Topological Phases of Non-Hermitian Systems

  title={Topological Phases of Non-Hermitian Systems},
  author={Zongping Gong and Yuto Ashida and Kohei Kawabata and Kazuaki Takasan and Sho Higashikawa and Masahito Ueda},
  journal={Physical Review X},
Recent experimental advances in controlling dissipation have brought about unprecedented flexibility in engineering non-Hermitian Hamiltonians in open classical and quantum systems. A particular interest centers on the topological properties of non-Hermitian systems, which exhibit unique phases with no Hermitian counterparts. However, no systematic understanding in analogy with the periodic table of topological insulators and superconductors has been achieved. In this paper, we develop a… 
Non-Hermitian topological phases and dynamical quantum phase transitions: a generic connection
The dynamical and topological properties of non-Hermitian systems have attracted great attention in recent years. In this work, we establish an intrinsic connection between two classes of intriguing
New topological invariants in non-Hermitian systems.
  • Ananya Ghatak, T. Das
  • Physics, Mathematics
    Journal of physics. Condensed matter : an Institute of Physics journal
  • 2019
This article reviews the key concepts pertaining to topological phases in non-Hermitian Hamiltonians with relevant examples and realistic model setups, and highlights potential applications of some of these unique topological features of the non- hermitianHamiltonians.
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Parity-time-symmetric topological superconductor
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