Incoherent non-Hermitian skin effect in photonic quantum walks

Stefano Longhi

doi:10.1038/s41377-024-01438-w

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Incoherent non-Hermitian skin effect in photonic quantum walks

Original Articles

- Incoherent non-Hermitian skin effect in photonic quantum walks
- Light: Science & Applications Vol. 13, Issue 5, Pages: 885-893(2024)
- Affiliations：
  
  1.Dipartimento di Fisica, Politecnico di Milano, Piazza L. da Vinci 32, I-20133 Milano, Italy
  2.IFISC (UIB-CSIC), Instituto de Fisica Interdisciplinar y Sistemas Complejos, E-07122 Palma de Mallorca, Spain
- Author bio：
  
  Stefano Longhi (stefano.longhi@polimi.it)
- Funds：
- DOI：10.1038/s41377-024-01438-w
  CLC：
- Received：07 December 2023，
  
  Revised：2024-03-08，
  
  Accepted：25 March 2024，
  
  Published Online：25 April 2024，
  
  Published：31 May 2024
- Accepted：
Scan QR Code
Longhi, S. Incoherent non-Hermitian skin effect in photonic quantum walks. Light: Science & Applications, 13, 885-893 (2024).
DOI：

Longhi, S. Incoherent non-Hermitian skin effect in photonic quantum walks. Light: Science & Applications, 13, 885-893 (2024). DOI： 10.1038/s41377-024-01438-w.

摘要

Abstract

The non-Hermitian skin effect describes the concentration of an extensive number of eigenstates near the boundaries of certain dissipative systems. This phenomenon has raised a huge interest in different areas of physics

including photonics

deeply expanding our understanding of non-Hermitian systems and opening up new avenues in both fundamental and applied aspects of topological phenomena. The skin effect has been associated to a nontrivial point-gap spectral topology and has been experimentally demonstrated in a variety of synthetic matter systems

including photonic lattices. In most of physical models exhibiting the non-Hermitian skin effect full or partial wave coherence is generally assumed. Here we push the concept of skin effect into the fully incoherent regime and show that rather generally (but not universally) the non-Hermitian skin effect persists under dephasing dynamics. The results are illustrated by considering incoherent light dynamics in non-Hermitian photonic quantum walks.

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Keywords

references

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