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拓扑超导中的Majorana费米子约瑟夫振荡模型

A Josephson Oscillation Model of Majorana Fermions in the Topological Superconductors

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摘要

构造一个简易的模型描述拓扑超导相中Majorana 费米子的约瑟夫振荡,与平庸相中的约瑟夫振荡相比,周期增大一倍.其本质的原因是由于拓扑超导相中发生量子隧穿的Majorana 费米子对的电量为e,而平庸相中量子隧穿的库珀对的电量为2e。

Abstract

A simple model is constructed to describe the Josephson oscillation of Majorana fermions in topological superconducting phase. Compared with the Josephson oscillation in the trivial superconducting phase, the oscillation periodicity doubles in the topological superconducting phase. The essential reason is that the electric quantity of the Majorana fermions pair of the quantum tunneling in the topological superconducting phase is e, and the electric quantity of Cooper pair of the quantum tunneling in the trivial phase is 2e.

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中图分类号:O469

DOI:10.3788/jqo20182404.0801

基金项目:福建省中青年教师科研项目(JAT160293)

收稿日期:2018-04-17

修改稿日期:2018-06-05

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罗运文:闽南师范大学 物理与电子信息工程学院,福建 漳州 363000

联系人作者:罗运文(yunwenluo@163.com)

备注:罗运文(1974-),男,湖南人,硕士,副教授,研究方向:玻色爱因斯坦凝聚、拓扑绝缘体、拓扑超导。

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引用该论文

LUO Yun-wen. A Josephson Oscillation Model of Majorana Fermions in the Topological Superconductors[J]. Acta Sinica Quantum Optica, 2018, 24(4): 463-468

罗运文. 拓扑超导中的Majorana费米子约瑟夫振荡模型[J]. 量子光学学报, 2018, 24(4): 463-468

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