Anomalous charge pumping in a one-dimensional optical superlattice

Abstract

We model atomic motion in a sliding superlattice potential to explore topological "charge pumping" and to find optimal parameters for experimental observation of this phenomenon. We analytically study the band-structure, finding how the Wannier states evolve as two sinusoidal lattices are moved relative to one-another, and relate this evolution to the center of mass motion of an atomic cloud. We pay particular attention to counterintuitive or anomalous regimes, such as when the atomic motion is opposite to that of the lattice.

arXiv comment6 pages, 4 figures, comments are welcome

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Cited by in corpus (20)

• A Thouless Quantum Pump with Ultracold Bosonic Atoms in an Optical Superlattice
• Topological Thouless Pumping of Ultracold Fermions
• Thouless pumping and topology
• Synthetic spin-orbit coupling in an optical lattice clock
• Geometrical pumping with a Bose-Einstein condensate
• Multi-particle Wannier states and Thouless pumping of interacting bosons
• Simulating and exploring Weyl semimetal physics with cold atoms in a two-dimensional optical lattice
• Fibonacci optical lattices for tunable quantum quasicrystals
• Fractional charge pumping of interacting bosons in one-dimensional superlattice
• Topological charge pumping by sliding moiré pattern
• Topologically quantized current in quasiperiodic Thouless pumps
• Various Topological Mott insulators in strongly-interacting boson system in one-dimensional superlattice
• Adiabatic Control of Atomic Dressed States for Transport and Sensing
• Effects of Dephasing on Quantum Adiabatic Pumping with Nonequilibrium Initial States
• Bosonic integer quantum Hall effect as topological pumping
• Topological protection can arise from thermal fluctuations and interactions
• Topological pumping induced by spatiotemporal modulation of interaction
• Two-Dimensional Thouless Pumping of Ultracold Fermions in Obliquely Introduced Optical Superlattice
• Topological optical Raman superlattices
• Generalized Aubry-Andre-Harper Models in Optical Superlattices