Topological charge pumping in a one-dimensional optical lattice

Abstract

A topological charge pump [1] transfers charge in a quantized fashion. The quantization is stable against the detailed form of the pumping protocols and external noises and shares the same topological origin as the quantum Hall effect. We propose an experiment setup to realize topological charge pumping of cold atoms in a one-dimensional optical lattice. The quantization of the pumped charge is confirmed by first-principle simulations of the dynamics of uniform and trapped systems. Quantum effects are shown to be crucial for the topological protection of the charge quantization. Finite-temperature and non-adiabatic effect on the experimental observables are discussed. Realization of such a topological charge pump servers as a firm step towards exploring topological states and non-equilibrium dynamics using cold atoms.

added references and new supplemental material

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Cited by in corpus (128)

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• Landau-Zener Transition in Topological Acoustic Pumping
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• Observation of Non-Abelian Thouless Pump
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• Emergent pseudospin-1 Maxwell fermions with a threefold degeneracy in optical lattices
• Topological phases, edge modes, and the Hofstadter butterfly in coupled Su-Schrieffer-Heeger systems
• Simulating and exploring Weyl semimetal physics with cold atoms in a two-dimensional optical lattice
• Universality in driven open quantum matter
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• Topological Phase Transition Independent of System Non-Hermiticity
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• Universal competitive spectral scaling from the critical non-Hermitian skin effect
• Fractional charge pumping of interacting bosons in one-dimensional superlattice
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• Topologically quantized current in quasiperiodic Thouless pumps
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• Quantum Transport of Rydberg Excitons with Synthetic Spin-Exchange Interactions
• Topological features of ground states and topological solitons in generalized Su-Schrieffer-Heeger models using generalized time-reversal, particle-hole, and chiral symmetries
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