We studied anomalous Josephson effect(AJE) in Josephson trijunctions fabricated on Bi_(2)Se_(3), and found that the AJE in T-shaped trijunctions significantly alters the Majorana phase diagram of the trijunctions, whe...We studied anomalous Josephson effect(AJE) in Josephson trijunctions fabricated on Bi_(2)Se_(3), and found that the AJE in T-shaped trijunctions significantly alters the Majorana phase diagram of the trijunctions, when an in-plane magnetic field is applied parallel to two of the three single junctions. Such a phenomenon in topological insulator-based Josephson trijunction provides unambiguous evidence for the existence of AJE in the system, and may provide an additional knob for controlling the Majorana bound states in the Fu–Kane scheme of topological quantum computation.展开更多
基金supported by the National Basic Research Program of China (Grant Nos. 2016YFA0300601, 2017YFA0304700, and 2015CB921402)the National Natural Science Foundation of China (Grant Nos. 11527806, 92065203, 12074417, 11874406, and 11774405)+2 种基金the Beijing Academy of Quantum Information Sciences (Grant No. Y18G08)the Strategic Priority Research Program B of Chinese Academy of Sciences (Grant Nos. XDB33010300, XDB28000000, and XDB07010100)the Synergetic Extreme Condition User Facility sponsored by the National Development and Reform Commission。
文摘We studied anomalous Josephson effect(AJE) in Josephson trijunctions fabricated on Bi_(2)Se_(3), and found that the AJE in T-shaped trijunctions significantly alters the Majorana phase diagram of the trijunctions, when an in-plane magnetic field is applied parallel to two of the three single junctions. Such a phenomenon in topological insulator-based Josephson trijunction provides unambiguous evidence for the existence of AJE in the system, and may provide an additional knob for controlling the Majorana bound states in the Fu–Kane scheme of topological quantum computation.
