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Scheme to measure Majorana fermion lifetimes using a quantum dot

机译:使用量子点测量马约拉纳费米子寿命的方案

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摘要

We propose a setup to measure the lifetime of the parity of a pair of Majorana bound states. The proposed experiment has one edge Majorana state tunnel coupled to a quantum dot, which in turn is coupled to a metallic electrode. When the Majorana fermions overlap, even a small relaxation rate qualitatively changes the nonlinear transport spectrum, and for strong overlap the lifetime can be read off directly from the height of a current peak. This is important for the usage of Majorana fermions as a platform for topological quantum computing, where the parity relaxation is a limiting factor.
机译:我们提出了一种用于测量一对马约拉纳绑定状态的奇偶校验寿命的设置。拟议的实验有一个边缘的马里亚纳状态隧道耦合到量子点,量子点又耦合到金属电极。当马约拉纳费米子重迭时,即使很小的弛豫率也会定性地改变非线性传输谱,而对于强重迭,则寿命可以直接从电流峰值的高度读出。这对于将Majorana费米子用作拓扑量子计算的平台非常重要,其中奇偶弛豫是一个限制因素。

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