Complex Momentum Bands Feature Non-Hermitian Time Topology
Though time and space are fundamentally different, periodicity in time inspired by a lattice in space led to the rapidly evolving field of temporal crystals and time-varying media [1]. Soon, time became a promising candidate for uncovering new topological phenomena [2]. In this vein, we introduce momentum point gaps and show they underpin a temporal version of the non-Hermitian skin effect [3].
Authors
- Joshua Feis (ORCID: https://orcid.org/0000-0002-8497-3285)
- Andrea Steinfurth (ORCID: https://orcid.org/0000-0002-3053-149X)
- Sebastian Weidemann (ORCID: https://orcid.org/0000-0002-0090-1760)
- Alexander Szameit (ORCID: https://orcid.org/0000-0003-0071-6941)
- Tom D. Sheppard (ORCID: https://orcid.org/0000-0002-3455-1164)
- Hannah M. Price (ORCID: https://orcid.org/0000-0002-1377-596X)
- Julia Görsch
Institutions
- University College Birmingham (GB)
- University of Rostock (DE)
- University of Birmingham (GB)
Publication Details
- Published
- 2025-06-23
- DOI
- https://doi.org/10.1109/cleo/europe-eqec65582.2025.11109129
- Primary Topic
- Quantum Mechanics and Non-Hermitian Physics
- Type
- article
- Field-Weighted Citation Impact
- 0.00