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Open Quantum Systems Decoherence Quantum Simulation

Untying links through anti-parity-time-symmetric coupling

arXiv
Authors: H. C. Wu, X. M. Yang, L. Jin, Z. Song

Year

2020

Paper ID

22166

Status

Preprint

Abstract Read

~2 min

Abstract Words

93

Citations

N/A

Abstract

We reveal how the vector field links are untied under the influence of anti-parity-time-symmetric couplings in a dissipative sublattice-symmetric topological photonic crystal lattice. The topology of the quasi-one-dimensional two-band system is encoded in the geometric topology of the vector fields associated with the Bloch Hamiltonian. The linked vector fields reflect the topology of the nontrivial phase. The topological phase transition occurs concomitantly with the untying of the vector field link at the exceptional points. Counterintuitively, more dissipation constructively creates a nontrivial topology. The linking number predicts the number of topological photonic zero modes.

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  • We reveal how the vector field links are untied under the influence of anti-parity-time-symmetric couplings in a dissipative sublattice-symmetric topological photonic crystal...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2007.08724 [2] arXiv https://arxiv.org/abs/2007.08724 [3] Publisher https://arxiv.org/abs/2007.08724

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