671 citations · 4.3k across the 34 of their papers we have counts for
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physics.optics2015★ 162 cited
Coalescence of spectral singularities and phase diagrams for one-dimensional PT symmetric photonic crystals
Kun Ding, Z. Q. Zhang, C. T. Chan
Non-Hermitian systems with parity-time (PT) symmetric complex potentials can exhibit a phase transition when the degree of non-Hermiticity is increased. Two eigenstates coalesce at…
cond-mat.mes-hall2015★ 377 cited
The emergence, coalescence and topological properties of multiple exceptional points and their experimental realization
Kun Ding, Guancong Ma, Meng Xiao +2
Non-Hermitian systems distinguish themselves from Hermitian systems by exhibiting a phase transition point called an exceptional point (EP), which is the point at which two eigenst…
physics.optics2015★ 126 cited
Klein tunneling and supercollimation of pseudospin-1 electromagnetic waves
A. Fang, Z. Q. Zhang, Steven G. Louie +1
Pseudospin plays a central role in many novel physical properties of graphene and other artificial systems which have pseudospins of 1/2. Here we show that in certain photonic crys…