Dissipative Floquet Majorana Modes in Proximity-Induced Topological Superconductors

Zhesen Yang, Qinghong Yang, Jiangping Hu, and Dong E. Liu
Phys. Rev. Lett. 126, 086801 – Published 25 February 2021
PDFHTMLExport Citation

Abstract

We study a realistic Floquet topological superconductor, a periodically driven nanowire proximitized to an equilibrium s-wave superconductor. Because of the strong energy and density fluctuations caused by the superconducting proximity effect, the Floquet Majorana wire becomes dissipative. We show that the Floquet band structure is still preserved in this dissipative system. In particular, we find that the Floquet Majorana zero and π modes can no longer be simply described by the Floquet topological band theory. We also propose an effective model to simplify the calculation of the lifetime of these Floquet Majoranas and find that the lifetime can be engineered by the external driving field.

  • Figure
  • Figure
  • Figure
  • Received 4 May 2020
  • Revised 27 August 2020
  • Accepted 28 January 2021

DOI:https://doi.org/10.1103/PhysRevLett.126.086801

© 2021 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Zhesen Yang1, Qinghong Yang2,3, Jiangping Hu1,4,5, and Dong E. Liu2,3,6,*

  • 1Beijing National Laboratory for Condensed Matter Physics, and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • 2State Key Laboratory of Low Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, China
  • 3Beijing Academy of Quantum Information Sciences, Beijing 100193, China
  • 4Kavli Institute for Theoretical Sciences, University of Chinese Academy of Sciences, Beijing 100190, China
  • 5South Bay Interdisciplinary Science Center, Dongguan, Guangdong 523808, China
  • 6Frontier Science Center for Quantum Information, Beijing 100184, China

  • *Corresponding author. dongeliu@mail.tsinghua.edu.cn

Article Text (Subscription Required)

Click to Expand

Supplemental Material (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 126, Iss. 8 — 26 February 2021

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×