Topological charge pumping

Author: haok

August undefined, 2024

WebThe charge pumped by this Thouless pump is a topological quantum number and does not depend on a smooth change of parameters. Importantly, this charge pumping shares the same topological origin as the integer quantum Hall effect. In spite of the importance in a topological quantum physics, this Thouless pump has never been realized in any system. Webtopological 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-

ULTRACOLD ATOMS A topological charge pump - Rutgers …

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... WebConstruction will be underway in January 2024 for both the pump station and force main. After site work and erosion control are completed at the pump station site, excavation for … sleep apps matthew mcconaughey

Exploring 4D Quantum Hall Physics with a 2D Topological Charge Pump …

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. 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 … WebOct 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... sleep around crossword

A Thouless quantum pump with ultracold bosonic atoms in an …

Topological Thouless pumping of ultracold fermions Nature Physics

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... 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 ... sleep area display boardWebJun 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 … sleep apps waves and music free

"WebApr 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. " - Topological charge pumping

Topological charge pumping

A topological charge pump Nature Physics

WebFeb 15, 2024 · Abstract. Recent experiments demonstrated deeply subwavelength lattices using atoms with N internal states Raman coupled with lasers of wavelength λ. The … WebJun 16, 2024 · The adiabatic topological pumping is proposed by periodically modulating a semiconductor nanowire double-quantum-dot chain. We demonstrate that the quantized …

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WebCharge pumping (CP) is a very sensitive characterization method of interface traps. The gate is repeatedly pulsed from inversion (where the minority carriers are trapped on the interface states) to accumulation (where the trapped carriers recombine with majority carriers). The carrier recombination results in CP current in the body terminal ... 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.

WebFeb 15, 2024 · Topological charge pumping with subwavelength Raman lattices Published February 15, 2024 Author(s) Ian Spielman, Gediminas Juzeliunas, Domantas Burba, mantas Raciunas Abstract Recent experiments demonstrated deeply subwavelength lattices using atoms with $N$ internal states Raman-coupled with lasers of wavelength $\lambda$. WebApr 29, 2024 · It is important to clarify whether the observed suppression of the charge pumping is the manifestation of a topological phase transition or not. A fundamental property useful to identify...

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 … WebBuy 2024 Mazda MX-30 EV Power Steering Pump. 3.0 LITER. Tribute; 3.0L. Power Steering Pump - Repair LITER, LINKAGE, HOSES - OEM Mazda Part # EC0732650R0D. Toggle …

WebNov 1, 2024 · The adiabatic topological pumping is proposed by periodically modulating a semiconductor nanowire double-quantum-dot chain. We demonstrate that the quantized …

WebPHYSICAL REVIEW A107, 023309 (2024) Topological charge pumping with subwavelength Raman lattices D. Burba , 1M. Raciˇ unas¯ , I. B. Spielman ,2 ,3 * and G. Juzeliunas¯ 1,† 1Institute of Theoretical Physics and Astronomy, Vilnius University, Saul˙etekio 3, LT-10257 Vilnius, Lithuania 2Joint Quantum Institute, University of Maryland, College Park, Maryland … sleep aromatherapy recipeWebJan 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 … sleep around the clockWebJan 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 ... sleep app that tracks snoringWebOct 18, 2024 · Quasiperiodic systems are a class of materials with long-range order but no translational symmetry. While they are an interesting platform for novel topological … sleep around 意味WebMore parameters: charge pumping Thouless pumps and winding invariant Quantum Hall effect: pumping electrons in Landau levels Quantum Hall effect: edge states ... This mapping has nontrivial topological properties … sleep around synonymWebApr 25, 2024 · Laughlin argued that changing the axial magnetic flux would result in a current along the axial direction such that charges would be pumped along the cylinder’s … sleep around the corner sleep around eyes