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Open Quantum Systems Decoherence

Spectral Distribution of Exceptional Points in Lattices with Localized Loss

arXiv
Authors: J. R. Silva

Year

2026

Paper ID

3826

Status

Preprint

Abstract Read

~2 min

Abstract Words

91

Citations

N/A

Abstract

We explore the existence and stability of exceptional points (EPs) in finite waveguide arrays subject to single-site dissipation. We show that the EP landscape is dictated by a geometry-dependent parity effect, leading to strictly distinct spectral behaviors for arrays with even versus odd numbers of waveguides. Through analytical derivation and numerical analysis, we define the conditions under which these singularities emerge and evolve. Our findings clarify the mechanisms of symmetry breaking in finite non-Hermitian lattices, offering new guidelines for the design of robust optical structures that exploit or avoid exceptional points.

Why This Paper Matters

  • This paper contributes to the Open Quantum Systems & Decoherence research area in the Quantum Articles archive.
  • It adds a 2026 reference point for readers tracking recent quantum research.
  • We explore the existence and stability of exceptional points (EPs) in finite waveguide arrays subject to single-site dissipation.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2601.09628 [2] arXiv https://arxiv.org/abs/2601.09628 [3] Publisher https://arxiv.org/abs/2601.09628

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