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Topological charge pumping

WebJul 12, 2024 · We study the quantized charge pumping of higher-order topological insulators (HOTIs) with edge-corner correspondences based on the combination of the rotation of in-plane magnetic field and... 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 …

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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 … 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 … as vutuka https://zambezihunters.com

Topological Charge Pumping with Cold Atoms - NASA/ADS

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... WebJan 12, 2024 · Here, we show that in excitonic insulators with s-wave electron-hole pairing, an applied electric field (either pulsed or static) can induce a p-wave component to the order parameter, and further drive it to rotate in the s + ip plane, realizing a Thouless charge pump. WebJun 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 … aswb pennsylvania

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Topological charge pumping

Topological charge pumping with subwavelength Raman …

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. … 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 …

Topological charge pumping

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WebOct 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 … WebJun 16, 2024 · The adiabatic topological pumping is proposed by periodically modulating a semiconductor nanowire double-quantum-dot chain. We demonstrate that the quantized …

WebTopological 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. 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 …

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 … 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.

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...

WebApr 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 … la soleilletteWebCharge 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 ... la solihaWebFeb 15, 2024 · Abstract. Recent experiments demonstrated deeply subwavelength lattices using atoms with N internal states Raman coupled with lasers of wavelength λ. The … aswini hospital ottapalamWebJan 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 ... lasmax noiseWebOct 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. aswo neuvilleWebJan 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... la solaiaWebThese solutions, known as instantons or multi-instantons, realize a mapping of the three-dimensional sphere at infinity on the gauge group, and the topological charge is the … a sweet jess stallion