265 citations · 2.1k across the 75 of their papers we have counts for
10 papers · 1 filter
Comment on `Parameter-dependent unitary transformation approach for quantum Rabi model'
Daniel Braak, Murray T. Batchelor, Qing-Hu Chen
We discuss the elementary errors in D.G. Zhang's [New. J. Phys. 23, 093014 (2021)] claimed exact solution of the quantum Rabi model. The erroneous solution is seen to be nothing mo…
Quantum phase transition in the one-dimensional Dicke-Hubbard model with coupled qubits
Shu He, Li-Wei Duan, Yan-Zhi Wang +2
We study the ground state phase diagram of a one-dimensional two qubits Dicke-Hubbard model with XY qubit-qubit interaction. We use a numerical method combing the cluster mean-fiel…
Possibility of superradiant phase transitions in coupled two-level atoms
Tao Liu, Yu-Yu Zhang, Qing-Hu Chen +1
Although the oscillator strength sum rule forbids the phase transition in ideal non-interacting two-level atoms systems, we present the possibility of the quantum phase transition…
General symmetry operators of the asymmetric quantum Rabi model
You-Fei Xie, Qing-Hu Chen
The true level crossing in the asymmetric quantum Rabi model without any obvious symmetry can be exhibited in the energy spectrum if the qubit bias is a multiple of the cavity freq…
Quantum phase transition of light in the dissipative Rabi-Hubbard lattice: A dressed-master-equation perspective
Tian Ye, Chen Wang, Qing-Hu Chen
In this work, we investigate the quantum phase transition of light in the dissipative Rabi-Hubbard lattice under the framework of the mean-field theory and quantum dressed master e…
Symmetry operators of the asymmetric two-photon quantum Rabi model
You-Fei Xie, Qing-Hu Chen
The true level crossings in a subspace of the asymmetric two-photon quantum Rabi model (tpQRM) have been observed when the bias parameter of qubit is an even multiple of the renorm…