21 citations · 44 across the 6 of their papers we have counts for
6 papers
Quantum phase transition without gap opening
X. M. Yang, G. Zhang, Z. Song
Quantum phase transitions (QPTs), including symmetry breaking and topological types, always associated with gap closing and opening. We analyze the topological features of the quan…
Quantum phase transition induced by real-space topology
C. Li, G. Zhang, S. Lin +1
A quantum phase transition (QPT), including both topological and symmetry breaking types, is usually induced by the change of global parameters, such as external fields or global c…
Majorana charges, winding numbers and Chern numbers in quantum Ising models
G. Zhang, C. Li, Z. Song
Mapping a many-body state on a loop in parameter space is a simple way to characterize a quantum state. The connections of such a geometrical representation to the concepts of Cher…
Magnetic-flux-driven topological quantum phase transition and manipulation of perfect edge states in graphene tube
S. Lin, G. Zhang, C. Li +1
We study the tight-binding model for a graphene tube with perimeter N threaded by a magnetic field. We show exactly that this model has different nontrivial topological phases as t…
Amplitude modulated Bloch oscillations of photon probability distribution in a cavity-atom system
Gang Zhang, Wenhui Hu, Zhi Song
We study the dynamics of the Rabi Hamiltonian in the medium coupling regime with , where is atom-field coupling constant, is the field…
Gaussian enveloped decoherence of the atomic states in quantum cavity
G. Zhang, Z. Song
We revisit the decoherence of the atomic state in the resonant Jaynes-Cummings model with the field initially being in a coherent state. We show that the purity of the atom exhibit…