Non-Hermitian Floquet topological superconductors with multiple Majorana edge modes

doi:10.1103/PhysRevB.101.014306

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	Non-Hermitian Floquet topological superconductors with multiple Majorana edge modes
	Zhou, Longwen 1
刊名	PHYSICAL REVIEW B
	2020
卷号	101 期号:1 页码:14306
关键词	FESHBACH RESONANCE TIME FERMIONS
ISSN号	2469-9950
DOI	10.1103/PhysRevB.101.014306
英文摘要	Majorana edge modes are candidate elements of topological quantum computing. In this paper, we propose a Floquet engineering approach to generate multiple non-Hermitian Majorana zero and pi modes at the edges of a one-dimensional topological superconductor. Focusing on a Kitaev chain with periodically kicked superconducting pairings and gain/losses in the chemical potential or nearest-neighbor hopping terms, we found rich non-Hermitian Floquet topological superconducting phases, which are originated from the interplay between drivings and non-Hermitian effects. Each of the phases is characterized by a pair of topological winding numbers, which can in principle take arbitrarily large integer values thanks to the applied driving fields. Under the open boundary condition, these winding numbers also predict the number of degenerate Majorana edge modes with quasienergies zero and pi. Our findings thus expand the family of Floquet topological phases in non-Hermitian settings, with potential applications in realizing environmentally robust Floquet topological quantum computations.
学科主题	Materials Science ; Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/27039]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.Ocean Univ China, Coll Informat Sci & Engn, Dept Phys, Qingdao 266100, Peoples R China 2.Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Longwen. Non-Hermitian Floquet topological superconductors with multiple Majorana edge modes[J]. PHYSICAL REVIEW B,2020,101(1):14306.
APA	Zhou, Longwen.(2020).Non-Hermitian Floquet topological superconductors with multiple Majorana edge modes.PHYSICAL REVIEW B,101(1),14306.
MLA	Zhou, Longwen."Non-Hermitian Floquet topological superconductors with multiple Majorana edge modes".PHYSICAL REVIEW B 101.1(2020):14306.