213 citations · 819 across the 28 of their papers we have counts for
5 papers · 1 filter
Higher winding number in a non-unitary photonic quantum walk
Lei Xiao, Xingze Qiu, Kunkun Wang +6
Topological matter exhibits exotic properties yet phases characterized by large topological invariants are difficult to implement, despite rapid experimental progress. A promising…
Observation of emergent momentum-time skyrmions in parity-time-symmetric non-unitary quench dynamics
Kunkun Wang, Xingze Qiu, Lei Xiao +5
Topology in quench dynamics gives rise to intriguing dynamic topological phenomena, which are intimately connected to the topology of static Hamiltonians yet challenging to probe e…
Simulating dynamic quantum phase transitions in photonic quantum walks
Kunkun Wang, Xingze Qiu, Lei Xiao +4
Signaled by non-analyticities in the time evolution of physical observables, dynamic quantum phase transitions (DQPTs) emerge in quench dynamics of topological systems and possess…
Fixed points and emergent topological phenomena in a parity-time-symmetric quantum quench
Xingze Qiu, Tian-Shu Deng, Ying Hu +2
We identify emergent topological phenomena such as dynamic Chern numbers and dynamic quantum phase transitions in quantum quenches of the non-Hermitian Su-Schrieffer-Heeger Hamilto…
Dynamical topological invariants and reduced rate functions for dynamical quantum phase transitions in two dimensions
Xingze Qiu, Tian-Shu Deng, Guang-Can Guo +1
We show that dynamical quantum phase transitions (DQPTs) in the quench dynamics of two-dimensional topological systems can be characterized by a dynamical topological invariant def…