Results 41 to 50 of about 197,846 (331)

Topological graph states and quantum error-correction codes [PDF]

open access: yesPhysical Review A, 2021
Deciding if a given family of quantum states is topologically ordered is an important but nontrivial problem in condensed matter physics and quantum information theory. We derive necessary and sufficient conditions for a family of graph states to be in TQO-
Pengcheng Liao, B. Sanders, D. Feder
semanticscholar   +1 more source

Experimental classification of quenched quantum walks by dynamical Chern number

open access: yesPhysical Review Research, 2019
Topology has rapidly become one of the central topics in modern physics because of its ability to explain various interesting phenomena, especially in condensed matter physics.
Xiao-Ye Xu   +11 more
doaj   +1 more source

Quantum topology in the ultrastrong coupling regime

open access: yesScientific Reports, 2022
The coupling between two or more objects can generally be categorized as strong or weak. In cavity quantum electrodynamics for example, when the coupling strength is larger than the loss rate the coupling is termed strong, and otherwise it is dubbed weak.
C. A. Downing, A. J. Toghill
doaj   +1 more source

Exploring Relationship Between Traditional Lattices and Graph Lattices of Topological Coding

open access: yesJisuanji kexue yu tansuo, 2021
It is known that there are no polynomial quantum algorithms to solve some lattice difficult problems. Uncolored graphic lattice and colored graphic lattice are the products of multidisciplinary intersection inspired by lattice theory. A uncolored graphic
ZHANG Mingjun, YANG Sihua, YAO Bing
doaj   +1 more source

Topological Quantum Phase Transition and Local Topological Order in a Strongly Interacting Light-Matter System

open access: yesScientific Reports, 2017
An attempt is made to understand the topological quantum phase transition, emergence of relativistic modes and local topological order of light in a strongly interacting light-matter system.
Sujit Sarkar
doaj   +1 more source

Z2 topological order and the quantum spin Hall effect. [PDF]

open access: yesPhysical Review Letters, 2005
The quantum spin Hall (QSH) phase is a time reversal invariant electronic state with a bulk electronic band gap that supports the transport of charge and spin in gapless edge states.
C. Kane, E. Mele
semanticscholar   +1 more source

Charges and Electromagnetic Radiation as Topological Excitations

open access: yesAdvances in High Energy Physics, 2017
We discuss a model with stable topological solitons in Minkowski space with only three degrees of freedom, the rotational angles of a spatial Dreibein. This model has four types of solitons differing in two topological quantum numbers which we identify ...
Manfried Faber
doaj   +1 more source

Towards a quantum theory of solitons

open access: yesNuclear Physics B, 2015
We formulate a quantum coherent state picture for topological and non-topological solitons. We recognize that the topological charge arises from the infinite occupation number of zero momentum quanta flowing in one direction.
Gia Dvali   +3 more
doaj   +1 more source

Fate of fractional quantum Hall states in open quantum systems: Characterization of correlated topological states for the full Liouvillian

open access: yesPhysical Review Research, 2020
Despite previous extensive analysis of open quantum systems described by the Lindblad equation, it is unclear whether correlated topological states, such as fractional quantum Hall states, are maintained even in the presence of the jump term.
Tsuneya Yoshida   +3 more
doaj   +1 more source

Antiferromagnetic topological crystalline insulator and mixed Weyl semimetal in two-dimensional NpAs monolayer

open access: yesNew Journal of Physics, 2021
Magnetic topological states have attracted significant attentions due to their intriguing quantum phenomena and potential applications in topological spintronic devices.
Xiaorong Zou   +6 more
doaj   +1 more source

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