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Photonic simulation of topological excitations in metamaterials
Wei Tan, Yong Sun, Hong Chen +1
Condensed matter systems with topological order and metamaterials with left-handed chirality have attracted recently extensive interests in the fields of physics and optics. So far…
Finite size scaling of entanglement entropy at the Anderson transition with interactions
Rui-Lin Chu, An Zhao, Shun-Qing Shen
We study the entanglement entropy(EE) of disordered one-dimensional spinless fermions with attractive interactions. With intensive numerical calculation of the EE using the density…
Quantum impurity in the bulk of topological insulator
Hai-Feng Lu, Hai-Zhou Lu, Shun-Qing Shen +1
We investigate physical properties of an Anderson impurity embedded in the bulk of a topological insulator. The slave-boson mean-field approximation is used to account for the stro…
Intervalley Scattering and Localization Behaviors of Spin-Valley Coupled Dirac Fermions
Hai-Zhou Lu, Wang Yao, Di Xiao +1
We study the quantum diffusive transport of multivalley massive Dirac cones, where time-reversal symmetry requires opposite spin orientations in inequivalent valleys. We show that…
Nonlocal noise cross-correlation mediated by entangled Majorana fermions
Hai-Feng Lu, Hai-Zhou Lu, Shun-Qing Shen
Due to their nonlocality, qubits nested in Majorana bound states may be the key to realize decoherence-free quantum computation. Majorana bound states could be achieved at the ends…
A magnetic monopole in topological insulator: exact solution
Yuan-Yuan Zhao, Shun-Qing Shen
The Witten effect tells that a unit magnetic monopole can bind a half elementary charge in an axion media. We present an exact solution of a magnetic monopole in a topological insu…