Results 31 to 40 of about 197,846 (331)

Quantum Phase Diagram and Spontaneously Emergent Topological Chiral Superconductivity in Doped Triangular-Lattice Mott Insulators. [PDF]

open access: yesPhysical Review Letters, 2022
The topological superconducting state is a highly sought-after quantum state hosting topological order and Majorana excitations. In this Letter, we explore the mechanism to realize the topological superconductivity (TSC) in the doped Mott insulators with
Yixuan Huang, S. Gong, D. Sheng
semanticscholar   +1 more source

TOPOLOGICAL QUANTUM NUMBERS AND CURVATURE — EXAMPLES AND APPLICATIONS [PDF]

open access: yesInternational Journal of Geometric Methods in Modern Physics, 2009
Using the idea of the degree of a smooth mapping between two manifolds of the same dimension we present here the topological (homotopical) classification of the mappings between spheres of the same dimension, vector fields, monopole and instanton solutions.
Szczesny, Jerzy   +2 more
openaire   +2 more sources

Topological squashed entanglement: Nonlocal order parameter for one-dimensional topological superconductors

open access: yesPhysical Review Research, 2022
Identifying entanglement-based order parameters characterizing topological systems, in particular topological superconductors and topological insulators, has remained a major challenge for the physics of quantum matter in the last two decades.
Alfonso Maiellaro   +2 more
doaj   +1 more source

Breakdown of conventional winding number calculation in one-dimensional lattices with interactions beyond nearest neighbors

open access: yesCommunications Physics, 2023
Topological insulators hold promises to realize exotic quantum phenomena in electronic, photonic, and phononic systems. Conventionally, topological indices, such as winding numbers, have been used to predict the number of topologically protected domain ...
Amir Rajabpoor Alisepahi   +3 more
doaj   +1 more source

Quantum Spin-Hall Effect and Topologically Invariant Chern Numbers [PDF]

open access: yesPhysical Review Letters, 2006
We present a topological description of quantum spin Hall effect (QSHE) in a two-dimensional electron system on honeycomb lattice with both intrinsic and Rashba spin-orbit couplings. We show that the topology of the band insulator can be characterized by a $2\times 2$ traceless matrix of first Chern integers.
Sheng, D. N.   +3 more
openaire   +3 more sources

Topological interpretation of quantum numbers [PDF]

open access: yesJournal of Experimental and Theoretical Physics, 1999
It is shown how one can define vector topological charges for topological exitations of non-linear sigma-models on compact homogeneous spaces T_G and G/T_G (where G is a simple compact Lie group and T_G is its maximal commutative subgroup). Explicit solutions for some cases, their energies and interaction of different topological charges are found.
openaire   +2 more sources

Topological Quantum Batteries. [PDF]

open access: yesPhysical Review Letters
We propose an innovative design for quantum batteries (QBs) that involves coupling two-level systems to a topological photonic waveguide. Employing the resolvent method, we analytically explore the thermodynamic performance of QBs.
Zhi-Guang Lu   +3 more
semanticscholar   +1 more source

Topological Effects of a Spiral Dislocation on Quantum Revivals

open access: yesUniverse, 2022
We analyse the influence of spiral dislocation topology on the revival time for the harmonic oscillator, for a particle confined to one-dimensional quantum ring, and a two-dimensional quantum ring. We first investigate the effects of a cut-off point that
Anderson Maia, K. Bakke
semanticscholar   +1 more source

Cooper-pair transistor as a minimal topological quantum circuit [PDF]

open access: yesPhysical Review Research, 2020
The outlook of protected quantum computing spurred enormous progress in the search for topological materials, sustaining a continued race to find the most experimentally feasible platform.
T. Herrig, R. Riwar
semanticscholar   +1 more source

Two-dimensional $\mathbb{Z}_2$ lattice gauge theory on a near-term quantum simulator: variational quantum optimization, confinement, and topological order [PDF]

open access: yes, 2021
We propose an implementation of a two-dimensional $\mathbb{Z}_2$ lattice gauge theory model on a shallow quantum circuit, involving a number of single and two-qubits gates comparable to what can be achieved with present-day and near-future technologies ...
Luca Lumia   +6 more
semanticscholar   +1 more source

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