupling will cause parity mixing and 4π Josephson effect. In addition, we obtained the expression of qubit parameter-dependent parity switching rate and demonstrated that quasiparticle poisoning can be greatly suppressed by reducing E_J/E_C via qubit design.
