17 citations · 32 across the 5 of their papers we have counts for
5 papers
Quantum Zeno effect in the multimode quantum Rabi model
Shu He, Chen Wang, Xue-Zao Ren +2
We study the quantum Zeno effect (QZE) and quantum anti-Zeno effect (QAZE) of the multimode quantum Rabi model(MQRM). We derive an analytic expression for the decay rate of the sur…
Quantum phase transitions of the spin-boson model within multi-coherent-states
Liwei Duan, Shu He, Qing-Hu Chen
A variational approach based on the multi-coherent-state ansatz with asymmetric parameters is employed to study the ground state of the spin-boson model. Without any artificial app…
Absence of collapse in quantum Rabi oscillations
Shu He, Yang Zhao, Qing-Hu Chen
We show analytically that the collapse and revival in the population dynamics of the atom-cavity coupled system under the rotating wave approximation (RWA), valid only at very weak…
Quantum criticality of the sub-Ohmic spin-boson model within displaced Fock states
Shu He, Liwei Duan, Qing-Hu Chen
The spin-boson model is analytically studied using displaced Fock states (DFS) without discretization of the continuum bath. In the orthogonal displaced Fock basis, the ground-stat…
Exact solvability, non-integrability, and genuine multipartite entanglement dynamics of the Dicke model
Shu He, Liwei Duan, Qing-Hu Chen
In this paper, the finite size Dicke model of arbitrary number of qubits is solved analytically in an unified way within extended coherent states. For the or Dicke mo…