Dissipative two-dimensional Raman lattice

Abstract

We show that a dissipative two-dimensional Raman lattice can be engineered in a two-component ultracold atomic gas, where the interplay of the two-dimensional spin-orbit coupling and lightinduced atom loss gives rise to a density flow diagonal to the underlying square lattice. The flow is driven by the non-Hermitian corner skin effect, under which eigenstates localize toward one corner of the system. We illustrate that the topological edge states of the system can only be accounted for by the non-Bloch band theory where the deformation of the bulk eigenstates are explicitly considered. The directional flow can be detected through the dynamic evolution of an initially localized condensate in the lattice, or by introducing an immobile impurity species that interact spin-selectively with a condensate in the ground state of the Raman lattice.

arXiv comment7 pages, 5 figures

References in corpus (48)

• Topological Insulators
• Real Spectra in Non-Hermitian Hamiltonians Having PT Symmetry
• Edge states and topological invariants of non-Hermitian systems
• Non-Hermitian Physics
• Topological phases of non-Hermitian systems
• Weyl semimetal phase in non-centrosymmetric transition metal monophosphides
• Symmetry and Topology in Non-Hermitian Physics
• Quantum States and Phases in Driven Open Quantum Systems with Cold Atoms
• Topological Origin of Non-Hermitian Skin Effects
• Non-Bloch Band Theory of Non-Hermitian Systems
• Correspondence between winding numbers and skin modes in non-hermitian systems
• Non-Hermitian Chern bands
• Observation of non-Hermitian bulk-boundary correspondence in quantum dynamics
• Efficient Light Funneling based on the non-Hermitian Skin Effect
• Anatomy of skin modes and topology in non-Hermitian systems
• Edge Modes, Degeneracies, and Topological Numbers in Non-Hermitian Systems
• Realization of Two-Dimensional Spin-orbit Coupling for Bose-Einstein Condensates
• Probing topological invariants in the bulk of a non-Hermitian optical system
• Observation of parity-time symmetry breaking transitions in a dissipative Floquet system of ultracold atoms
• Non-Hermitian bulk-boundary correspondence and auxiliary generalized Brillouin zone theory
• Observation of Non-Hermitian Skin Effect and Topology in Ultracold Atoms
• Observation of hybrid higher-order skin-topological effect in non-Hermitian topolectrical circuits
• Probing non-Hermitian Skin Effect and non-Bloch Phase Transitions
• Observation of higher-order non-Hermitian skin effect
• Realization of 2D Spin-orbit Interaction and Exotic Topological Orders in Cold Atoms
• Simulation methods for open quantum many-body systems
• Quantum simulation of open-system dynamical maps with trapped ions
• Probing a dissipative phase transition via dynamical optical hysteresis
• Tunable non-reciprocal quantum transport through a dissipative Aharonov-Bohm ring in ultracold atoms
• Detecting topological invariants in nonunitary discrete-time quantum walks
• Phase-dependent chiral transport and effective non-Hermitian dynamics in a bosonic Kitaev-Majorana chain
• Realization of ideal Weyl semimetal band in ultracold quantum gas with 3D Spin-Orbit coupling
• Non-Bloch topological invariants in a non-Hermitian domain-wall system
• Signatures of a dissipative phase transition in photon correlation measurements
• Observation of non-Hermitian topological Anderson insulator in quantum dynamics
• Observation of the photon-blockade breakdown phase transition
• Manipulating Topological Edge Spins in One-Dimensional Optical Lattice
• Observation of symmetry-protected topological band with ultracold fermions
• Simulating non-Hermitian quasicrystals with single-photon quantum walks
• Unraveling the Non-Hermitian Skin Effect in Dissipative Systems
• Observing topological charges and dynamical bulk-surface correspondence with ultracold atoms
• Unified theory to characterize Floquet topological phases by quench dynamics
• Engineering Non-Hermitian Skin Effect with Band Topology in Ultracold Gases
• Non-Bloch quench dynamics
• Criticality and Phase Classification for Quadratic Open Quantum Many-Body Systems
• Dissipation-facilitated molecules in a Fermi gas with non-Hermitian spin-orbit coupling
• Phase diagram of quantum generalized Potts-Hopfield neural networks
• Synthetic topology and Floquet dynamic quantum phase transition in a periodically driven Raman lattice

Cited by in corpus (4)

• Two-dimensional non-Hermitian skin effect in an ultracold Fermi gas
• Kinked linear response from non-Hermitian cold-atom pumping
• Synthetic spin-orbit coupling for the multispin models in optical lattices
• Preparation and observation of anomalous counterpropagating edge states in a periodically driven optical Raman lattice