One-way helical electromagnetic wave propagation supported by magnetized plasma

Biao Yang, Mark Lawrence, Wenlong Gao, Qinghua Guo, Shuang Zhang

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)
133 Downloads (Pure)

Abstract

In this paper we reveal the presence of photonic one-way helical surface states in a simple natural system- magnetized plasma. The application of an external magnetic field to a bulk plasma body not only breaks time-reversal-symmetry but also leads to separation of Equi-Frequency Contour surfaces (EFCs) to form topologically nontrivial gaps in k space. Interestingly, these EFCs support topologically protected surface states. We numerically investigate an interface between magnetized plasma, using a realistic model for parameter dispersion, and vacuum, to confirm the existence of one-way scatter-immune helical surface states. Unlike previous proposals for achieving photonic one-way propagation, our scheme does not require the use of artificial structures and should therefore be simple to implement experimentally.
Original languageEnglish
Article number21461
JournalScientific Reports
Volume6
DOIs
Publication statusPublished - 17 Feb 2016

Keywords

  • Metamaterials
  • Nanophotonics and plasmonics

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