Results 41 to 50 of about 176,214 (315)

Butterflies and topological quantum numbers

, 2001
9 pages, 5 ...
Avron, J. E., Osadchy, D.
openaire   +2 more sources

Spin Hurwitz numbers and topological quantum field theory [PDF]

Geometry & Topology, 2016
38 pages, substantially rewritten and reorganized following referees' advice. Diagrams added.
openaire   +5 more sources

Observing Topological Invariants Using Quantum Walks in Superconducting Circuits

Physical Review X, 2017
The direct measurement of topological invariants in both engineered and naturally occurring quantum materials is a key step in classifying quantum phases of matter.
E. Flurin, V. V. Ramasesh, S. Hacohen-Gourgy, L. S. Martin, N. Y. Yao, I. Siddiqi   +5 more
doaj   +1 more source

Determination of topological edge quantum numbers of fractional quantum Hall phases

, 2022
To determine the topological quantum numbers of fractional quantum Hall (FQH) states hosting counter-propagating (CP) downstream ($N_d$) and upstream ($N_u$) edge modes, it is pivotal to study quantized transport both in the presence and absence of edge mode equilibration.
Srivastav, Saurabh Kumar, Kumar, Ravi, Spånslätt, Christian, Watanabe, K., Taniguchi, T., Mirlin, Alexander D., Gefen, Yuval, Das, Anindya   +7 more
openaire   +2 more sources

3D quantum Hall effect in a topological nodal-ring semimetal

Quantum Frontiers, 2023
A quantized Hall conductance (not conductivity) in three dimensions has been searched for more than 30 years. Here we explore it in 3D topological nodal-ring semimetals, by employing a minimal model describing the essential physics.
Guang-Qi Zhao, Shuai Li, W. B. Rui, C. M. Wang, Hai-Zhou Lu, X. C. Xie   +5 more
doaj   +1 more source

Topological Quantum Numbers of Dyonic Fields Over Taub-NUT and Taub-Bolt Spaces [PDF]

Journal of Geometry and Symmetry in Physics, 2017
Final published ...
Flores-Alfonso, Daniel, Quevedo, Hernando   +1 more
openaire   +4 more sources

Entanglement Chern number for three-dimensional topological insulators: Characterization by Weyl points of entanglement Hamiltonians [PDF]

, 2017
We propose characterization of the three-dimensional topological insulator by using the Chern number for the entanglement Hamiltonian (entanglement Chern number).
Araki Hiromu, Fukui Takahiro, Hatsugai Yasuhiro, 初貝 安弘   +3 more
core   +2 more sources

Measurement of topological invariants in a 2D photonic system

, 2016
A hallmark feature of topological physics is the presence of one-way propagating chiral modes at the system boundary. The chirality of edge modes is a consequence of the topological character of the bulk.
Fan, Jingyun, Ganeshan, Sriram, Hafezi, Mohammad, Mittal, Sunil, Vaezi, Abolhassan   +4 more
core   +1 more source

Hardness of Braided Quantum Circuit Optimization in the Surface Code

IEEE Transactions on Quantum Engineering, 2023
Large-scale quantum information processing requires the use of quantum error-correcting codes to mitigate the effects of noise in quantum devices.
Kunihiro Wasa, Shin Nishio, Koki Suetsugu, Michael Hanks, Ashley Stephens, Yu Yokoi, Kae Nemoto   +6 more
doaj   +1 more source

The Loschmidt Index

SciPost Physics, 2021
We study the nodes of the wavefunction overlap between ground states of a parameter-dependent Hamiltonian. These nodes are topological, and we can use them to analyze in a unifying way both equilibrium and dynamical quantum phase transitions in multi ...
Diego Liska, Vladimir Gritsev
doaj   +1 more source