Topological charge pumping

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August undefined, 2024

WebFeb 15, 2024 · Abstract. Recent experiments demonstrated deeply subwavelength lattices using atoms with N internal states Raman coupled with lasers of wavelength λ. The … WebNov 1, 2024 · The adiabatic topological pumping is proposed by periodically modulating a semiconductor nanowire double-quantum-dot chain. We demonstrate that the quantized …

[2010.15249] Effect of disorder on topological charge pumping in …

WebRealization of such a topological charge pump serves as a firm step towards exploring topological states and non-equilibrium dynamics using cold atoms. Introduction Charge … WebOct 26, 2024 · Another important effect that has been demonstrated in TIs is spin pumping, [16, 17] i.e., the injection of a pure spin (and not charge) current from a ferromagnetic layer undergoing ferromagnetic resonance into an adjacent layer. Spin pumping in TIs, [19, 20] which forms the basis of TI-based spin-valve structures, was reported earlier. meat church spg

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WebJun 16, 2024 · The topological charge pumping is demonstrated by simulating the Rice-Mele model on a periodic double-quantum-dot chain, and manifested by the gapless edge states in a finite chain with open ... WebOct 28, 2024 · Recent experiments with ultracold quantum gases have successfully realized integer-quantized topological charge pumping in optical lattices. Motivated by this progress, we study the effects of static disorder on topological Thouless charge pumping. WebA topological charge pump Two experiments with ultracold fermionic and bosonic atoms in optical superlattices demonstrate the quantized charge transport predicted by Thouless in the 1980s . Roberta Citro! J1 a b J2 dS dL " (2!) x (dL) 0.5 0.25 0! 1 0 1 Classical Quantum Figure !1 Illustration of the superlattice and pumping scheme . a, A ... peerless play pdf

Topological charge and spin pumping in a semiconductor nanowire

Topological Charge Pumping in a One-Dimensional Optical …

WebDec 1, 2024 · Quantum pumping is a dynamic transport mechanism that dc charge currents can flow in the absence of any applied bias voltage via a quantum system, in which some parameters are periodically modulated in time. WebJan 18, 2016 · Charge transport in a cyclically time-modulated periodic potential, also known as a topological Thouless pump, has been realized in an ultracold gas of fermionic atoms. … meat church spatchcock chickenWebtopological charge pumping by calculating its Chern number and ab initio simulation of the pumping process. Compared with the corresponding classical dynamics, we show that quantum effects are crucial for the topological protection of the quantized charge pumping. We then con-sider the effect of a harmonic trap and predict the topo- peerless plastics mn

"WebJan 18, 2016 · In the quantum pump, the pumped charge is connected to the two-dimensional topological invariant, the Chern number ν, which was first introduced in the context of the integer quantum Hall effect ... " - Topological charge pumping

Topological charge pumping

Charge Pumping - an overview ScienceDirect Topics

WebJan 30, 2013 · 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. WebJan 28, 2024 · @article{osti_1803826, title = {Topological charge pumping in twisted bilayer graphene}, author = {Zhang, Yinhan and Gao, Yang and Xiao, Di}, abstractNote = {In this work, we show that a sliding motion between the two layers of a moiré superlattice induces an electric current and realizes a two-dimensional version of the topological Thouless pump …

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WebPHYSICAL REVIEW B102, 245123 (2024) Nonlinear optical control of chiral charge pumping in a topological Weyl semimetal M. Mehdi Jadidi,1 ,* Mehdi Kargarian ,2 ,† Martin Mittendorff,3 4 Yigit Aytac,3 5 Bing Shen,6 Jacob C. König-Otto,7 Stephan Winnerl,7 Ni Ni,6 Alexander L. Gaeta,1 Thomas E. Murphy ,3 and H. Dennis Drew8,‡ 1Department of Applied …

WebRice-Mele Model: Thouless Charge Pump. [1]: %matplotlib notebook. [2]: import numpy as np from scipy import sparse from scipy.sparse import bsr, csr_matrix from scipy.sparse.bsr import bsr_matrix from typing import List import scipy.linalg as … WebMar 7, 2024 · We establish a connection between the collective dynamics of the pillars and that of electrons in a magnetic field by deriving an accurate tight-binding model and developing a WKB-type analysis...

WebJan 3, 2024 · As an important class of topological systems, topological pumping has garnered great interest both theoretically and experimentally, since it connects the underlying topological features of... WebJan 18, 2016 · Topological charge pumping enables the transport of charge through an adiabatic cyclic evolution of the underlying Hamiltonian. In contrast to classical transport, …

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WebDec 7, 2024 · Electron pumping through energy-gapped systems is restricted for vanishing local density of states at the Fermi level. In this paper, we propose a topological … meat church spicesWebBuy 2024 Mazda MX-5 Miata 2.0L SKYACTIV M/T Club Convertible Engine Water Pump. Water Pump - Repair or - OEM Mazda Part # JF0315010RME. Toggle Navigation. … meat church smoked wings recipeWebOct 19, 2024 · Thouless charge pumping protocols provide a route for one-dimensional systems to realize topological transport. Here, using arrays of evanescently coupled optical waveguides, we... peerless playerWebApr 20, 2016 · An extended research has confirmed the equivalence between topological properties and quantized charge pumping of a continuous Rice–Mele pump. In this section, we study the pumping effect of two sinusoidal SAWs with different spatial period but the same temporal frequency. The two SAWs have the same acoustic velocity. meat church smoked turkey videosWebJun 16, 2024 · The adiabatic topological pumping is proposed by periodically modulating a semiconductor nanowire double-quantum-dot chain. We demonstrate that the quantized … meat church smoked whole chickenWebTopological charge pumping enables the transport of charge through an adiabatic cyclic evolution of the underlying Hamiltonian. In contrast to classical transport, the transported charge is quantized and purely determined by the topology of the pump cycle, making it robust to perturbations. peerless plumbing companyWebJun 16, 2024 · The adiabatic topological pumping is proposed by periodically modulating a semiconductor nanowire double-quantum-dot chain. We demonstrate that the quantized charge transport can be achieved by a nontrivial modulation of the quantum-dot well and barrier potentials. When the quantum-dot well potential is replaced by a time-dependent … meat church spice rubs