论文标题
干扰和奇偶校验通过Majorana盒子运输
Interference and parity blockade in transport through a Majorana box
论文作者
论文摘要
Majoraana盒子 - 两个通过琐碎的超导体结合的两个拓扑超导纳米线 - 是旨在展示非亚伯物理学以及拓扑量子计算机体系结构的设备中的一个构建块。从理论上讲，我们通过Majorana盒子调查了电荷运输，并表明当两个Majoranas夫妇夫妇相同时，可以阻止电流，从而固定了他们的平等。与Pauli自旋封锁直接类似，这种奇偶校验封锁可用于快速和高保真量子的初始化和读数，以及基于当前的腐蚀时间测量值。此外，我们证明运输可以区分干净的Majorana盒子和带有其他不需要的Majorana或Andreev Bound State的无序盒子。
A Majorana box - two topological superconducting nanowires coupled via a trivial superconductor - is a building block in devices aiming to demonstrate nonabelian physics, as well as for topological quantum computer architectures. We theoretically investigate charge transport through a Majorana box and show that current can be blocked when two Majoranas couple to the same lead, fixing their parity. In direct analogy to Pauli spin blockade in spin qubits, this parity blockade can be used for fast and high-fidelity qubit initialization and readout, as well as for current-based measurements of decoherence times. Furthermore, we demonstrate that transport can distinguish between a clean Majorana box and a disordered box with additional unwanted Majorana or Andreev bound states.
