Non-Hermitian Skin Effect in Periodically-Driven Dissipative Ultracold Atoms
arXiv:2311.06550 · doi:10.1103/PhysRevA.109.063329
Abstract
The non-Hermitian skin effect (NHSE), featured by the collapse of bulk-band eigenstates into the localized boundary modes of the systems, is one of most striking properties in the fields of non-Hermitian physics. Unique physical phenomena related to the NHSE have attracted a lot of interest, however, their experimental realizations usually require nonreciprocal hopping, which faces a great challenge in ultracold-atom systems. In this work, we propose to realize the NHSE in a 1D optical lattice by periodically-driven ultracold atoms in the presence of staggered atomic loss. By studying the effective Floquet Hamiltonian in the high-frequency approximation, we reveal the underlying mechanism for the periodic-driving-induced the NHSE. We found that the robust NHSE can be tuned by driving phase, which is manifested by the dynamical localization. Most remarkably, we uncover the periodic-driving-induced critical skin effect for two coupled chains with different driving phases, accompanied by the appearance of size-dependent topological in-gap modes. Our studies provide a feasible way for observing the NHSE and exploring corresponding unique physical phenomena due to the interplay of non-Hermiticity and many-body statistics in ultracold-atom systems.
12 pages, 11 figures
References in corpus (31)
- Theory of ultracold Fermi gases
- Topological Origin of Non-Hermitian Skin Effects
- Efficient Light Funneling based on the non-Hermitian Skin Effect
- Periodically-driven quantum systems: Effective Hamiltonians and engineered gauge fields
- Edge Modes, Degeneracies, and Topological Numbers in Non-Hermitian Systems
- Topological Quantum Matter with Ultracold Gases in Optical Lattices
- Weyl Exceptional Rings in a Three-Dimensional Dissipative Cold Atomic Gas
- Tools for quantum simulation with ultracold atoms in optical lattices
- Periodic Table for Topological Bands with Non-Hermitian Bernard-LeClair Symmetries
- Universal non-Hermitian skin effect in two and higher dimensions
- Observation of Non-Hermitian Skin Effect and Topology in Ultracold Atoms
- Non-Hermitian topological phenomena: A review
- Observation of hybrid higher-order skin-topological effect in non-Hermitian topolectrical circuits
- Topological Non-Hermitian skin effect
- Emergence of coherence in a uniform quasi-two-dimensional Bose gas
- Entanglement Phase Transition Induced by the Non-Hermitian Skin Effect
- Tailoring quantum gases by Floquet engineering
- Direct imaging of topological edge states in cold-atom systems
- Observation of exceptional points and skin effect correspondence in non-Hermitian phononic crystals
- Hybrid skin-topological modes without asymmetric couplings
- Enhancement of Second-Order Non-Hermitian Skin Effect by Magnetic Fields
- Engineering Non-Hermitian Skin Effect with Band Topology in Ultracold Gases
- Dynamical Degeneracy Splitting and Directional Invisibility in Non-Hermitian Systems
- Universal competitive spectral scaling from the critical non-Hermitian skin effect
- Symmetry and topological classification of Floquet non-Hermitian systems
- Loss-induced Floquet non-Hermitian skin effect
- Real-space detection and manipulation of topological edge modes with ultracold atoms
- Theoretical Prediction of Non-Hermitian Skin Effect in Ultracold Atom Systems
- Non-Hermitian Absorption Spectroscopy
- Localization-Delocalization Transitions in Non-Hermitian Aharonov-Bohm Cages
- Loss-induced universal one-way transport in periodically driven systems
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- Versatile Control of Nonlinear Topological States in Non-Hermitian Systems
- Anomalous pumping in the non-Hermitian Rice-Mele model
- Interaction-Induced Second-Order Skin Effect
- Chiral-Extended Photon-Emitter Dressed States in Non-Hermitian Topological Baths
- Many-body critical non-Hermitian skin effect
- Concurrent Skin-scale-free Localization and Criticality under Möbius Boundary Conditions in a Non-Hermitian Ladder
- Arbitrary Control of Non-Hermitian Skin Modes via Disorder and An Electric Field
- Exploring Nonreciprocal Noise Transfer under Onsager-Casimir Symmetry in Synthetic-Field Optomechanics
- Exceptional flat bands in bipartite non-Hermitian lattices