6 citations · 9 across the 7 of their papers we have counts for
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Hierarchic superradiant phases in anisotropic Dicke model
D. K. He, Z. Song
We revisit the phase diagram of an anisotropic Dicke model by revealing the non-analyticity induced by underlying exceptional points. We find that, from a dynamical perspective, th…
Higher order coherence as witness of exceptional point in Hermitian bosonic Kitaev dimer
D. K. He, Z. Song
The non-analyticity induced by exceptional points (EPs) has manifestations not only in non-Hermitian but also in Hermitian systems. In this work, we focus on a minimal Hermitian bo…
Detecting the Chern number via quench dynamics in two independent chains
D. K. He, Y. B. Shi, Z. Song
The Chern number, as a topological invariant, characterizes the topological features of a 2D system and can be experimentally detected through Hall conductivity. In this work, we i…
Hidden exceptional point, localization-delocalization phase transition in Hermitian bosonic Kitaev model
D. K. He, Z. Song
Exceptional points (EPs), a unique feature of non-Hermitian systems, represent degeneracies in non-Hermitian operators that likely do not occur in Hermitian systems. Nevertheless,…