Quantized Topological Anderson-Thouless Pump
- URL: http://arxiv.org/abs/2208.08625v1
- Date: Thu, 18 Aug 2022 03:58:05 GMT
- Title: Quantized Topological Anderson-Thouless Pump
- Authors: Yi-Piao Wu, Ling-Zhi Tang, Guo-Qing Zhang, Dan-Wei Zhang
- Abstract summary: Thouless pump with quantized transports is topologically robust against small perturbations and disorders.
We propose counter-intuitive topological pumps induced by disorders in noninteracting and interacting systems.
Our proposed TATPs present new members of the topological pump family and could be realized with ultracold atoms or photonic waveguides.
- Score: 1.8057851545459673
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Thouless pump with quantized transports is topologically robust against small
perturbations and disorders, while breaks down under sufficiently strong
disorders. Here we propose counter-intuitive topological pumps induced by
disorders in noninteracting and interacting systems. We first show an extrinsic
topological pump driven by the on-site quasiperiodic potential for a two-loop
sequence, where the disorder inequivalently suppresses the topology of two pump
loops. Moreover, we reveal an intrinsic topological pump induced by the hopping
quasiperiodic disorder from a trivial single-loop pump in the clean limit,
dubbed the topological Anderson-Thouless pump (TATP) as a dynamical analogue of
topological Anderson insulators. We demonstrate that the mechanism of the TATP
is the disorder-induced shift of gapless critical points and the TATP can even
exhibit in the dynamic disorder and interacting cases. Finally, we extend the
TATP to higher-order topological systems with disorder-induced quantized corner
transports. Our proposed TATPs present new members of the topological pump
family and could be realized with ultracold atoms or photonic waveguides.
Related papers
- Quantized Thouless pumps protected by interactions in dimerized Rydberg tweezer arrays [41.94295877935867]
In the noninteracting case, quantized Thouless pumps can only occur when a topological singularity is encircled adiabatically.
In the presence of interactions, such topological transport can even persist for exotic paths in which the system gets arbitrarily close to the noninteracting singularity.
arXiv Detail & Related papers (2024-02-14T16:58:21Z) - Topological pumping induced by spatiotemporal modulation of interaction [1.7518340290808412]
We propose to use modulation of interaction to realize topological pumping without single-particle counterpart.
Because the modulation breaks time-reversal symmetry, the multiparticle energy bands of bound states have none-zero Chern number.
Our work could trigger further studies of correlated topological phenomena that do not have a single-particle counterpart.
arXiv Detail & Related papers (2024-01-07T16:33:56Z) - Disorder-induced topological pumping on a superconducting quantum
processor [22.437412238586404]
Thouless pumping represents the quantized charge pumped during an adiabatic cyclic evolution.
With a 41-qubit superconducting quantum processor, we develop a Floquet engineering technique to realize cycles of adiabatic pumping.
We observe Thouless pumping in the presence of disorder and show its breakdown as the strength of disorder increases.
arXiv Detail & Related papers (2024-01-03T03:57:54Z) - Stabilization of Hubbard-Thouless pumps through nonlocal fermionic
repulsion [0.0]
Thouless pumping represents a powerful concept to probe quantized topological invariants in quantum systems.
We show that sufficiently large intersite interactions allow for an interaction-induced recovery of Thouless pumps.
Our results provide a new mechanism to stabilize Thouless pumps in interacting quantum systems.
arXiv Detail & Related papers (2023-08-25T13:34:42Z) - Higher-order topological Peierls insulator in a two-dimensional
atom-cavity system [58.720142291102135]
We show how photon-mediated interactions give rise to a plaquette-ordered bond pattern in the atomic ground state.
The pattern opens a non-trivial topological gap in 2D, resulting in a higher-order topological phase hosting corner states.
Our work shows how atomic quantum simulators can be harnessed to investigate novel strongly-correlated topological phenomena.
arXiv Detail & Related papers (2023-05-05T10:25:14Z) - Self-oscillating pump in a topological dissipative atom-cavity system [55.41644538483948]
We report on an emergent mechanism for pumping in a quantum gas coupled to an optical resonator.
Due to dissipation, the cavity field evolves between its two quadratures, each corresponding to a different centrosymmetric crystal configuration.
This self-oscillation results in a time-periodic potential analogous to that describing the transport of electrons in topological tight-binding models.
arXiv Detail & Related papers (2021-12-21T19:57:30Z) - Bloch-Landau-Zener dynamics induced by a synthetic field in a photonic
quantum walk [52.77024349608834]
We realize a photonic quantum walk in the presence of a synthetic gauge field.
We investigate intriguing system dynamics characterized by the interplay between Bloch oscillations and Landau-Zener transitions.
arXiv Detail & Related papers (2020-11-11T16:35:41Z) - Quasiperiodic Floquet-Thouless energy pump [0.0]
We show that quantization of energy pumping persists for finite ramping frequencies.
We show that a related phase can be realized with a cavity-qubit system driven by two incommensurate modes.
arXiv Detail & Related papers (2020-10-22T07:11:24Z) - Memory-Critical Dynamical Buildup of Phonon-Dressed Majorana Fermions [72.46695228124449]
We study a one-dimensional polaronic topological superconductor with phonon-dressed $p$-wave pairing.
We show that when the memory depth increases, the Majorana edge dynamics transits from relaxing monotonically to a plateau of substantial value into a collapse-and-buildup behavior.
arXiv Detail & Related papers (2020-06-24T07:32:51Z) - Dynamical solitons and boson fractionalization in cold-atom topological
insulators [110.83289076967895]
We study the $mathbbZ$ Bose-Hubbard model at incommensurate densities.
We show how defects in the $mathbbZ$ field can appear in the ground state, connecting different sectors.
Using a pumping argument, we show that it survives also for finite interactions.
arXiv Detail & Related papers (2020-03-24T17:31:34Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.